MAX249EQH+D [MAXIM]
Line Driver/Receiver, 6 Driver, CMOS, PQCC44,;
| 型号： | MAX249EQH+D |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Line Driver/Receiver, 6 Driver, CMOS, PQCC44, 驱动 驱动器 |
| 文件： | 总39页 (文件大小：421K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
General Description
Benefits and Features
Saves Board Space
The MAX220–MAX249 family of line drivers/receivers is
intended for all EIA/TIA-232E and V.28/V.24 communica-
tions interfaces, particularly applications where 12V is
not available.
• Integrated Charge Pump Circuitry
• Eliminates the Need for a Bipolar 12V Supply
• Enables Single Supply Operation from +5V Supply
The MAX225, MAX233, MAX235, and MAX245/MAX246/
MAX247 use no external components and are
recommended for applications where printed circuit
board space is critical.
• Integrated Capacitors (MAX223, MAX233, MAX235,
MAX245-MAX247)
Saves Power for Reduced Power Requirements
• 5µW Shutdown Mode
The MAX220-MAX249 are offered in 26 different pack-
ages with temperatures from 0 to +70°C up to -55°C to
+125°C. See ordering information table at the end of the
data sheet for all package and temperature options.
Ordering Information and Selection Table appears at end
of data sheet.
Applications
• Interface Translation
• Multidrop RS-232 Networks
• Portable Diagnostics Equipment
AutoShutdown and UCSP are trademarks of Maxim Integrated
Products, Inc.
MAX220/MAX232/MAX232A Pin Configuration and Typical Operating Circuit
+5V INPUT
C3
TOP VIEW
C5
16
+
V
1
CC
2
C1+
V+
V
1
2
3
4
5
6
7
8
CC
16
15
14
13
12
11
10
9
C1+
C1-
+10V
V+
V-
+5V TO +10V
VOLTAGE DOUBLER
C1
C2
3
4
GND
6
-10V
C4
C2+
C2-
+10V TO -10V
VOLTAGE INVERTER
C1-
T1OUT
R1IN
5
C2+
C2-
MAX220
MAX232
MAX232A
+5V
R1OUT
T1IN
400kΩ
T1IN
T1OUT
11
14
V-
+5V
TTL/CMOS
INPUTS
RS-232
T2OUT
T2IN
400kΩ
T2IN
OUTPUTS
T2OUT
R1IN
7
R2OUT
R2IN
10
12
DIP/SO
R1OUT
R2OUT
13
TTL/CMOS
OUTPUTS
RS-232
INPUTS
5kΩ
CAPACITANCE (μF)
C1 C2 C3 C4 C5
MAX220 0.047 0.33 0.33 0.33 0.33
MAX232 1.0 1.0 1.0 1.0 1.0
MAX232A 0.1 0.1 0.1 0.1 0.1
DEVICE
8
9
R2IN
5kΩ
GND
15
19-4323; Rev 17; 1/15
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
Absolute Maximum Ratings—MAX220/222/232A/233A/242/243
(Voltages referenced to GNDꢂ)
ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ-1ꢂ.V to +6V
±6-Pin Narrow SO (derate 8ꢂ41mW/°C above +41°C) ꢂꢂꢂ696mW
V
±6-Pin Wide SO (derate 9ꢂ5XmW/°C above +41°C)ꢂꢂꢂꢂꢂꢂ46XmW
±8-Pin Wide SO (derate 9ꢂ5XmW/°C above +41°C)ꢂꢂꢂꢂꢂꢂ46XmW
X1-Pin Wide SO (derate ±1ꢂ11mW/°C above +41°C)ꢂꢂꢂꢂ811mW
X1-Pin SSOP (derate 8ꢂ11mW/°C above +41°C) ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ6ꢁ1mW
±6-Pin CERDIP (derate ±1ꢂ11mW/°C above +41°C)ꢂꢂꢂꢂꢂ811mW
±8-Pin CERDIP (derate ±1ꢂ5.mW/°C above +41°C)ꢂꢂꢂꢂꢂ8ꢁXmW
Operating ꢅemperature Ranges
CC
V+ (Note ±)ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ(V
- 1ꢂ.V) to +±ꢁV
CC
V- (Note ±) ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ+1ꢂ.V to -±ꢁV
Input Voltages
ꢅINꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ-1ꢂ.V to (V
- 1ꢂ.V)
CC
RIN (Except ꢄMAXX1)ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ±.1V
RIN (ꢄMAXX1) ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ±X5V
ꢅOUꢅ (Except ꢄMAXX1) (Note X) ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ±±5V
ꢅOUꢅ (ꢄMAXX1)ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ±±.ꢂXV
Output Voltages
ꢄMAX_ _MC_ _% ꢄMAX_ _C_ _ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ1°C to +41°C
ꢄMAX_ _ME_ _% ꢄMAX_ _E_ _ ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ-ꢁ1°C to +85°C
ꢄMAX_ _Mꢄ_ _% ꢄMAX_ _ꢄ_ _ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ-55°C to +±X5°C
Storage ꢅemperature Rangeꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ-65°C to +±61°C
Lead ꢅemperature (soldering% ±1s) ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ+.11°C
Soldering ꢅemperature (reflow)
X1 PDIP (PX1ꢄ+±) ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ+XX5°C
Mll other lead(Pb)-free packagesꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ+X61°C
Mll other packages containing lead(Pb) ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ+Xꢁ1°C
ꢅOUꢅꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ±±5V
ROUꢅꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ-1ꢂ.V to (V
+ 1ꢂ.V)
CC
Driver/Receiver Output Short Circuited to GNDꢂꢂꢂꢂꢂꢂꢂꢂꢂContinuous
Continuous Power Dissipation (ꢅ = +41°C)
M
±6-Pin Plastic DIP (derate ±1ꢂ5.mW/°C above +41°C)ꢂꢂ8ꢁXmW
±8-Pin Plastic DIP (derate ±±ꢂ±±mW/°C above +41°C)ꢂꢂ889mW
X1-Pin Plastic DIP (derate 8ꢂ11mW/°C above +41°C) ꢂꢂꢁꢁ1mW
Note 1: µor the ꢄMAXX1% V+ and V- can have a maximum magnitude of 4V% but their absolute difference cannot exceed ±.Vꢂ
Note 2: Input voltage measured with ꢅOUꢅ in high-impedance state% V or V = 1Vꢂ
SHDN
CC
Stresses beyond those listed under “Mbsolute ꢄaximum Ratings” may cause permanent damage to the deviceꢂ ꢅhese are stress ratings only% and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not impliedꢂ Exposure to
absolute maximum rating conditions for extended periods may affect device reliabilityꢂ
Electrical Characteristics—MAX220/222/232A/233A/242/243
F unless otherwise notedꢂ) (Note .)
ꢄMA
(V
= +5V ±±10% C±ꢀCꢁ = 1ꢂ±ꢃµF ꢄMAXX1% C± = 1ꢂ1ꢁ4ꢃµ% CXꢀCꢁ = 1ꢂ..ꢃµ% ꢅ = ꢅ
to ꢅ
CC
M
ꢄIN
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
RS-232 TRANSMITTERS
Output Voltage Swing
All transmitter outputs loaded with 3kꢀ to GND
±±
±ꢀ
1.4
1.4
V
V
Input Logic-Low Voltage
0.ꢀ
All devices except MAX220
2
Input Logic-High Voltage
Logic Pullup/lnput Current
V
MAX220: V = +±.0V
CC
2.4
All except MAX220, normal operation
±
40
μA
V
= 0V, MAX222/MAX242, shutdown,
SHDN
±0.01
±1
MAX220
V
= +±.±V, V
= 0V, V
= ±1±V,
OUT
CC
SHDN
±0.01
±0.01
±10
MAX222/MAX242
Output Leakage Current
μA
V
= ±1±V
±10
±2±
116
OUT
V
CC
= V
= 0V
SHDN
MAX220, V
= ±12V
OUT
Data Rate
200
10M
±22
kbps
Transmitter Output Resistance
V
V
= V+ = V- = 0V, V
= ±2V
OUT
300
±ꢁ
ꢀ
CC
V
= 0V
OUT
Output Short-Circuit Current
RS-232 RECEIVERS
= 0V
mA
OUT
MAX220
±60
±30
±2±
RS-232 Input Voltage Operating Range
V
V
V
MAX220
All except MAX243 R2IN
MAX243 R2IN (Note 4)
All except MAX243 R2IN
MAX243 R2IN (Note 4)
0.ꢀ
-3
1.3
RS-232 Input Threshold Low
RS-232 Input Threshold High
V
V
= +±V
= +±V
CC
1.ꢀ
2.4
CC
-0.±
-0.1
www.maximintegrated.com
Maxim Integrated | 2
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
Electrical Characteristics—MAX220/222/232A/233A/242/243 (continued)
F unless otherwise notedꢂ) (Note .)
ꢄMA
(V
= +5V ±±10% C±ꢀCꢁ = 1ꢂ±ꢃµF ꢄMAXX1% C± = 1ꢂ1ꢁ4ꢃµ% CXꢀCꢁ = 1ꢂ..ꢃµ% ꢅ = ꢅ
to ꢅ
CC
M
ꢄIN
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
All except MAX220/MAX243, V = +±V, no
CC
hysteresis in shutdown
0.2
0.±
1.0
RS-232 Input Hysteresis
RS-232 Input Resistance
V
MAX220
0.3
1
MAX243
3
3
±
ꢁ
T
A
= +2±°C (MAX220)
kꢁ
±
ꢁ
I
I
I
= 3.2mA
0.2
0.4
0.4
OUT
OUT
OUT
TTL/CMOS Output Voltage Low
TTL/CMOS Output Voltage High
TTL/CMOS Output Short-Circuit Current
V
V
= 1.6mA (MAX220)
= -1.0mA
3.±
-2
V
CC
- 0.2
Sourcing V
= V
-10
OUT
GND
mA
Sinking V
= V
10
30
OUT
CC
V
= V or V = V (V
= 0V for
SHDN
CC
EN
CC SHDN
TTL/CMOS Output Leakage Current
±0.0±
±10
0.ꢀ
μA
MAX222), 0V ꢀ V
ꢀ V
CC
OUT
EN Input Threshold Low
EN Input Threshold High
Supply Voltage Range
MAX242
1.4
1.4
V
V
V
MAX242
2.0
4.±
±.±
2
MAX220
0.±
4
No load
MAX222/MAX232A/MAX233A/
MAX242/MAX243
10
V
CC
Supply Current (V
= V ),
SHDN CC
mA
μA
Figures ±, 6, 11, 19
MAX220
12
1±
3kꢁ load
both inputs
MAX222/MAX232A/MAX233A/
MAX242/MAX243
T
A
T
A
T
A
T
A
= +2±°C
0.1
2
10
±0
= 0°C to +ꢁ0°C
= -40°C to +ꢀ±°C
= -±±°C to +12±°C
MAX222/
MAX242
Shutdown Supply Current
2
±0
3±
100
±1
0.ꢀ
SHDN Input Leakage Current
SHDN Threshold Low
MAX222/MAX242
MAX222/MAX242
MAX222/MAX242
μA
V
1.4
1.4
SHDN Threshold High
2.0
6
V
C = ±0pF to 2±00pF,
R
L
MAX222/MAX232A/
MAX233/MAX242/MAX243
12
3
30
= 3kꢁ to ꢁkꢁ,
= +±V, T =
A
L
V
CC
Transition Slew Rate
V/μs
+2±°C, measured
from +3V to -3V or
-3V to +3V
MAX220
1.±
30.0
MAX222/MAX232A/
MAX233/MAX242/MAX243
1.3
4
3.±
10
t
t
, Figure 1
, Figure 1
PHLT
PLHT
MAX220
Transmitter Propagation Delay TLL to
RS-232 (Normal Operation)
μs
MAX222/MAX232A/
MAX233/MAX242/MAX243
1.±
±
3.±
10
MAX220
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Maxim Integrated | 3
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
Electrical Characteristics—MAX220/222/232A/233A/242/243 (continued)
F unless otherwise notedꢂ) (Note .)
ꢄMA
(V
= +5V ±±10% C±ꢀCꢁ = 1ꢂ±ꢃµF ꢄMAXX1% C± = 1ꢂ1ꢁ4ꢃµ% CXꢀCꢁ = 1ꢂ..ꢃµ% ꢅ = ꢅ
to ꢅ
CC
M
ꢄIN
PARAMETER
CONDITIONS
MIN
TYP
0.±
0.6
0.6
MAX
UNITS
MAX222/MAX232A/MAX233/
MAX242/MAX243
1
3
1
t
t
, Figure 2
, Figure 2
PHLR
PLHR
MAX220
Receiver Propagation Delay RS-232 to
TLL (Normal Operation)
μs
MAX222/MAX232A/MAX233/
MAX242/MAX243
MAX220
0.ꢀ
0.±
2.±
12±
160
3
t
t
t
t
, Figure 2
, Figure 2
MAX242
10
Receiver Propagation Delay RS-232 to
TLL (Shutdown)
PHLS
PHLS
ER
μs
MAX242
10
Receiver-Output Enable Time
Receiver-Output Disable Time
MAX242, Figure 3
MAX242, Figure 3
±00
±00
ns
ns
DR
MAX222/MAX242, 0.1μF
caps (includes charge-pump
start-up), Figure 4
Transmitter-Output Enable Time
(SHDN Goes High)
t
2±0
600
μs
ns
ET
DT
Transmitter-Output Disable Time
(SHDN Goes Low)
MAX222/MAX242,
0.1μF caps, Figure 4
t
MAX222/MAX232A/MAX233/
MAX242/MAX243
300
2000
100
Transmitter + to - Propagation Delay
Difference (Normal Operation)
t
t
- t
ns
ns
PHLT PLHT
MAX220
MAX222/MAX232A/MAX233/
MAX242/MAX243
Receiver + to - Propagation Delay
Difference (Normal Operation)
- t
PHLR PLHR
MAX220
22±
Note 3: Mll units are production tested at hotꢂ Specifications over temperature are guaranteed by designꢂ
Note 4: ꢄMAXꢁ. RXOUꢅ is guaranteed to be low when RXIN ≥ 1V or is unconnectedꢂ
Typical Operating Characteristics
MAX220/MAX222/MAX232A/MAX233A/MAX242/MAX243
AVAILABLE OUTPUT CURRENT
MAX222/MAX242
vs. DATA RATE
ON-TIME EXITING SHUTDOWN
OUTPUT VOLTAGE vs. LOAD CURRENT
10
8
11
10
+10V
1μF
V+
OUTPUT LOAD CURRENT
FLOWS FROM V+ TO V-
1μF CAPS
EITHER V+ OR V- LOADED
V+
6
0.1μF CAPS
+5V
+5V
ALL CAPS
0.1μF
V
= +5V
CC
9
8
7
6
5
4
4
1μF
NO LOAD ON
TRANSMITTER OUTPUTS
(EXCEPT MAX220, MAX233A)
SHDN
V
= +5.25V
= +4.75V
0V
0V
2
0
CC
ALL CAPS
0.1μF
V- LOADED, NO LOAD ON V+
-2
-4
-6
-8
-10
V
CC
1μF CAPS
0.1μF
1μF
0.1μF CAPS
V-
V-
V+ LOADED, NO LOAD ON V-
10 15 20 25
LOAD CURRENT (mA)
-10V
0
5
0
10
20
30
40
50
60
500μs/div
DATA RATE (kb/s)
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Maxim Integrated | 4
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
Absolute Maximum Ratings—MAX223/MAX230–MAX241
(Voltages referenced to GNDꢂ)
ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ-1ꢂ.V to +6V
X8-Pin Wide SO (derate ±Xꢂ51mW/°C above +41°C) ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ±W
V
CC
ꢁꢁ-Pin Plastic µP (derate ±±ꢂ±±mW/°C above +41°C) ꢂꢂꢂꢂꢂ889mW
±ꢁ-Pin CERDIP (derate 9ꢂ19mW/°C above +41°C)ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ4X4mW
±6-Pin CERDIP (derate ±1ꢂ11mW/°C above +41°C)ꢂꢂꢂꢂꢂꢂꢂꢂ811mW
X1-Pin CERDIP (derate ±±ꢂ±±mW/°C above +41°C)ꢂꢂꢂꢂꢂꢂꢂꢂ889mW
Xꢁ-Pin Narrow CERDIP
V+ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ(V
- 1ꢂ.V) to +±ꢁV
CC
V- ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ+1ꢂ.V to -±ꢁV
Input Voltages
ꢅINꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ-1ꢂ.V to (V
+ 1ꢂ.V)
CC
RINꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ±.1V
Output Voltages
ꢅOUꢅ ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ(V+ + 1ꢂ.V) to (V- - 1ꢂ.V)
(derate ±Xꢂ51mW/°C above +41°C) ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ±W
Xꢁ-Pin Sidebraze (derate X1ꢂ1mW/°C above +41°C)ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ±ꢂ6W
X8-Pin SSOP (derate 9ꢂ5XmW/°C above +41°C)ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ46XmW
Operating ꢅemperature Ranges
ROUꢅꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ-1ꢂ.V to (V
+ 1ꢂ.V)
CC
Short-Circuit Duration% ꢅOUꢅ to GND ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂContinuous
ꢄMAX _ _ C _ _ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ1°C to +41°C
ꢄMAX _ _ E _ _ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ-ꢁ1°C to +85°C
ꢄMAX _ _ ꢄ _ _ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ-55°C to +±X5°C
Storage ꢅemperature Rangeꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ-65°C to +±61°C
Lead ꢅemperature (soldering% ±1s) ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ+.11°C
Soldering ꢅemperature (reflow)
Continuous Power Dissipation (ꢅ = +41°C)
M
±ꢁ-Pin Plastic DIP (derate ±1ꢂ11mW/°C above +41°C)ꢂꢂꢂꢂ811mW
±6-Pin Plastic DIP (derate ±1ꢂ5.mW/°C above +41°C)ꢂꢂꢂꢂ8ꢁXmW
X1-Pin Plastic DIP (derate ±±ꢂ±±mW/°C above +41°C)ꢂꢂꢂꢂ889mW
Xꢁ-Pin Narrow Plastic DIP
(derate ±.ꢂ..mW/°C above +41°C) ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ±ꢂ14W
X1 PDIP (PX1ꢄ+±) ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ+XX5°C
Xꢁ PDIP (PXꢁꢄ-±) ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ+XX5°C
Mll other lead(Pb)-free packagesꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ+X61°C
Mll other packages containing lead(Pb)ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ+Xꢁ1°C
Xꢁ-Pin Plastic DIP (derate 9ꢂ19mW/°C above +41°C)ꢂꢂꢂꢂꢂꢂ511mW
±6-Pin Wide SO (derate 9ꢂ5XmW/°C above +41°C)ꢂꢂꢂꢂꢂꢂꢂꢂꢂ46XmW
X1-Pin Wide SO (derate ±1ꢂ11mW/°C above +41°C)ꢂꢂꢂꢂꢂꢂꢂ811mW
Xꢁ-Pin Wide SO (derate ±±ꢂ46mW/°C above +41°C)ꢂꢂꢂꢂꢂꢂꢂ9ꢁ±mW
Stresses beyond those listed under “Mbsolute ꢄaximum Ratings” may cause permanent damage to the deviceꢂ ꢅhese are stress ratings only% and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not impliedꢂ Exposure to
absolute maximum rating conditions for extended periods may affect device reliabilityꢂ
Electrical Characteristics—MAX223/MAX230–MAX241
(ꢄMAXX./X.1/X.X/X.ꢁ/X.6/X.4/X.8/Xꢁ1/Xꢁ±% V
= +5V ± ±10ꢆ ꢄMAX../ꢄMAX.5% V
= +5V ± 50F C±ꢀCꢁ = ±ꢂ1ꢃµꢆ
CC
CC
ꢄMAX.±/ꢄMAX.9% V
= +5V ±±10ꢆ V+ = +4ꢂ5V to +±.ꢂXVꢆ ꢅ = ꢅ
to ꢅ
ꢆ unless otherwise notedꢂ) (Note 5)
ꢄMA
CC
M
ꢄIN
PARAMETER
CONDITIONS
MIN
TYP
±4ꢂ.
5
MAX
UNITS
Output Voltage Swing
Mll transmitter outputs loaded with .kΩ to ground
±5ꢂ1
V
ꢄMAX.X/X..
±1
±5
±
No load%
V
CC
Supply Current
ꢄMAXX./X.1/X.ꢁꢀX.8/Xꢁ1/Xꢁ±
4
mM
mM
ꢅ
M
= +X5°C
ꢄMAX.±/X.9
ꢄMAX.±
1ꢂꢁ
±ꢂ8
5
5
V+ Supply Current
ꢄMAX.9
±5
51
±1
1ꢂ8
ꢄMAXX.
±5
±
Shutdown Supply Current
Input Logic-Low Voltage
ꢅ
M
= +X5°C
ꢃM
V
ꢄMAX.1/X.5/X.6/Xꢁ1/Xꢁ±
ꢅIN% EN% SHDN (ꢄMAX..)ꢆ EN% SHDN (ꢄMAX.1/X.5ꢀXꢁ±)
ꢅIN
Xꢂ1
Xꢂꢁ
Input Logic-High Voltage
V
EN% SHDN (ꢄMAXX.)ꢆ
EN% SHDN (ꢄMAX.1/X.5/X.6/Xꢁ1/Xꢁ±)
Logic Pullup Current
V
ꢅIN
= 1V
±ꢂ5
X11
+.1
ꢃM
V
Receiver Input Voltage
Operating Range
-.1
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Maxim Integrated | 5
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
Electrical Characteristics—MAX223/MAX230–MAX241 (continued)
(ꢄMAXX./X.1/X.X/X.ꢁ/X.6/X.4/X.8/Xꢁ1/Xꢁ±% V
= +5V ± ±10ꢆ ꢄMAX../ꢄMAX.5% V
= +5V ± 50F C±ꢀCꢁ = ±ꢂ1ꢃµꢆ
CC
CC
ꢄMAX.±/ꢄMAX.9% V
= +5V ±±10ꢆ V+ = +4ꢂ5V to +±.ꢂXVꢆ ꢅ = ꢅ
to ꢅ
ꢆ unless otherwise notedꢂ) (Note 5)
ꢄMA
CC
M
ꢄIN
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
Normal operation
V
V
= +5V (ꢄMAXX.)
= 1V (ꢄMAX.5/X.6/Xꢁ1/Xꢁ±)
1ꢂ8
±ꢂX
SHDN
SHDN
ꢅ
V
= +X5°C%
M
RS-X.X Input Logic-Low Voltage
V
= +5V
CC
Shutdown (ꢄMAXX.)
V
V
= 1V%
= +5V (RꢁIN% R5IN)
1ꢂ6
±ꢂ5
±ꢂ4
±ꢂ5
SHDN
EN
Normal operation
V
V
= 5V (ꢄMAXX.)
= 1V (ꢄMAX.5/X.6/Xꢁ1/Xꢁ±)
Xꢂꢁ
SHDN
SHDN
ꢅ
V
= +X5°C%
M
RS-X.X Input Logic-High Voltage
V
= +5V
CC
Shutdown (ꢄMAXX.)
V
V
= 1V%
= +5V (RꢁINF R5IN)
Xꢂꢁ
SHDN
EN
RS-X.X Input Hysteresis
V
= +5V% no hysteresis in shutdown
= +5V
1ꢂX
.
1ꢂ5
5
±ꢂ1
4
V
kΩ
V
CC
RS-X.X Input Resistance
ꢅ
M
= +X5°C% V
CC
ꢅꢅL/CꢄOS Output Voltage Low
ꢅꢅL/CꢄOS Output Voltage High
I
I
= ±ꢂ6mM (ꢄMAX.±/X.X/X..% I = .ꢂXmM)
OUꢅ
1ꢂꢁ
OUꢅ
OUꢅ
= -±mM
.ꢂ5
V
- 1ꢂꢁ
V
CC
1V ≤ R
EN
≤ V ꢆ V = 1V (ꢄMAXX.)ꢆ
CC EN
OUꢅ
ꢅꢅL/CꢄOS Output Leakage Current
Receiver Output Enable ꢅime
±1ꢂ15
±±1
ꢃM
ns
V
= V
(ꢄMAX.5ꢀXꢁ±)
CC
ꢄMAXX.
611
ꢁ11
911
X51
1ꢂ5
ꢁ
Normal
operation
ꢄMAX.5/X.6/X.9/Xꢁ1/Xꢁ±
ꢄMAXX.
Normal
operation
Receiver Output Disable ꢅime
Propagation Delay
ns
ꢃs
ꢄMAX.5/X.6/X.9/Xꢁ1/Xꢁ±
Normal operation
±1
ꢁ1
ꢁ1
RS-X.X IN to
ꢅꢅL/CꢄOS OUꢅ%
C = ±51pµ
L
t
PHLS
PLHS
V
= 1V
SHDN
(ꢄMAXX.)
t
6
ꢄMAXX./ꢄMAX.1/ꢄMAX.ꢁꢀXꢁ±% ꢅ = +X5°C% V = +5V%
M
CC
R = .kΩ to 4kΩF C = 51pµ to X511pµ% measured from
.
5ꢂ±
ꢁ
.1
.1
L
L
+.V to -.V or -.V to +.V
ꢅransition Region Slew Rate
ꢅransmitter Output Resistance
V/ꢃs
ꢄMAX.±/ꢄMAX.X/ꢄMAX..% ꢅ = +X5°C% V
= +5V%
CC
M
R = .kΩ to 4kΩ% C = 51pµ to X511pµ% measured from
L
L
+.V to -.V or -.V to +.V
V
CC
= V+ = V- = 1V% V = ±XV
OUꢅ
.11
Ω
ꢅransmitter Output Short-Circuit
Current
±±1
mM
Note 5: Mll units are production tested at hot except for the ꢄMAXꢁ1% which is production tested at ꢅ = +X5°Cꢂ Specifications over
M
temperature are guaranteed by designꢂ
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Maxim Integrated | 6
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
Typical Operating Characteristics
MAX223/MAX230–MAX241
TRANSMITTER OUTPUT VOLTAGE (V
vs. LOAD CAPACITANCE AT
DIFFERENT DATA RATES
)
OH
TRANSMITTER SLEW RATE
vs. LOAD CAPACITANCE
TRANSMITTER OUTPUT
VOLTAGE (V ) vs. V
OH
CC
12.0
11.0
10.0
9.0
7.4
7.2
7.0
6.8
6.6
6.4
6.2
6.0
8.5
8.0
7.5
7.0
6.5
1 TRANSMITTER LOADED
T
V
= +25°C
CC
A
2 TRANSMITTERS
LOADED
= +5V
LOADED, R = 3kΩ
L
C1–C4 = 1μF
2 TRANSMITTERS
LOADED
1 TRANSMITTER
LOADED
160kb/s
80kb/s
20kb/s
8.0
3 TRANS-
MITTERS
LOADED
7.0
T
V
= +25°C
CC
A
T
A
= +25°C
3 TRANSMITTERS
LOADED
6.0
= +5V
C1–C4 = 1μF
TRANSMITTER
LOADS =
3 TRANSMITTERS LOADED
4 TRANSMITTERS
LOADED
5.0
4.0
R = 3kΩ
L
4 TRANSMITTERS
LOADED
C1–C4 = 1μF
3kΩ || 2500pF
0
500
1000
1500
2000
2500
0
500
1000
1500
2000
2500
4.5
5.0
5.5
LOAD CAPACITANCE (pF)
LOAD CAPACITANCE (pF)
V
(V)
CC
TRANSMITTER OUTPUT VOLTAGE (V
vs. LOAD CAPACITANCE AT
DIFFERENT DATA RATES
)
OL
TRANSMITTER OUTPUT
VOLTAGE (V ) vs. V
TRANSMITTER OUTPUT VOLTAGE (V+, V-)
vs. LOAD CURRENT
OL
CC
-6.0
-6.5
-6.0
-6.2
-6.4
-6.6
-6.8
-7.0
-7.2
-7.4
-7.6
10
8
4 TRANS-
MITTERS
LOADED
T
= +25°C
A
T
V
= +25°C
CC
A
C1–C4 = 1μF
TRANSMITTER
LOADS =
= +5V
6
3 TRANSMITTERS LOADED
T
V
= +25°C
CC
A
R = 3kΩ
L
= +5V
4
3kΩ || 2500pF
-7.0
-7.5
-8.0
-8.5
-9.0
C1–C4 = 1μF
C1–C4 = 1μF
2
V- LOADED,
NO LOAD
ON V+
V+ AND V-
EQUALLY
LOADED
V+ LOADED,
NO LOAD
ON V-
160kb/s
80kb/s
20kb/s
0
1 TRANS-
MITTER
-2
-4
-6
LOADED
3 TRANS-
MITTERS
LOADED
2 TRANS-
MITTERS
LOADED
-8
ALL TRANSMITTERS UNLOADED
-10
4.5
5.0
5.5
0
500
1000
1500
2000
2500
0
5
10 15 20 25 30 35 40 45 50
CURRENT (mA)
V
(V)
LOAD CAPACITANCE (pF)
CC
V+, V- WHEN EXITING SHUTDOWN
(1μF CAPACITORS)
MAX220-13
V+
O
V-
V
SHDN
*
500ms/div
*SHUTDOWN POLARITY IS REVERSED
FOR NON MAX241 PARTS
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Maxim Integrated | 7
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
Absolute Maximum Ratings—MAX225/MAX244–MAX249
(Voltages referenced to GNDꢂ)
Continuous Power Dissipation (ꢅ = +41°C)
M
X8-Pin Wide SO (derate ±Xꢂ51mW/°C above +41°C) ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ±W
CC
ꢁ1-Pin Plastic DIP (derate ±±ꢂ±±mW/°C above +41°C) ꢂꢂꢂ6±±mW
ꢁꢁ-Pin PLCC (derate ±.ꢂ..mW/°C above +41°C) ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ±ꢂ14W
Operating ꢅemperature Ranges
RINꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ±X5V
ꢅOUꢅ (Note 6)ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ±±5V
ꢄMAXX5C_ _% ꢄMAXꢁ_C_ _ ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ1°C to +41°C
ꢄMAXX5E_ _% ꢄMAXꢁ_E_ _ ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ-ꢁ1°C to +85°C
Storage ꢅemperature Rangeꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ-65°C to +±61°C
Lead ꢅemperature (soldering%±1s))ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ+.11°C
Soldering ꢅemperature (reflow)
ꢁ1 PDIP (Pꢁ1ꢄ-X) ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ+XX5°C
Mll other lead(Pb)-free packagesꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ+X61°C
Mll other packages containing lead(Pb) ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ+Xꢁ1°C
ROUꢅꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ-1ꢂ.V to (V
Short Circuit Duration (one output at a time)
+ 1ꢂ.V)
CC
ꢅOUꢅ to GNDꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂContinuous
ROUꢅ to GNDꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂContinuous
Note 6: Input voltage measured with transmitter output in a high-impedance state% shutdown% or V
= 1Vꢂ
CC
Stresses beyond those listed under “Mbsolute ꢄaximum Ratings” may cause permanent damage to the deviceꢂ ꢅhese are stress ratings only% and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not impliedꢂ Exposure to
absolute maximum rating conditions for extended periods may affect device reliabilityꢂ
Electrical Characteristics—MAX225/MAX244–MAX249
(ꢄMAXX5% V
= +5ꢂ1V ±50ꢆ ꢄMAXꢁꢁꢀꢄMAXꢁ9% V
= +5ꢂ1V ±±10% external capacitors C±ꢀCꢁ = ±ꢃµꢆ ꢅ = ꢅ
to ꢅ
ꢆ unless
ꢄMA
CC
CC
M
ꢄIN
otherwise notedꢂ) (Note 4)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
RS-232 TRANSMITTERS
Input Logic-Low Voltage
Input Logic-High Voltage
±ꢂꢁ
±ꢂꢁ
1ꢂ8
V
V
X
Normal operation
Shutdown
±1
51
±±
6ꢁ
Logic Pullup/lnput Current
ꢅables ±aꢀ±d
ꢃM
±1ꢂ1±
±X1
±4ꢂ5
Data Rate
ꢅables ±aꢀ±d% normal operation
kbps
V
Output Voltage Swing
Mll transmitter outputs loaded with .kΩ to GND
±5
V
% V
= V
% V
CC% OUꢅ
% V
= ±±5V
%
ENA ENB ENT ENTA
±1ꢂ1±
±1ꢂ1±
±X5
±X5
V
ENTB
V
Output Leakage Current (Shutdown)
ꢅables ±aꢀ±d
ꢃM
V
V
= 1V%
= ±±5V
CC
OUꢅ
ꢅransmitter Output Resistance
Output Short-Circuit Current
RS-232 RECEIVERS
V
V
= V+ = V- = 1V% V
= ±XV (Note 8)
.11
±4
±1ꢄ
±.1
Ω
mM
CC
OUꢅ
= 1V
OUꢅ
RS-X.X Input Voltage Operating Range
RS-X.X Input Logic-Low Voltage
RS-X.X Input Logic-High Voltage
RS-X.X Input Hysteresis
±X5
V
V
V
V
V
= +5V
= +5V
= +5V
1ꢂ8
±ꢂ.
±ꢂ8
1ꢂ5
5
CC
CC
CC
Xꢂꢁ
±ꢂ1
4
V
1ꢂX
.
V
RS-X.X Input Resistance
kΩ
V
ꢅꢅL/CꢄOS Output Voltage Low
ꢅꢅL/CꢄOS Output Voltage High
I
I
= .ꢂXmM
= -±ꢂ1mM
1ꢂX
1ꢂꢁ
OUꢅ
.ꢂ5
-X
V
- 1ꢂX
V
OUꢅ
CC
Sourcing V
= V
-±1
OUꢅ
GND
ꢅꢅL/CꢄOS Output Short-Circuit Current
ꢅꢅL/CꢄOS Output Leakage Current
mM
ꢃM
Sinking V
= V
±1
.1
OUꢅ
CC
Normal operation% outputs disabled%
ꢅables ±aꢀ±d% 1V ≤ V ≤ V % V
±1ꢂ15
±1ꢂ±1
= V
CC
OUꢅ
CC ENR_
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Maxim Integrated | 8
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
Electrical Characteristics—MAX225/MAX244–MAX249 (continued)
(ꢄMAXX5% V
= +5ꢂ1V ±50ꢆ ꢄMAXꢁꢁꢀꢄMAXꢁ9% V
= +5ꢂ1V ±±10% external capacitors C±ꢀCꢁ = ±ꢃµꢆ ꢅ = ꢅ
to ꢅ
ꢆ unless
ꢄMA
CC
CC
M
ꢄIN
otherwise notedꢂ) (Note 4)
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
POWER SUPPLY AND CONTROL LOGIC
ꢄMAXX5
ꢁꢂ45
ꢁꢂ5
5ꢂX5
V
Supply Voltage Range
ꢄMAXꢁꢁꢀꢄMAXꢁ9
ꢄMAXX5
5ꢂ5
±1
±±
ꢁ1
54
8
X1
No load
ꢄMAXꢁꢁꢀꢄMAXꢁ9
ꢄMAXX5
.1
V
CC
Supply Current
mM
(Normal Operation)
.kΩ loads on
all outputs
ꢄMAXꢁꢁꢀꢄMAXꢁ9
ꢅ
ꢅ
= +X5°C
X5
ꢃM
51
M
Shutdown Supply Current
Control Input
= ꢅ
to ꢅ
ꢄMA
M
ꢄIN
Leakage current
Logic-low voltage
±±
ꢃM
±ꢂꢁ
±ꢂꢁ
1ꢂ8
V
Logic-high voltage
Xꢂꢁ
5
AC CHARACTERISTICS
C = 51pµ to X511pµ% R = .kΩ to 4kΩ% V = +5V%
L
M
L
CC
ꢅransition Slew Rate
±1
.1
V/ꢃs
ꢃs
ꢅ = +X5°C% measured from +.V to -.V or -.V to +.V
t
t
t
t
t
t
% µigure ±
% µigure ±
% µigure X
% µigure X
% µigure X
% µigure X
±ꢂ.
±ꢂ5
1ꢂ6
1ꢂ6
1ꢂ6
.ꢂ1
.ꢂ5
.ꢂ5
±ꢂ5
±ꢂ5
±1
PHLꢅ
PLHꢅ
PHLR
PLHR
PHLS
PLHS
ꢅransmitter Propagation Delay
ꢅLL to RS-X.X (Normal Operation)
Receiver Propagation Delay
ꢅLL to RS-X.X (Normal Operation)
ꢃs
ꢃs
Receiver Propagation Delay
ꢅLL to RS-X.X (Low-Power ꢄode)
±1
ꢅransmitter + to - Propagation
Delay Difference (Normal Operation)
t
- t
.51
.51
ns
ns
PHLꢅ PLHꢅ
Receiver + to - Propagation
Delay Difference (Normal Operation)
t
- t
PHLR PLHR
Receiver-Output Enable ꢅime
Receiver-Output Disable ꢅime
t
t
% µigure .
±11
±11
511
511
ns
ns
ER
% µigure .
DR
ꢄMAXꢁ6ꢀꢄMAXꢁ9
(excludes charge-pump startup)
5
ꢃs
ꢅransmitter Enable ꢅime
ꢅransmitter Disable ꢅime
t
t
Eꢅ
ꢄMAXX5/ꢄMAXꢁ5ꢀꢄMAXꢁ9
(includes charge-pump startup)
±1
ms
ns
% µigure ꢁ
±11
Dꢅ
Note 7: Mll units production tested at hotꢂ Specifications over temperature are guaranteed by designꢂ
Note 8: ꢅhe .11Ω minimum specification complies with EIM/ꢅIM-X.XE% but the actual resistance when in shutdown mode or V
=
CC
1V is ±1ꢄΩ as is implied by the leakage specificationꢂ
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Maxim Integrated | 9
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
Typical Operating Characteristics
MAX225/MAX244–MAX249
TRANSMITTER OUTPUT VOLTAGE (V+, V-)
vs. LOAD CAPACITANCE AT
DIFFERENT DATA RATES
9.0
TRANSMITTER SLEW RATE
vs. LOAD CAPACITANCE
OUTPUT VOLTAGE
vs. LOAD CURRENT FOR V+ AND V-
18
16
14
12
10
8
10
8
V
CC
= +5V WITH ALL TRANSMITTERS DRIVEN
V
CC
= +5V
LOADED WITH 5kΩ
8.5
8.0
7.5
7.0
6.5
6.0
5.5
5.0
V+ AND V- LOADED
10kb/s
6
4
2
EITHER V+ OR
V- LOADED
20kb/s
EXTERNAL POWER SUPPLY
1μF CAPACITORS
V
CC
= +5V
EXTERNAL CHARGE PUMP
1μF CAPACITORS
8 TRANSMITTERS
DRIVING 5kΩ AND
2000pF AT 20kb/s
40kb/s
60kb/s
0
40kb/s DATA RATE
8 TRANSMITTERS
LOADED WITH 3kΩ
-2
V- LOADED
-4
-6
100kb/s
200kb/s
6
4
V+ AND V- LOADED
-8
ALL CAPACITIORS 1μF
V+ LOADED
30 35
2
-10
0
1
2
3
4
5
0
1
2
3
4
5
0
5
10
15
20
25
LOAD CAPACITANCE (nF)
LOAD CAPACITANCE (nF)
LOAD CURRENT (mA)
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Maxim Integrated | 10
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
Test Circuits/Timing Diagrams
+3V
0V*
50%
50%
50%
INPUT
+3V
INPUT
0V
V
CC
OUTPUT
50%
GND
V+
0V
V-
OUTPUT
t
t
t
PLHR
PHLR
PHLS
t
PLHS
t
t
PHLT
PLHT
*EXCEPT FOR R2 ON THE MAX243
WHERE -3V IS USED.
µigure ±ꢂ ꢅransmitter Propagation-Delay ꢅiming
µigure Xꢂ Receiver Propagation-Delay ꢅiming
EN
1kΩ
R OUT
X
R
X
V
- 2V
R IN
X
CC
+3V
SHDN
a) TEST CIRCUIT
0V
150pF
0V
OUTPUT DISABLE TIME (t
)
DT
+3V
EN INPUT
V+
+5V
EN
OUTPUT ENABLE TIME (t
)
ER
0V
-5V
+3.5V
V-
RECEIVER
OUTPUTS
+0.8V
a) TIMING DIAGRAM
b) ENABLE TIMING
+3V
EN
0V
T
X
1 OR 0
EN INPUT
OUTPUT DISABLE TIME (t
)
DR
50pF
3kΩ
V
OH
V
OH
- 0.5V
RECEIVER
OUTPUTS
V
- 2V
CC
V
OL
+ 0.5V
b) TEST CIRCUIT
V
OL
c) DISABLE TIMING
µigure .ꢂ Receiver-Output Enable and Disable ꢅiming
µigure ꢁꢂ ꢅransmitter-Output Disable ꢅiming
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Maxim Integrated | 11
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
Control Pin Configuration Tables
Table 1a. MAX245 Control Pin Configurations
OPERATION STATUS
Normal Operation
Normal Operation
Shutdown
TRANSMITTERS
RECEIVERS
ENT
ENR
1
1
±
±
1
±
1
±
Mll Mctive
Mll Mctive
Mll High-Z
Mll High-Z
Mll Mctive
Mll High-Z
Mll Low-Power Receive ꢄode
Mll High-Z
Shutdown
Table 1b. MAX245 Control Pin Configurations
TRANSMITTERS
RECEIVERS
OPERATION
STATUS
ENT
ENR
TA1–TA4
TB1–TB4
RA1–RA5
Mll Mctive
RB1–RB5
Mll Mctive
1
1
1
±
Normal Operation
Normal Operation
Mll Mctive
Mll Mctive
RM±ꢀRMꢁ High-Z%
RM5 Mctive
RB±ꢀRBꢁ High-Z%
RB5 Mctive
Mll Mctive
Mll Mctive
Mll High-Z
Mll Low-Power
Receive ꢄode
Mll Low-Power
Receive ꢄode
±
±
1
±
Shutdown
Shutdown
Mll High-Z
Mll High-Z
RM±ꢀRMꢁ High-Z%
RM5 Low-Power
Receive ꢄode
RB±ꢀRBꢁ High-Z%
RB5 Low-Power
Receive ꢄode
Mll High-Z
Table 1c. MAX246 Control Pin Configurations
TRANSMITTERS
RECEIVERS
OPERATION
STATUS
ENA
ENB
TA1–TA4
TB1–TB4
RA1–RA5
Mll Mctive
RB1–RB5
1
1
1
±
Normal Operation
Normal Operation
Mll Mctive
Mll Mctive
Mll Mctive
RB±ꢀRBꢁ High-Z%
RB5 Mctive
Mll Mctive
Mll High-Z
Mll Mctive
Mll Mctive
RM±ꢀRMꢁ High-Z%
RM5 Mctive
±
±
1
±
Shutdown
Shutdown
Mll High-Z
Mll High-Z
Mll Mctive
RM±ꢀRMꢁ High-Z%
RM5 Low-Power
Receive ꢄode
RB±ꢀRBꢁ High-Z%
RM5 Low-Power
Receive ꢄode
Mll High-Z
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Maxim Integrated | 12
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
Table 1d. MAX247/MAX248/MAX249 Control Pin Configurations
TRANSMITTERS
MAX247 TA1–TA4 TB1–TB4
MAX248 TA1–TA4 TB1–TB4
MAX249 TA1–TA3 TB1–TB3
RECEIVERS
RA1–RA4
RA1–RA4
RA1–RA5
RB1–RB5
RB1–RB4
RB1–RB5
OPERATION
STATUS
ENTA ENTB ENRA ENRB
1
1
1
1
1
1
1
1
±
±
±
±
1
1
1
1
±
±
±
±
1
1
1
1
1
1
±
±
1
1
±
±
1
1
±
±
1
±
1
±
1
±
1
±
1
±
1
±
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Mll Mctive Mll Mctive Mll Mctive
Mll Mctive
Mll High-Z% except
RB5 stays active on
ꢄMAXꢁ4
Mll Mctive Mll Mctive Mll Mctive
Mll Mctive Mll Mctive Mll High-Z
Mll Mctive Mll Mctive Mll High-Z
Mll Mctive Mll High-Z Mll Mctive
Mll Mctive Mll High-Z Mll Mctive
Mll Mctive Mll High-Z Mll High-Z
Mll Mctive Mll High-Z Mll High-Z
Mll High-Z Mll Mctive Mll Mctive
Mll High-Z Mll Mctive Mll Mctive
Mll High-Z Mll Mctive Mll High-Z
Mll High-Z Mll Mctive Mll High-Z
Mll Mctive
Mll High-Z% except
RB5 stays active on
ꢄMAXꢁ4
Mll Mctive
Mll High-Z% except
RB5 stays active on
ꢄMAXꢁ4
Mll Mctive
Mll High-Z% except
RB5 stays active on
ꢄMAXꢁ4
Mll Mctive
Mll High-Z% except
RB5 stays active on
ꢄMAXꢁ4
Mll Mctive
Mll High-Z% except
RB5 stays active on
ꢄMAXꢁ4
Low-Power
Mll High-Z Mll High-Z
Receive ꢄode
Low-Power
Receive ꢄode
±
±
±
±
±
±
±
±
1
1
±
±
1
±
1
±
Shutdown
Shutdown
Shutdown
Shutdown
Mll High-Z% except
RB5 stays active on
ꢄMAXꢁ4
Low-Power
Mll High-Z Mll High-Z
Receive ꢄode
Low-Power
Receive ꢄode
Mll High-Z Mll High-Z Mll High-Z
Mll High-Z Mll High-Z Mll High-Z
Mll High-Z% except
RB5 stays active on
ꢄMAXꢁ4
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Maxim Integrated | 13
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
mode% in three-state mode% or when device power is
removedꢂ Outputs can be driven to ±±5Vꢂ ꢅhe power-
supply current typically drops to 8ꢃM in shutdown modeꢂ
ꢅhe ꢄMAXX1 does not have pullup resistors to force the
outputs of the unused drivers lowꢂ Connect unused
Detailed Description
ꢅhe ꢄMAXX1ꢀꢄMAXꢁ9 contain four sections: dual
charge-pump DC-DC voltage converters% RS-X.X dri-
vers% RS-X.X receivers% and receiver and transmitter
enable control inputsꢂ
inputs to GND or V
ꢂ
CC
Dual Charge-Pump Voltage Converter
ꢅhe ꢄMAXX1ꢀꢄMAXꢁ9 have two internal charge-pumps
that convert +5V to ±±1V (unloaded) for RS-X.X driver
operationꢂ ꢅhe first converter uses capacitor C± to dou-
ble the +5V input to +±1V on C. at the V+ outputꢂ ꢅhe
second converter uses capacitor CX to invert +±1V to
-±1V on Cꢁ at the V- outputꢂ
ꢅhe ꢄMAX.9 has a receiver three-state control line% and
the ꢄMAXX.% ꢄMAXX5% ꢄMAX.5% ꢄMAX.6% ꢄMAXꢁ1%
and ꢄMAXꢁ± have both a receiver three-state control
line and a low-power shutdown controlꢂ ꢅable X shows
the effects of the shutdown control and receiver three-
state control on the receiver outputsꢂ
ꢅhe receiver ꢅꢅL/CꢄOS outputs are in a high-imped-
ance% three-state mode whenever the three-state enable
line is high (for the ꢄMAXX5/ꢄMAX.5/ꢄMAX.6/ꢄMAX.9ꢀ
ꢄMAXꢁ±)% and are also high-impedance whenever the
shutdown control line is highꢂ
M small amount of power may be drawn from the +±1V
(V+) and -±1V (V-) outputs to power external circuitry
(see the ꢅypical Operating Characteristics section)%
except on the ꢄMAXX5 and ꢄMAXꢁ5ꢀꢄMAXꢁ4% where
these pins are not availableꢂ V+ and V- are not regulated%
so the output voltage drops with increasing load currentꢂ
Do not load V+ and V- to a point that violates the mini-
mum ±5V EIM/ꢅIM-X.XE driver output voltage when
sourcing current from V+ and V- to external circuitryꢂ
When in low-power shutdown mode% the driver outputs
are turned off and their leakage current is less than ±ꢃM
with the driver output pulled to groundꢂ ꢅhe driver output
leakage remains less than ±ꢃM% even if the transmitter
output is backdriven between 1V and (V
+ 6V)ꢂ Below
CC
-1ꢂ5V% the transmitter is diode clamped to ground with
When using the shutdown feature in the ꢄMAXXX%
ꢄMAXX5% ꢄMAX.1% ꢄMAX.5% ꢄMAX.6% ꢄMAXꢁ1%
ꢄMAXꢁ±% and ꢄMAXꢁ5ꢀꢄMAXꢁ9% avoid using V+ and V-
to power external circuitryꢂ When these parts are shut
down% V- falls to 1V% and V+ falls to +5Vꢂ µor applica-
tions where a +±1V external supply is applied to the V+
pin (instead of using the internal charge pump to gen-
erate +±1V)% the C± capacitor must not be installed and
±kΩ series impedanceꢂ ꢅhe transmitter is also zener
clamped to approximately V
impedance of ±kΩꢂ
+ 6V% with a series
CC
ꢅhe driver output slew rate is limited to less than .1V/ꢃs
as required by the EIM/ꢅIM-X.XE and VꢂX8 specifica-
tionsꢂ ꢅypical slew rates are XꢁV/ꢃs unloaded and
±1V/ꢃs loaded with .Ω and X511pµꢂ
the SHDN pin must be connected to V ꢂ ꢅhis is
CC
because V+ is internally connected to V
modeꢂ
in shutdown
RS-232 Receivers
CC
EIM/ꢅIM-X.XE and VꢂX8 specifications define a voltage
level greater than .V as a logic 1% so all receivers invertꢂ
Input thresholds are set at 1ꢂ8V and XꢂꢁV% so receivers
respond to ꢅꢅL level inputs as well as EIM/ꢅIM-X.XE and
VꢂX8 levelsꢂ
RS-232 Drivers
ꢅhe typical driver output voltage swing is ±8V when
loaded with a nominal 5kΩ RS-X.X receiver and V
=
CC
+5Vꢂ Output swing is guaranteed to meet the EIM/ꢅIM-
X.XE and VꢂX8 specification% which calls for ±5V mini-
mum driver output levels under worst-case conditionsꢂ
Table 2. Three-State Control of
Receivers
ꢅhese include a minimum .kΩ load% V
= +ꢁꢂ5V% and
CC
maximum operating temperatureꢂ Unloaded driver out-
put voltage ranges from (V+ -±ꢂ.V) to (V- +1ꢂ5V)ꢂ
PART
SHDN
EN
EN(R)
RECEIVERS
SHDN
Input thresholds are both ꢅꢅL and CꢄOS compatibleꢂ
ꢅhe inputs of unused drivers can be left unconnected
Low
High Low
High High
A
High Impedance
Mctive
High Impedance
ꢄMAXX.
__
__
since ꢁ11kΩ input pullup resistors to V
are built in
CC
(except for the ꢄMAXX1)ꢂ ꢅhe pullup resistors force the
outputs of unused drivers low because all drivers invertꢂ
ꢅhe internal input pullup resistors typically source ±XꢃM%
except in shutdown mode where the pullups are dis-
abledꢂ Driver outputs turn off and enter a high-imped-
ance state—where leakage current is typically
microamperes (maximum X5ꢃM)—when in shutdown
Low
High
High Impedance
Mctive
ꢄMAXX5
__
__
__
__
__
ꢄMAX.5 Low
ꢄMAX.6 Low
ꢄMAXꢁ1 High
Low
High
A
High Impedance
Mctive
High Impedance
www.maximintegrated.com
Maxim Integrated | 14
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
ꢅhe receiver inputs withstand an input overvoltage up
to ±X5V and provide input terminating resistors with
nominal 5kΩ valuesꢂ ꢅhe receivers implement ꢅype ±
interpretation of the fault conditions of VꢂX8 and
EIM/ꢅIM-X.XEꢂ
Shutdown—MAX222–MAX242
On the ꢄMAXXXF ꢄMAX.5F ꢄMAX.6F ꢄMAXꢁ1F and
ꢄMAXꢁ±F all receivers are disabled during shutdownꢂ
On the ꢄMAXX. and ꢄMAXꢁXF two receivers continue to
operate in a reduced power mode when the chip is in
shutdownꢂ Under these conditionsF the propagation
delay increases to about Xꢂ5ꢃs for a high-to-low input
transitionꢂ When in shutdown% the receiver acts as a
CꢄOS inverter with no hysteresisꢂ ꢅhe ꢄMAXX. and
ꢄMAXꢁX also have a receiver output enable input (EN
for the ꢄMAXꢁX and EN for the ꢄMAXX.) that allows
receiver output control independent of SHDN (SHDN
for ꢄMAXꢁ±)ꢂ With all other devicesF SHDN (SHDN for
ꢄMAXꢁ±) also disables the receiver outputsꢂ
ꢅhe receiver input hysteresis is typically 1ꢂ5V with a
guaranteed minimum of 1ꢂXVꢂ ꢅhis produces clear out-
put transitions with slow-moving input signals% even
with moderate amounts of noise and ringingꢂ ꢅhe
receiver propagation delay is typically 611ns and is
independent of input swing directionꢂ
Low-Power Receive Mode
ꢅhe low-power receive mode feature of the ꢄMAXX.%
ꢄMAXꢁX% and ꢄMAXꢁ5ꢀꢄMAXꢁ9 puts the IC into shut-
down mode but still allows it to receive informationꢂ ꢅhis
is important for applications where systems are periodi-
cally awakened to look for activityꢂ Using low-power
receive mode% the system can still receive a signal that
will activate it on command and prepare it for communi-
cation at faster data ratesꢂ ꢅhis operation conserves
system powerꢂ
ꢅhe ꢄMAXX5 provides five transmitters and five
receiversF while the ꢄMAXꢁ5 provides ten receivers and
eight transmittersꢂ Both devices have separate receiver
and transmitter-enable controlsꢂ ꢅhe charge pumps
turn off and the devices shut down when a logic high is
applied to the ENꢅ inputꢂ In this state% the supply cur-
rent drops to less than X5ꢃM and the receivers continue
to operate in a low-power receive modeꢂ Driver outputs
enter a high-impedance state (three-state mode)ꢂ On
the ꢄMAXX5F all five receivers are controlled by the
ENR inputꢂ On the ꢄMAXꢁ5F eight of the receiver out-
puts are controlled by the ENR inputF while the remain-
ing two receivers (RM5 and RB5) are always activeꢂ
RM±ꢀRMꢁ and RB±ꢀRBꢁ are put in a three-state mode
when ENR is a logic highꢂ
Negative Threshold—MAX243
ꢅhe ꢄMAXꢁ. is pin compatible with the ꢄMAX.XM% differ-
ing only in that RS-X.X cable fault protection is removed
on one of the two receiver inputsꢂ ꢅhis means that control
lines such as CꢅS and RꢅS can either be driven or left
unconnected without interrupting communicationꢂ
Different cables are not needed to interface with different
pieces of equipmentꢂ
Receiver and Transmitter Enable
Control Inputs
ꢅhe input threshold of the receiver without cable fault
protection is -1ꢂ8V rather than +±ꢂꢁVꢂ Its output goes
positive only if the input is connected to a control line
that is actively driven negativeꢂ If not driven% it defaults
to the 1 or “OK to send” stateꢂ NormallyF the ꢄMAXꢁ.’s
other receiver (+±ꢂꢁV threshold) is used for the data line
(ꢅD or RD)F while the negative threshold receiver is con-
nected to the control line (DꢅRF DꢅSF CꢅSF RꢅS% etcꢂ)ꢂ
ꢅhe ꢄMAXX5 and ꢄMAXꢁ5ꢀꢄMAXꢁ9 feature transmitter
and receiver enable controlsꢂ
ꢅhe receivers have three modes of operation: full-speed
receive (normal active)F three-state (disabled)F and low-
power receive (enabled receivers continue to function
at lower data rates)ꢂ ꢅhe receiver enable inputs control
the full-speed receive and three-state modesꢂ ꢅhe
transmitters have two modes of operation: full-speed
transmit (normal active) and three-state (disabled)ꢂ ꢅhe
transmitter enable inputs also control the shutdown
modeꢂ ꢅhe device enters shutdown mode when all
transmitters are disabledꢂ Enabled receivers function in
the low-power receive mode when in shutdownꢂ
Other members of the RS-X.X family implement the
optional cable fault protection as specified by EIM/ꢅIM-
X.XE specificationsꢂ ꢅhis means a receiver output goes
high whenever its input is driven negativeF left uncon-
nectedF or shorted to groundꢂ ꢅhe high output tells the
serial communications IC to stop sending dataꢂ ꢅo
avoid thisF the control lines must either be driven or
connected with jumpers to an appropriate positive volt-
age levelꢂ
www.maximintegrated.com
Maxim Integrated | 15
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
ꢅables ±aꢀ±d define the control statesꢂ ꢅhe ꢄMAXꢁꢁ
has no control pins and is not included in these tablesꢂ
ꢅhe ꢄMAXꢁ9 provides ten receivers and six drivers with
four control pinsꢂ ꢅhe ENRA and ENRB receiver enable
inputs each control five receiver outputsꢂ ꢅhe ENTA
and ENTB transmitter enable inputs control three dri-
vers eachꢂ ꢅhere is no always-active receiverꢂ ꢅhe
device enters shutdown mode and transmitters go into
a three-state mode with a logic high on both ENTA and
ENTBꢂ In shutdown mode% active receivers operate in a
low-power receive mode at data rates up to X1kb/sꢂ
ꢅhe ꢄMAXꢁ6 has ten receivers and eight drivers with
two control pins% each controlling one side of the
deviceꢂ M logic high at the M-side control input (ENA)
causes the four M-side receivers and drivers to go into
a three-state modeꢂ Similarly% the B-side control input
(ENB) causes the four B-side drivers and receivers to
go into a three-state modeꢂ Ms in the ꢄMAXꢁ5% one M-
side and one B-side receiver (RM5 and RB5) remain
active at all timesꢂ ꢅhe entire device is put into shut-
down mode when both the M and B sides are disabled
(ENA = ENB = +5V)ꢂ
Applications Information
µigures 5 through X5 show pin configurations and typi-
cal operating circuitsꢂ In applications that are sensitive
to power-supply noise% V
ground with a capacitor of the same value as C± and
CX connected as close as possible to the deviceꢂ
should be decoupled to
CC
ꢅhe ꢄMAXꢁ4 provides nine receivers and eight drivers
with four control pinsꢂ ꢅhe ENRA and ENRB receiver
enable inputs each control four receiver outputsꢂ ꢅhe
ENTA and ENTB transmitter enable inputs each control
four driversꢂ ꢅhe ninth receiver (RB5) is always activeꢂ
ꢅhe device enters shutdown mode with a logic high on
both ENTA and ENTBꢂ
ꢅhe ꢄMAXꢁ8 provides eight receivers and eight drivers
with four control pinsꢂ ꢅhe ENRA and ENRB receiver
enable inputs each control four receiver outputsꢂ ꢅhe
ENTA and ENTB transmitter enable inputs control four
drivers eachꢂ ꢅhis part does not have an always-active
receiverꢂ ꢅhe device enters shutdown mode and trans-
mitters go into a three-state mode with a logic high on
both ENTA and ENTBꢂ
www.maximintegrated.com
Maxim Integrated | 16
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
+5V INPUT
C3
TOP VIEW
C5
16
+
V
1
CC
2
C1+
V+
V
1
2
3
4
5
6
7
8
CC
16
15
14
13
12
11
10
9
C1+
C1-
+10V
V+
V-
+5V TO +10V
VOLTAGE DOUBLER
C1
C2
3
4
GND
6
-10V
C4
C2+
C2-
+10V TO -10V
VOLTAGE INVERTER
C1-
T1OUT
R1IN
5
C2+
C2-
MAX220
MAX232
MAX232A
+5V
R1OUT
T1IN
400kΩ
T1IN
T1OUT
11
14
V-
+5V
TTL/CMOS
INPUTS
RS-232
T2OUT
T2IN
400kΩ
T2IN
OUTPUTS
T2OUT
R1IN
7
R2OUT
R2IN
10
12
DIP/SO
R1OUT
R2OUT
13
TTL/CMOS
OUTPUTS
RS-232
INPUTS
5kΩ
CAPACITANCE (μF)
C1 C2 C3 C4 C5
MAX220 0.047 0.33 0.33 0.33 0.33
MAX232 1.0 1.0 1.0 1.0 1.0
MAX232A 0.1 0.1 0.1 0.1 0.1
DEVICE
8
9
R2IN
5kΩ
GND
15
µigure 5ꢂ ꢄMAXX1/ꢄMAX.X/ꢄMAX.XM Pin Configuration and ꢅypical Operating Circuit
+5V INPUT
17
C3
TOP VIEW
ALL CAPACITORS = 0.1μF
C5
V
2
CC
3
7
+10V
C1+
+5V TO +10V
C1-
VOLTAGE DOUBLER
V+
V-
+
C1
4
5
(N.C.) EN
C1+
SHDN
1
2
20
19
18
17
16
15
14
13
12
11
+
C2+
C2-
-10V
C4
(N.C.) EN
C1+
SHDN
V
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
CC
+10V TO -10V
VOLTAGE INVERTER
C2
6
V+
GND
T1OUT
N.C.
V
3
CC
+5V
400kΩ
12 T1IN
+5V
400kΩ
11 T2IN
C1-
V+
GND
4
(EXCEPT MAX220)
T1OUT
C1-
MAX222
MAX242
C2+
C2-
T1OUT
R1IN
5
15
MAX222
MAX242
C2+
C2-
R1IN
R1OUT
N.C.
6
TTL/CMOS
INPUTS
RS-232
OUTPUTS
(EXCEPT MAX220)
T2OUT
V-
R1OUT
T1IN
7
8
T2OUT
V-
8
T2OUT
R2IN
T1IN
T2IN
9
13 R1OUT
R1IN
14
R2IN
R2OUT
R2OUT
T2IN
10
TTL/CMOS
OUTPUTS
RS-232
INPUTS
5kΩ
10
1
R2OUT
(N.C.)
R2IN
9
DIP/SO
SSOP
EN
5kΩ
18
( ) ARE FOR MAX222 ONLY.
PIN NUMBERS IN TYPICAL OPERATING CIRCUIT ARE FOR DIP/SO PACKAGES ONLY.
SHDN
GND
16
µigure 6ꢂ ꢄMAXXX/ꢄMAXꢁX Pin Configurations and ꢅypical Operating Circuit
www.maximintegrated.com
Maxim Integrated | 17
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
+5V
0.1μF
TOP VIEW
28
27
V
V
CC
CC
+5V
+5V
400kΩ
T1IN
T2IN
T3IN
T4IN
3
4
11
12
18
17
+
T1OUT
T2OUT
T3OUT
ENR
ENR
T1IN
T2IN
V
V
1
2
CC
28
400kΩ
400kΩ
400kΩ
400kΩ
27 CC
ENT
26
3
+5V
T3IN
25
4
MAX225
R1OUT
R2OUT
R3OUT
R3IN
T4IN
5
24
25
24
+5V
+5V
23 T5IN
6
R4OUT
7
22
T4OUT
T5OUT
21 R5OUT
8
R2IN
R1IN
R5IN
20
9
T5IN
ENT
R4IN
10
11
12
13
14
19
18
17
23
26
16
15
T1OUT
T2OUT
T3OUT
T4OUT
T5OUT
T5OUT
T5OUT
R1IN
R1OUT
R2OUT
R3OUT
R4OUT
R5OUT
GND
GND
16
15
5
10
5kΩ
R2IN
5kΩ
R3IN
5kΩ
R4IN
5kΩ
R5IN
5kΩ
SO
6
7
9
8
MAX225 FUNCTIONAL DESCRIPTION
5 RECEIVERS
5 TRANSMITTERS
22
21
19
20
2 CONTROL PINS
1 RECEIVER ENABLE (ENR)
1 TRANSMITTER ENABLE (ENT)
ENR
ENR
1
2
PINS (ENR, GND, V , T5OUT) ARE INTERNALLY CONNECTED.
CC
CONNECT EITHER OR BOTH EXTERNALLY. T5OUT IS A SINGLE DRIVER.
GND
14
GND
13
µigure 4ꢂ ꢄMAXX5 Pin Configuration and ꢅypical Operating Circuit
www.maximintegrated.com
Maxim Integrated | 18
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
+5V INPUT
TOP VIEW
1.0μF
11
1.0μF
12
V
C1+
CC
13
V+
V-
+5V TO +10V
VOLTAGE DOUBLER
1.0μF
1.0μF
14
15
C1-
C2+
+10V TO -10V
VOLTAGE INVERTER
17
16
C2-
1.0μF
+5V
400kΩ
T1OUT
T2OUT
T1IN
+5V
7
2
3
1
T1
+
T3OUT
T1OUT
T2OUT
R2IN
1
2
3
4
5
6
7
8
9
28 T4OUT
27 R3IN
400kΩ
6
T2IN
+5V
T2
26 R3OUT
25 SHDN (SHDN)
24 EN (EN)
23 R4IN*
22 R4OUT*
21 T4IN
RS-232
OUTPUTS
TTL/CMOS
INPUTS
400kΩ
R2OUT
T2IN
MAX223
MAX241
T3OUT
T3IN
20
T3
+5V
T1IN
400kΩ
R1OUT
R1IN
T4OUT
R1IN
T4IN
21
8
28
9
T4
20 T3IN
GND 10
11
19 R5OUT*
18 R5IN*
17 V-
R1OUT
R1
R2
V
CC
5kΩ
R2IN
C1+ 12
V+ 13
16 C2-
R2OUT
R3OUT
5
4
C1- 14
15 C2+
5kΩ
Wide SO/
SSOP
26
R3IN 27
5kΩ
RS-232
INPUTS
LOGIC
OUTPUTS
R3
R4
R5
22 R4OUT
R4IN
23
5kΩ
R5OUT
R5IN
19
24
18
25
*R4 AND R5 IN MAX223 REMAIN ACTIVE IN SHUTDOWN.
5kΩ
SHDN
(SHDN)
NOTE: PIN LABELS IN ( ) ARE FOR MAX241.
EN (EN)
GND
10
µigure 8ꢂ ꢄMAXX./ꢄMAXꢁ± Pin Configuration and ꢅypical Operating Circuit
www.maximintegrated.com
Maxim Integrated | 19
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
+5V INPUT
1.0μF
TOP VIEW
7
1.0μF
1.0μF
8
V
9
CC
C1+
C1-
V+
V-
+5V TO +10V
10
1.0μF
1.0μF
VOLTAGE DOUBLER
+
11
12
T3OUT
T1OUT
T2OUT
T2IN
T4OUT
T5IN
N.C.
1
2
20
19
18
17
16
15
14
13
12
11
C2+
C2-
+10V TO -10V
VOLTAGE INVERTER
13
+5V
3
400kΩ
SHDN
T5OUT
T4IN
T3IN
V-
4
5 T1IN
T1OUT
T2OUT
T3OUT
T4OUT
T5OUT
2
T1
400kΩ
T2
MAX230
T1IN
GND
+5V
5
6
T2IN
4
3
V
CC
+5V
7
400kΩ
T3
400kΩ
T4
400kΩ
T5
C1+
V+
8
T3IN
T4IN
TTL/CMOS
INPUTS
14
15
1
RS-232
OUTPUTS
C2-
9
+5V
+5V
C1-
C2+
10
20
DIP/SO
T5IN
19
18
16
17
N.C.x
SHDN
GND
6
µigure 9ꢂ ꢄMAX.1 Pin Configuration and ꢅypical Operating Circuit
+5V INPUT
TOP VIEW
+7.5V TO +12V
1.0μF
13 (15)
1
2
14
3
(16)
V
CC
C1+
C1-
V+
V-
+12V TO -12V
VOLTAGE CONVERTER
1.0μF
C2
1.0μF
+
+
+5V
C+
C-
V-
V+
V
1
2
3
4
5
6
7
8
C+
C-
1
2
3
4
5
6
7
14 V+
13
16
400kΩ
(10)
(13)
(12)
V
CC
15 CC
T1OUT
11
T1IN
+5V
8
T1
GND
V-
12 GND
11 T1OUT
10 R1IN
14
13
12
11
10
9
TTL/CMOS
INPUTS
RS-232
OUTPUTS
T1OUT
R1IN
T2OUT
R2IN
MAX231
T2OUT
R2IN
R2OUT
T2IN
MAX231
400kΩ
T2OUT
R1IN
4
T2IN
7
T2
R2OUT
T2IN
R1OUT
T1IN
9
8
R1OUT
T1IN
(11)
R1OUT
10
9
R1
R2
TTL/CMOS
OUTPUTS
N.C.
5kΩ
RS-232
INPUTS
N.C.
DIP
R2OUT
R2IN
5
SO
6
5kΩ
GND
PIN NUMBERS IN ( ) ARE FOR SO PACKAGE.
12 (14)
µigure ±1ꢂ ꢄMAX.± Pin Configurations and ꢅypical Operating Circuit
www.maximintegrated.com
Maxim Integrated | 20
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
+5V INPUT
1.0μF
TOP VIEW
7
V
CC
+5V
+5V
400kΩ
400kΩ
+
T1OUT
5
T1IN
T2IN
2
1
T2IN
T1IN
R2OUT
R2IN
1
2
20
19
18
17
16
15
14
13
12
11
TTL/CMOS
INPUTS
RS-232
OUTPUTS
R1OUT
R1IN
T2OUT
V-
3
T2OUT
R1IN
18
4
4
R1OUT
3
MAX233
T1OUT
GND
C2-
5
MAX233A
5kΩ
TTL/CMOS
OUTPUTS
C2+
6
RS-232
INPUTS
V
CC
V+ (C1-)
C1- (C1+)
V- (C2+)
C2+ (C2-)
7
R2OUT
R2IN 19
20
(V+) C1+
GND
8
8 (13)
11 (12)
5kΩ
9
C1+
C1-
V-
DO NOT MAKE
CONNECTIONS TO
THESE PINS
C2+
13 (14)
12 (10)
15
16
(V-) CS-
10
C2+
C2-
INTERNAL -10V
POWER SUPPLY
17
10 (11)
DIP/SO
V-
CS-
14 (8)
INTERNAL +10V
POWER SUPPLY
V+
GND
6
GND
9
PIN NAMES IN ( ) ARE FOR SO PACKAGE.
µigure ±±ꢂ ꢄMAX../ꢄMAX..M Pin Configuration and ꢅypical Operating Circuit
+5V INPUT
1.0μF
TOP VIEW
6
1.0μF
7
V
8
C1+
CC
+5V TO +10V
VOLTAGE DOUBLER
V+
V-
1.0μF
1.0μF
9
C1-
C2+
10
+10V TO -10V
VOLTAGE INVERTER
12
+
11
C2-
1.0μF
T1OUT
T2OUT
T2IN
T3OUT
T4OUT
T4IN
T3IN
V-
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
+5V
400kΩ
400kΩ
T1IN
T1OUT
T2OUT
T3OUT
T4OUT
4
3
1
2
T1
T2
T3
T4
T1IN
MAX234
+5V
+5V
+5V
GND
T2IN
T3IN
V
C2-
CC
RS-232
OUTPUTS
C1+
V+
C2+
TTL/CMOS
INPUTS
400kΩ
C1-
13
16
15
DIP/SO
400kΩ
14 T4IN
GND
5
µigure ±Xꢂ ꢄMAX.ꢁ Pin Configuration and ꢅypical Operating Circuit
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Maxim Integrated | 21
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
+5V INPUT
TOP VIEW
1.0μF
12
V
CC
+5V
400kΩ
T1OUT
T1IN
8
3
T1
+5V
+5V
+5V
+5V
400kΩ
400kΩ
400kΩ
400kΩ
T2OUT
T3OUT
T4OUT
T2IN
T3IN
T4IN
7
15
16
4
T2
T3
T4
2
1
TTL/CMOS
INPUTS
RS-232
OUTPUTS
+
T4OUT
T3OUT
T1OUT
T2OUT
R2IN
1
2
3
4
5
6
7
8
9
24 R3IN
23 R3OUT
22 T5IN
21 SHDN
20 EN
MAX235
T5OUT
R1IN
22 T5IN
19
10
T5
T1
R2OUT
T2IN
19 T5OUT
18 R4IN
17 R4OUT
16 T4IN
15 T3IN
14 R5OUT
13 R5IN
9
R1OUT
T1IN
5kΩ
R2IN
R1OUT
R1IN 10
GND 11
5
R2OUT
R3OUT
R4OUT
6
R2
5kΩ
R3IN 24
5kΩ
R4IN
5kΩ
R5IN
V
12
CC
23
TTL/CMOS
OUTPUTS
RS-232
INPUTS
R3
R4
DIP
18
17
R5OUT
EN
13
14
20
R5
5kΩ
SHDN
21
GND
11
µigure ±.ꢂ ꢄMAX.5 Pin Configuration and ꢅypical Operating Circuit
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Maxim Integrated | 22
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
TOP VIEW
+5V INPUT
1.0μF
9
1.0μF
1.0μF
10
11
15
C1+
V
CC
V+
V-
+5V TO +10V
VOLTAGE DOUBLER
1.0μF
1.0μF
12
13
C1-
C2+
+10V TO -10V
VOLTAGE INVERTER
14
C2-
+5V
400kΩ
T1OUT
T1IN
7
2
T1
+
T3OUT
T1OUT
T2OUT
R1IN
1
2
3
4
5
6
7
8
9
24 T4OUT
23 R2IN
22 R2OUT
21 SHDN
20 EN
+5V
+5V
+5V
400kΩ
T2OUT
T3OUT
T2IN
T3IN
6
3
1
T2
TTL/CMOS
INPUTS
RS-232
OUTPUTS
400kΩ
MAX236
R1OUT
T2IN
18
T3
19 T4IN
18 T3IN
17 R3OUT
16 R3IN
15 V-
T1IN
400kΩ
GND
T4OUT 24
19 T4IN
T4
V
CC
C1+ 10
V+ 11
14 C2-
R1IN
4
5
R1OUT
R1
C1- 12
13 C2+
5kΩ
DIP/SO
22
23
R2OUT
R2IN
5kΩ
RS-232
INPUTS
TTL/CMOS
OUTPUTS
R2
R3
R3OUT
EN
R3IN 16
5kΩ
SHDN
17
20
21
GND
8
µigure ±ꢁꢂ ꢄMAX.6 Pin Configuration and ꢅypical Operating Circuit
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Maxim Integrated | 23
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
TOP VIEW
+5V INPUT
1.0μF
1.0μF
1.0μF
9
10
V
11
15
CC
C1+
V+
V-
+5V TO +10V
VOLTAGE DOUBLER
1.0μF
1.0μF
12
13
C1-
C2+
+10V TO -10V
VOLTAGE INVERTER
14
C2-
+5V
+5V
+5V
+5V
400kΩ
T1
+
T3OUT
T1OUT
T2OUT
R1IN
1
2
3
4
5
6
7
8
9
24 T4OUT
23 R2IN
22 R2OUT
21 T5IN
20 T5OUT
19 T4IN
18 T3IN
17 R3OUT
16 R3IN
15 V-
T1OUT
T2OUT
T3OUT
T1IN
7
2
400kΩ
T2IN
T3IN
6
3
1
T2
MAX237
R1OUT
T2IN
400kΩ
18
TTL/CMOS
INPUTS
RS-232
OUTPUTS
T3
T1IN
400kΩ
GND
T4OUT 24
T5OUT 20
19 T4IN
21 T5IN
V
T4
CC
+5V
C1+ 10
V+ 11
400kΩ
14 C2-
T5
C1- 12
13 C2+
DIP/SO
5
R1OUT
R1IN
5kΩ
4
R1
22
R2IN
5kΩ
R2OUT
23
RS-232
INPUTS
TTL/CMOS
OUTPUTS
R2
R3
R3OUT
R3IN 16
5kΩ
17
GND
8
µigure ±5ꢂ ꢄMAX.4 Pin Configuration and ꢅypical Operating Circuit
www.maximintegrated.com
Maxim Integrated | 24
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
TOP VIEW
+5V INPUT
1.0μF
1.0μF
1.0μF
9
10
V
CC
11
15
C1+
V+
V-
+5V TO +10V
VOLTAGE DOUBLER
1.0μF
1.0μF
12
13
C1-
C2+
+10V TO -10V
VOLTAGE INVERTER
14
C2-
+5V
400kΩ
T1
+
T1IN
5
18
19
2
T2OUT
T1OUT
R2IN
1
2
3
4
5
6
7
8
9
24 T3OUT
23 R3IN
22 R3OUT
21 T4IN
20 T4OUT
19 T3IN
18 T2IN
17 R4OUT
16 R4IN
15 V-
T1OUT
T2OUT
+5V
+5V
400kΩ
T2IN
T3IN
1
T2
R2OUT
T1IN
TTL/CMOS
INPUTS
RS-232
OUTPUTS
MAX238
400kΩ
R1OUT
R1IN
24
T3OUT
T4OUT
T3
400kΩ
T4
+5V
GND
20
V
21 T4IN
CC
C1+ 10
V+ 11
14 C2-
C1- 12
13 C2+
6
4
R1OUT
R1IN
7
3
R1
R2
5kΩ
DIP/SO
R2OUT
R2IN
5kΩ
TTL/CMOS
OUTPUTS
RS-232
INPUTS
R3OUT
R4OUT
23
16
22
17
R3IN
5kΩ
R4IN
5kΩ
R3
R4
GND
8
µigure ±6ꢂ ꢄMAX.8 Pin Configuration and ꢅypical Operating Circuit
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Maxim Integrated | 25
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
TOP VIEW
+7.5V TO +13.2V
+5V INPUT
INPUT
1.0μF
4
5
V
V+
CC
6
8
C1+
C1-
V-
+10V TO -10V
1.0μF
7
1.0μF
VOLTAGE INVERTER
+5V
+5V
400kΩ
T1
T1OUT
T2OUT
T1IN
T2IN
24
23
19
20
+
R1OUT
R1IN
1
2
3
4
5
6
7
8
9
24 T1IN
23 T2IN
22 R2OUT
21 R2IN
20 T2OUT
19 T1OUT
18 R3IN
17 R3OUT
16 T3IN
15 N.C.
400kΩ
T2
TTL/CMOS
INPUTS
RS-232
OUTPUTS
GND
+5V
V
CC
400kΩ
MAX239
V+
T3OUT 13
T3IN
16
1
T3
C+
C-
V-
R1IN
2
R1OUT
R1
R2
R3
R5IN
5kΩ
R2IN
R5OUT 10
R4OUT 11
R4IN 12
14 EN
22 R2OUT
21
13 T3OUT
5kΩ
R3IN 18
5kΩ
R4IN 12
5kΩ
R5IN
DIP/SO
17
R3OUT
RS-232
INPUTS
TTL/CMOS
OUTPUTS
11 R4OUT
R4
R5
R5OUT
EN
10
14
9
5kΩ
N.C.
15
GND
3
µigure ±4ꢂ ꢄMAX.9 Pin Configuration and ꢅypical Operating Circuit
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Maxim Integrated | 26
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
+5V INPUT
1.0μF
TOP VIEW
19
1.0μF
25
V
C1+
CC
26
V+
V-
+5V TO +10V
VOLTAGE DOUBLER
1.0μF
1.0μF
27
28
C1-
C2+
+5V TO -10V
VOLTAGE INVERTER
30
29
C2-
1.0μF
+5V
T1IN
+5V
14 T2IN
+5V
T3IN
400kΩ
T1OUT
T2OUT
15
7
T1
400kΩ
T2
8
6
5
400kΩ
T3
T3OUT
T4OUT
RS-232
OUTPUTS
37
TTL/CMOS
INPUTS
+5V
T4IN
400kΩ
+
N.C.
R2OUT
T2IN
T1IN
R1OUT
R1IN
12
13
14
15
16
17
18
19
20
21
22
44
43
42
41
40
39
38
37
36
35
34
N.C.
SHDN
EN
T5OUT
R4IN
R4OUT
T4IN
38
2
T4
+5V
T5IN
400kΩ
T5OUT
R1IN
41
17
T5
MAX240
GND
16 R1OUT
R1
V
T3IN
CC
5kΩ
R2IN
N.C.
N.C.
N.C.
R5OUT
R5IN
N.C.
13 R2OUT
10
4
R2
5kΩ
3
R3OUT
R3IN
5kΩ
RS-232
INPUTS
TTL/CMOS
OUTPUTS
R3
R4
R5
Plastic FP
39 R4OUT
R4IN
40
5kΩ
R5IN
R5OUT
36
35
43
5kΩ
SHDN
42 EN
GND
18
µigure ±8ꢂ ꢄMAXꢁ1 Pin Configuration and ꢅypical Operating Circuit
www.maximintegrated.com
Maxim Integrated | 27
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
+5V INPUT
TOP VIEW
0.1μF
0.1μF
16
1
V
CC
C1+
2
6
+10V
-10V
+5V TO +10V
VOLTAGE DOUBLER
V+
V-
0.1μF
0.1μF
3
4
C1-
C2+
+
C1+
V+
1
2
3
4
5
6
7
8
16 V
CC
+10V TO -10V
5
VOLTAGE INVERTER
C2-
15 GND
14 T1OUT
13 R1IN
12 R1OUT
11 T1IN
10 T2IN
0.1μF
+5V
C1-
400kΩ
400kΩ
C2+
C2-
MAX243
T1IN
T1OUT
11
14
+5V
V-
TTL/CMOS
INPUTS
RS-232
OUTPUTS
T2OUT
R2IN
T2IN
T2OUT
R1IN
7
10
12
9
R2OUT
DIP/SO
R1OUT
13
TTL/CMOS
OUTPUTS
RS-232
INPUTS
5kΩ
R2IN
R2OUT
8
9
RECEIVER INPUT R1 OUTPUT R2 OUTPUT
5kΩ
≤ -3V
OPEN
≥ +3V
HIGH
HIGH
LOW
HIGH
LOW
LOW
GND
15
µigure ±9ꢂ ꢄMAXꢁ. Pin Configuration and ꢅypical Operating Circuit
www.maximintegrated.com
Maxim Integrated | 28
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
+5V
1μF
TOP VIEW
1μF
20
21
V
22
C1+
C1-
CC
1μF
1μF
23
24
V+
V-
+5V TO +10V VOLTAGE DOUBLER
26
C2+
C2-
1μF
25
+10V TO -10V VOLTAGE INVERTER
43
42 41 40
6
5
4
3
2
1
44
+5V
+5V
+5V
+5V
2 TA1OUT
TB1OUT 44
+
400kΩ
400kΩ
15 TA1IN
2 TA2OUT
TB1IN 30
RA3IN
RA2IN
RA1IN
7
8
9
39 RB4IN
38 RB3IN
37 RB2IN
36 RB1IN
35 RB1OUT
34 RB2OUT
33 RB3OUT
32 RB4OUT
31 RB5OUT
30 TB1IN
TB2OUT 43
RA1OUT 10
RA2OUT 11
RA3OUT 12
RA4OUT 13
RA5OUT 14
TA1IN 15
16 TA2IN
3 TA3OUT
TB2IN 29
MAX244
+5V
+5V
+5V
+5V
TB3OUT 42
400kΩ
400kΩ
17 TA3IN
4 TA4OUT
TB3IN 28
TB4OUT 41
TA2IN 16
TA3IN 17
29 TB2IN
18 TA4IN
9 RA1IN
TB4IN 27
RB1IN 36
18 19 20 21 22 23 24 25 26 27 28
5kΩ
5kΩ
PLCC
10 RA1OUT
8 RA2IN
RB1OUT 35
RB2IN 37
5kΩ
5kΩ
MAX249 FUNCTIONAL DESCRIPTION
10 RECEIVERS
11 RA2OUT
7 RA3IN
RB2OUT 34
RB3IN 38
5 A-SIDE RECEIVERS
5 B-SIDE RECEIVERS
8 TRANSMITTERS
5kΩ
5kΩ
4 A-SIDE TRANSMITTERS
4 B-SIDE TRANSMITTERS
NO CONTROL PINS
12 RA3OUT
6 RA4IN
RB3OUT 33
RB4IN 39
5kΩ
5kΩ
13 RA4OUT
5 RA5IN
RB4OUT 32
RB5IN 40
5kΩ
14 RA5OUT
5kΩ
RB5OUT 31
GND
19
µigure X1ꢂ ꢄMAXꢁꢁ Pin Configuration and ꢅypical Operating Circuit
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Maxim Integrated | 29
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
+5V
TOP VIEW
1μF
40
V
CC
+
+5V
+5V
+5V
+5V
16 TA1OUT
TB1OUT 24
ENR
TA1IN
1
2
3
4
5
6
7
8
9
40
V
CC
400kΩ
400kΩ
39 ENT
2 TA1IN
TB1IN 38
TA2IN
38 TB1IN
37 TB2IN
36 TB3IN
35 TB4IN
34 RB5OUT
33 RB4OUT
32 RB3OUT
31 RB2OUT
17 TA2OUT
TB2OUT 23
TA3IN
TA4IN
3 TA2IN
TB2IN 37
RA5OUT
RA4OUT
RA3OUT
RA2OUT
+5V
+5V
+5V
+5V
MAX245
18 TA3OUT
TB3OUT 22
400kΩ
400kΩ
4 TA3IN
TB3IN 36
19 TA4OUT
TB4OUT 21
RA1OUT 10
RA1IN 11
RA2IN 12
RA3IN 13
RA4IN 14
RA5IN 15
TA1OUT 16
TA2OUT 17
TA3OUT 18
TA4OUT 19
GND 20
30 RB1OUT
29 RB1IN
28 RB2IN
27 RB3IN
26 RB4IN
25 RB5IN
24 TB1OUT
23 TB2OUT
22 TB3OUT
21 TB4OUT
5 TA4IN
TB4IN 35
ENT 39
1
ENR
11 RA1IN
RB1IN 29
5kΩ
5kΩ
10 RA1OUT
12 RA2IN
RB1OUT 30
RB2IN 28
5kΩ
5kΩ
9 RA2OUT
13 RA3IN
RB2OUT 31
RB3IN 27
DIP
5kΩ
5kΩ
8 RA3OUT
14 RA4IN
RB3OUT 32
RB4IN 26
MAX245 FUNCTIONAL DESCRIPTION
10 RECEIVERS
5 A-SIDE RECEIVERS (R ALWAYS ACTIVE)
A5
5 B-SIDE RECEIVERS (R ALWAYS ACTIVE)
B5
5kΩ
5kΩ
8 TRANSMITTTERS
7 RA4OUT
15 RA5IN
RB4OUT 33
RB5IN 25
4 A-SIDE TRANSMITTERS
2 CONTROL PINS
1 RECEIVER ENABLE (ENR)
1 TRANSMITTER ENABLE (ENT)
5kΩ
6 RA5OUT
5kΩ
RB5OUT 34
GND
20
µigure X±ꢂ ꢄMAXꢁ5 Pin Configuration and ꢅypical Operating Circuit
www.maximintegrated.com
Maxim Integrated | 30
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
+5V
TOP VIEW
1μF
40
+
V
CC
ENA
TA1IN
1
2
3
4
5
6
7
8
9
40
V
CC
+5V
+5V
TA1OUT
TA1IN
TB1OUT 24
TB1IN 38
16
2
39 ENB
400kΩ
TA2IN
38 TB1IN
37 TB2IN
36 TB3IN
35 TB4IN
34 RB5OUT
33 RB4OUT
32 RB3OUT
31 RB2OUT
TA3IN
+5V
+5V
17 TA2OUT
TB2OUT 23
TB2IN 37
TA4IN
400kΩ
RA5OUT
RA4OUT
RA3OUT
RA2OUT
3
TA2IN
MAX246
+5V
+5V
18 TA3OUT
TB3OUT 22
TB3IN 36
400kΩ
TA3IN
4
RA1OUT 10
+5V
+5V
TA4OUT
TB4OUT 21
19
RA1IN 11
RA2IN 12
RA3IN 13
RA4IN 14
RA5IN 15
TA1OUT 16
TA2OUT 17
TA3OUT 18
TA4OUT 19
GND 20
30 RB1OUT
29 RB1IN
28 RB2IN
27 RB3IN
26 RB4IN
25 RB5IN
24 TB1OUT
23 TB2OUT
22 TB3OUT
21 TB4OUT
400kΩ
TA4IN
ENA
TB4IN
ENB
5
1
35
39
11 RA1IN
RB1IN 29
5kΩ
5kΩ
10 RA1OUT
12 RA2IN
RB1OUT 30
RB2IN 28
5kΩ
5kΩ
9
RA2OUT
RB2OUT 31
RB3IN 27
DIP
13 RA3IN
5kΩ
5kΩ
MAX246 FUNCTIONAL DESCRIPTION
10 RECEIVERS
8
RA3OUT
RB3OUT 32
RB4IN 26
5 A-SIDE RECEIVERS (R ALWAYS ACTIVE)
A5
5 B-SIDE RECEIVERS (R ALWAYS ACTIVE)
B5
14 RA4IN
8 TRANSMITTERS
5kΩ
5kΩ
4 A-SIDE TRANSMITTERS
4 B-SIDE TRANSMITTERS
2 CONTROL PINS
7
RA4OUT
RB4OUT 33
RB5IN 25
15 RA5IN
ENABLE A-SIDE (ENA)
ENABLE B-SIDE (ENB)
5kΩ
RA5OUT
5kΩ
6
RB5OUT 34
GND
20
µigure XXꢂ ꢄMAXꢁ6 Pin Configuration and ꢅypical Operating Circuit
www.maximintegrated.com
Maxim Integrated | 31
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
+5V
TOP VIEW
1μF
40
V
CC
1 ENTA
ENTB 39
+
+5V
+5V
ENTA
TA1IN
1
2
3
4
5
6
7
8
9
40
39
38
37
36
35
34
33
32
31
30
V
CC
16 TA1OUT
TB1OUT 24
ENTB
TB1IN
TB2IN
TB3IN
400kΩ
TA2IN
2 TA1IN
17 TA2OUT
3 TA2IN
TB1IN 38
TB2OUT 23
TB2IN 37
+5V
+5V
TA3IN
TA4IN
400kΩ
RB5OUT
RA4OUT
RA3OUT
RA2OUT
TB4IN
RB4OUT
MAX247
+5V
+5V
18 TA3OUT
4 TA3IN
TB3OUT 22
TB3IN 36
RB3OUT
RB2OUT
RB1OUT
400kΩ
RA1OUT 10
+5V
+5V
19 TA4OUT
TB4OUT 21
ENRA
RA1IN
RA2IN
RA3IN
ENRB
11
12
13
14
400kΩ
29 RB1IN
28 RB2IN
27 RB3IN
26 RB4IN
25 RB5IN
24 TB1OUT
23 TB2OUT
22 TB3OUT
21 TB4OUT
5 TA4IN
TB4IN 35
RB5IN 25
6 RB5OUT
5kΩ
RA4IN 15
16
17
18
19
20
TA1OUT
TA2OUT
TA3OUT
TA4OUT
GND
12 RA1IN
RB1IN 29
5kΩ
5kΩ
10 RA1OUT
13 RA2IN
RB1OUT 31
RB2IN 28
DIP
5kΩ
5kΩ
MAX247 FUNCTIONAL DESCRIPTION
9 RECEIVERS
9 RA2OUT
14 RA3IN
RB2OUT 32
RB3IN 27
4 A-SIDE RECEIVERS
5 B-SIDE RECEIVERS (R ALWAYS ACTIVE)
B5
8 TRANSMITTERS
5kΩ
5kΩ
4 A-SIDE TRANSMITTERS
4 B-SIDE TRANSMITTERS
4 CONTROL PINS
8 RA3OUT
15 RA4IN
RB3OUT 33
RB4IN 26
ENABLE RECEIVER A-SIDE (ENRA)
ENABLE RECEIVER B-SIDE (ENRB)
ENABLE RECEIVER A-SIDE (ENTA)
ENABLE RECEIVER B-SIDE (ENTB)
5kΩ
5kΩ
7 RA4OUT
11 ENRA
RB4OUT 34
ENRB 30
GND
20
µigure X.ꢂ ꢄMAXꢁ4 Pin Configuration and ꢅypical Operating Circuit
www.maximintegrated.com
Maxim Integrated | 32
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
TOP VIEW
+5V
1μF
1μF
20
21
C1+
C1-
V
22
CC
V+
V-
1μF
1μF
23
24
+5V TO +10V VOLTAGE DOUBLER
26
C2+
C2-
1μF
43
42 41 40
6
5
4
3
2
1
44
25
+10V TO -10V VOLTAGE INVERTER
18 ENTA
ENTB 27
+
+5V
+5V
+5V
1 TA1OUT
TB1OUT 44
RA2IN
RA1IN
ENRA
7
8
9
39 RB3IN
38 RB2IN
37 RB1IN
36 ENRB
400kΩ
14 TA1IN
2 TA2OUT
15 TA2IN
3 TA3OUT
16 TA3IN
4 TA4OUT
17 TA4IN
TB1IN 31
TB2OUT 43
TB2IN 30
+5V
RA1OUT 10
RA2OUT 11
RA3OUT 12
RA4OUT 13
TA1IN 14
400kΩ
35 RB1OUT
34 RB2OUT
33 RB3OUT
32 RB4OUT
31 TB1IN
30 TB2IN
29 TB3IN
MAX248
+5V
+5V
TB3OUT 42
TB3IN 29
400kΩ
TA2IN 15
TA3IN 16
+5V
400kΩ
+5V
TA4IN 17
TB4OUT 41
TB4IN 28
18 19 20 21 22 23 24 25 26 27 28
8 RA1IN
RB1IN 37
PLCC
5kΩ
5kΩ
10 RA1OUT
7 RA2IN
RB1OUT 35
RB2IN 38
MAX248 FUNCTIONAL DESCRIPTION
8 RECEIVERS
4 A-SIDE RECEIVERS
5kΩ
5kΩ
4 B-SIDE RECEIVERS
8 TRANSMITTERS
11 RA2OUT
6 RA3IN
RB2OUT 34
RB3IN 39
4 A-SIDE TRANSMITTERS
4 B-SIDE TRANSMITTERS
4 CONTROL PINS
5kΩ
5kΩ
ENABLE RECEIVER A-SIDE (ENRA)
ENABLE RECEIVER B-SIDE (ENRB)
ENABLE RECEIVER A-SIDE (ENTA)
ENABLE RECEIVER B-SIDE (ENTB)
12 RA3OUT
5 RA4IN
RB3OUT 33
RB4IN 40
5kΩ
5kΩ
13 RA4OUT
9 ENRA
RB4OUT 32
ENRB 36
GND
19
µigure Xꢁꢂ ꢄMAXꢁ8 Pin Configuration and ꢅypical Operating Circuit
www.maximintegrated.com
Maxim Integrated | 33
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
+5V
TOP VIEW
1μF
1μF
20
21
C1+
C1-
V
22
CC
V+
V-
1μF
1μF
23
24
+5V TO +10V VOLTAGE DOUBLER
26
C2+
C2-
1μF
43
42 41 40
6
5
4
3
2
1
44
25
+10V TO -10V VOLTAGE INVERTER
18 ENTA
ENTB 27
+
+5V
+5V
+5V
1 TA1OUT
TB1OUT 44
RA2IN
RA1IN
ENRA
7
8
9
39 RB3IN
38 RB2IN
37 RB1IN
36 ENRB
400kΩ
15 TA1IN
2 TA2OUT
16 TA2IN
3 TA3OUT
TB1IN 30
TB2OUT 43
TB2IN 29
+5V
RA1OUT 10
RA2OUT 11
RA3OUT 12
RA4OUT 13
400kΩ
35 RB1OUT
34 RB2OUT
33 RB3OUT
32 RB4OUT
MAX249
+5V
+5V
400kΩ
TB3OUT 42
14
15
RA5OUT
TA1IN
31
RB5OUT
17 TA3IN
8 RA1IN
TB3IN 28
RB1IN 37
TA2IN 16
TA3IN 17
30 TB1IN
29 TB2IN
5kΩ
5kΩ
18 19 20 21 22 23 24 25 26 27 28
10 RA1OUT
7 RA2IN
RB1OUT 35
RB2IN 38
PLCC
5kΩ
5kΩ
11 RA2OUT
6 RA3IN
RB2OUT 34
RB3IN 39
MAX249 FUNCTIONAL DESCRIPTION
10 RECEIVERS
5 A-SIDE RECEIVERS
5kΩ
5kΩ
5 B-SIDE RECEIVERS
6 TRANSMITTERS
12 RA3OUT
5 RA4IN
RB3OUT 33
RB4IN 40
3 A-SIDE TRANSMITTERS
3 B-SIDE TRANSMITTERS
4 CONTROL PINS
5kΩ
5kΩ
ENABLE RECEIVER A-SIDE (ENRA)
ENABLE RECEIVER B-SIDE (ENRB)
ENABLE RECEIVER A-SIDE (ENTA)
ENABLE RECEIVER B-SIDE (ENTB)
13 RA4OUT
4 RA5IN
RB4OUT 32
RB5IN 41
5kΩ
5kΩ
14 RA5OUT
9 ENRA
RB5OUT 31
ENRB 36
GND
19
µigure X5ꢂ ꢄMAXꢁ9 Pin Configuration and ꢅypical Operating Circuit
www.maximintegrated.com
Maxim Integrated | 34
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
Ordering Information (continued)
PART
TEMP RANGE PIN-PACKAGE
PART
TEMP RANGE PIN-PACKAGE
MAX220CPE+ 0°C to +70°C 16 Plastic DIP
MAX220CSE+ 0°C to +70°C 16 Narrow SO
MAX220CWE+ 0°C to +70°C 16 Wide SO
MAX231EWE+ -40°C to +85°C 16 Wide SO
MAX231EJD
MAX231MJD
-40°C to +85°C 14 CERDIP
55°C to +125°C 14 CERDIP
MAX220C/D
0°C to +70°C Dice*
MAX232CPE+ 0°C to +70°C 16 Plastic DIP
MAX232CSE+ 0°C to +70°C 16 Narrow SO
MAX232CWE+ 0°C to +70°C 16 Wide SO
MAX220EPE+ -40°C to +85°C 16 Plastic DIP
MAX220ESE+ -40°C to +85°C 16 Narrow SO
MAX220EWE+ -40°C to +85°C 16 Wide SO
MAX232C/D
0°C to +70°C Dice*
MAX220EJE
MAX220MJE
-40°C to +85°C 16 CERDIP
55°C to +125°C 16 CERDIP
MAX232EPE+ -40°C to +85°C 16 Plastic DIP
MAX232ESE+ -40°C to +85°C 16 Narrow SO
MAX232EWE+ -40°C to +85°C 16 Wide SO
MAX222CPN+ 0°C to +70°C 18 Plastic DIP
MAX222CWN+ 0°C to +70°C 18 Wide SO
MAX232EJE
MAX232MJE
-40°C to +85°C 16 CERDIP
55°C to +125°C 16 CERDIP
MAX222C/D
0°C to +70°C Dice*
MAX222EPN+ -40°C to +85°C 18 Plastic DIP
MAX222EWN+ -40°C to +85°C 18 Wide SO
MAX232MLP+ 55°C to +125°C 20 LCC
MAX232ACPE+ 0°C to +70°C 16 Plastic DIP
MAX232ACSE+ 0°C to +70°C 16 Narrow SO
MAX232ACWE+ 0°C to +70°C 16 Wide SO
MAX222EJN
MAX222MJN
MAX223CAI+
MAX223CWI+
MAX223C/D
-40°C to +85°C 18 CERDIP
55°C to +125°C 18 CERDIP
0°C to +70°C 28 SSOP
0°C to +70°C 28 Wide SO
0°C to +70°C Dice*
MAX232AC/D
0°C to +70°C Dice*
MAX232AEPE+ -40°C to +85°C 16 Plastic DIP
MAX232AESE+ -40°C to +85°C 16 Narrow SO
MAX232AEWE+-40°C to +85°C 16 Wide SO
MAX232AEJE -40°C to +85°C 16 CERDIP
MAX232AMJE 55°C to +125°C 16 CERDIP
MAX232AMLP+ 55°C to +125°C 20 LCC
MAX223EAI+ -40°C to +85°C 28 SSOP
MAX223EWI+ -40°C to +85°C 28 Wide SO
MAX225CWI+ 0°C to +70°C 28 Wide SO
MAX225EWI+ -40°C to +85°C 28 Wide SO
MAX230CPP+ 0°C to +70°C 20 Plastic DIP1
MAX230CWP+ 0°C to +70°C 20 Wide SO
MAX233CPP+ 0°C to +70°C 20 Plastic DIP
MAX233EPP+ -40°C to +85°C 20 Plastic DIP
MAX233ACPP+ 0°C to +70°C 20 Plastic DIP
MAX233ACWP+ 0°C to +70°C 20 Wide SO
MAX233AEPP+ -40°C to +85°C 20 Plastic DIP
MAX233AEWP+-40°C to +85°C 20 Wide SO
MAX234CPE+ 0°C to +70°C 16 Plastic DIP
MAX234CWE+ 0°C to +70°C 16 Wide SO
MAX230C/D
0°C to +70°C Dice*
MAX230EPP+ -40°C to +85°C 20 Plastic DIP
MAX230EWP+ -40°C to +85°C 20 Wide SO
MAX230EJP
MAX230MJP
-40°C to +85°C 20 CERDIP
55°C to +125°C 20 CERDIP
MAX231CPD+ 0°C to +70°C 14 Plastic DIP
MAX231CWE+ 0°C to +70°C 16 Wide SO
MAX234C/D
0°C to +70°C Dice*
MAX231CJD
MAX231C/D
0°C to +70°C 14 CERDIP
0°C to +70°C Dice*
MAX234EPE+ -40°C to +85°C 16 Plastic DIP
+Denotes a lead(Pb)-free/RoHS-compliant packageꢂ
*Contact factory for dice specificationsꢂ
MAX231EPD+ -40°C to +85°C 14 Plastic DIP
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Maxim Integrated | 35
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
Ordering Information (continued)
PART
TEMP RANGE PIN-PACKAGE
PART
TEMP RANGE PIN-PACKAGE
MAX234EWE+ -40°C to +85°C 16 Wide SO
MAX240CMH+ 0°C to +70°C 44 Plastic FP
MAX234EJE
MAX234MJE
-40°C to +85°C 16 CERDIP
55°C to +125°C 16 CERDIP
MAX240C/D
MAX241CAI+
MAX241CWI+
MAX241C/D
0°C to +70°C Dice*
0°C to +70°C 28 SSOP
0°C to +70°C 28 Wide SO
0°C to +70°C Dice*
MAX235CPG+ 0°C to +70°C 24 Wide Plastic DIP
MAX235EPG+ -40°C to +85°C 24 Wide Plastic DIP
MAX235EDG
-40°C to +85°C 24 Ceramic SB
MAX241EAI+ -40°C to +85°C 28 SSOP
MAX241EWI+ -40°C to +85°C 28 Wide SO
MAX242CAP+ 0°C to +70°C 20 SSOP
MAX242CPN+ 0°C to +70°C 18 Plastic DIP
MAX242CWN+ 0°C to +70°C 18 Wide SO
MAX235MDG 55°C to +125°C 24 Ceramic SB
MAX236CNG+ 0°C to +70°C 24 Narrow Plastic DIP
MAX236CWG+ 0°C to +70°C 24 Wide SO
MAX236C/D
0°C to +70°C Dice*
MAX236ENG+ -40°C to +85°C 24 Narrow Plastic DIP
MAX236EWG+ -40°C to +85°C 24 Wide SO
MAX242C/D
0°C to +70°C Dice*
MAX242EPN+ -40°C to +85°C 18 Plastic DIP
MAX242EWN+ -40°C to +85°C 18 Wide SO
MAX236ERG
-40°C to +85°C 24 Narrow CERDIP
MAX236MRG 55°C to +125°C 24 Narrow CERDIP
MAX237CNG+ 0°C to +70°C 24 Narrow Plastic DIP
MAX237CWG+ 0°C to +70°C 24 Wide SO
MAX242EJN
MAX242MJN
-40°C to +85°C 18 CERDIP
55°C to +125°C 18 CERDIP
MAX243CPE+ 0°C to +70°C 16 Plastic DIP
MAX243CSE+ 0°C to +70°C 16 Narrow SO
MAX243CWE+ 0°C to +70°C 16 Wide SO
MAX237C/D
0°C to +70°C Dice*
MAX237ENG+ -40°C to +85°C 24 Narrow Plastic DIP
MAX237EWG+ -40°C to +85°C 24 Wide SO
MAX243C/D
0°C to +70°C Dice*
MAX237ERG
-40°C to +85°C 24 Narrow CERDIP
MAX243EPE+ -40°C to +85°C 16 Plastic DIP
MAX243ESE+ -40°C to +85°C 16 Narrow SO
MAX243EWE+ -40°C to +85°C 16 Wide SO
MAX237MRG 55°C to +125°C 24 Narrow CERDIP
MAX238CNG+ 0°C to +70°C 24 Narrow Plastic DIP
MAX238CWG+ 0°C to +70°C 24 Wide SO
MAX243EJE
MAX243MJE
-40°C to +85°C 16 CERDIP
55°C to +125°C 16 CERDIP
MAX238C/D
0°C to +70°C Dice*
MAX238ENG+ -40°C to +85°C 24 Narrow Plastic DIP
MAX238EWG+ -40°C to +85°C 24 Wide SO
MAX244CQH+ 0°C to +70°C 44 PLCC
MAX244C/D 0°C to +70°C Dice*
MAX238ERG
-40°C to +85°C 24 Narrow CERDIP
MAX244EQH+ -40°C to +85°C 44 PLCC
MAX238MRG 55°C to +125°C 24 Narrow CERDIP
MAX239CNG+ 0°C to +70°C 24 Narrow Plastic DIP
MAX239CWG+ 0°C to +70°C 24 Wide SO
MAX245CPL+ 0°C to +70°C 40 Plastic DIP
MAX245C/D
0°C to +70°C Dice*
MAX245EPL+ -40°C to +85°C 40 Plastic DIP
MAX239C/D
0°C to +70°C Dice*
MAX246CPL+ 0°C to +70°C 40 Plastic DIP
MAX239ENG+ -40°C to +85°C 24 Narrow Plastic DIP
MAX239EWG+ -40°C to +85°C 24 Wide SO
MAX246C/D
0°C to +70°C Dice*
MAX246EPL+ -40°C to +85°C 40 Plastic DIP
+Denotes a lead(Pb)-free/RoHS-compliant packageꢂ
*Contact factory for dice specificationsꢂ
MAX239ERG
-40°C to +85°C 24 Narrow CERDIP
MAX239MRG 55°C to +125°C 24 Narrow CERDIP
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Maxim Integrated | 36
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
Ordering Information (continued)
PART
MAX247CPL+ 0°C to +70°C 40 Plastic DIP
MAX247C/D 0°C to +70°C Dice*
TEMP RANGE PIN-PACKAGE
MAX247EPL+ -40°C to +85°C 40 Plastic DIP
MAX248CQH+ 0°C to +70°C 44 PLCC
MAX248C/D
0°C to +70°C Dice*
MAX248EQH+ -40°C to +85°C 44 PLCC
MAX249CQH+ 0°C to +70°C 44 PLCC
MAX249EQH+ -40°C to +85°C 44 PLCC
+Denotes a lead(Pb)-free/RoHS-compliant packageꢂ
*Contact factory for dice specificationsꢂ
Selection Table
No. of
SHDN
&
Three- in
State SHDN
Rx
Active
Power
Supply
(V)
No. of
Ext.
Caps
Nominal
Cap. Value
(+F)
Data
Part
Number
RS-232
Drivers
/Rx
Rate
Features
(kbps)
MAX220
MAX222
MAX223
MAX225
MAX230
MAX231
+5
+5
+5
+5
2/2
2/2
4/5
5/5
5/0
2/2
4
4
4
0
4
2
0.047, 0.33 No
No
No
Yes
Yes
No
120
200
120
120
120
120
Ultra-low-power, industry-standard pinout
Low-power shutdown
MAX241 and receivers active in shutdown
Available in SO
5 drivers with shutdown
Standard +5/+12V or battery supplies;
same functions as MAX232
0.1
1.0, 0.1
—
1.0, 0.1
1.0, 0.1
Yes
Yes
Yes
Yes
No
+5
+5 and
+7.5 to
+5
No
MAX232
2/2
2/2
2/2
2/2
4/0
5/5
4/3
5/3
4/4
3/5
4
4
0
0
4
0
4
4
4
2
1.0, 0.1
0.1
—
—
1.0, 0.1
—
1.0, 0.1
1.0, 0.1
1.0, 0.1
1.0, 0.1
No
No
No
No
No
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
120 (64) Industry standard
MAX232A +5
MAX233 +5
MAX233A +5
MAX234
MAX235
MAX236
MAX237
MAX238
MAX239
200
120
200
120
120
120
120
120
120
Higher slew rate, small caps
No external caps
No external caps, high slew rate
Replaces 1488
No external caps
Shutdown, three state
Complements IBM PC serial port
Replaces 1488 and 1489
Standard +5/+12V or battery supplies;
single-package solution for IBM PC serial
DIP or flatpack package
Complete IBM PC serial port
Separate shutdown and enable
Open-line detection simplifies cabling
High slew rate
+5
+5
+5
+5
+5
+5 and
+7.5 to
+5
+5
+5
+5
+5
+5
+5
MAX240
MAX241
MAX242
MAX243
MAX244
MAX245
MAX246
MAX247
MAX248
MAX249
5/5
4/5
2/2
2/2
8/10
8/10
8/10
8/9
8/8
6/10
4
4
4
4
4
0
0
0
4
4
1.0
1.0, 0.1
0.1
0.1
1.0
—
—
—
1.0
1.0
Yes
Yes
Yes
No
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
120
120
200
200
120
120
120
120
120
120
No
High slew rate, int. caps, two shutdown
High slew rate, int. caps, three shutdown
High slew rate, int. caps, nine operating
High slew rate, selective half-chip enables
Available in quad flatpack package
Yes
Yes
Yes
Yes
Yes
+5
+5
+5
www.maximintegrated.com
Maxim Integrated | 37
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
Package Information
µor the latest package outline information and land patterns (footprints)% go to www.maximintegrated.com/packagesꢂ Note that a “+”% “#”% or
“-” in the package code indicates RoHS status onlyꢂ Package drawings may show a different suffix character% but the drawing pertains to the
package regardless of RoHS statusꢂ
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND
PATTERN NO.
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND
PATTERN NO.
±ꢁ PDIP
±6 PDIP
P±ꢁ+.
P±6+±
P±6+X
P±6+.
P±8+5
PX1+.
PX1ꢄ+±
NXꢁ+.
PXꢁꢄ+±
PX8+X
Pꢁ1+±
Pꢁ1ꢄ+X
J±ꢁ-.
±6 SO(W)
±6 SO(W)
±6 SO(W)
±8 SO(W)
X1 SO(W)
X1 SO(W)
Xꢁ SO(W)
X8 SO(W)
X8 SO(W)
X8 SO(W)
X1 LCC
W±6+±
W±6+X
W±6+.
W±8+±
WX1+.
WX1ꢄ+±
WXꢁ+X
WX8+±
WX8+X
WX8ꢄ+±
LX1+.
90-0107
±6 PDIP
±6 PDIP
90-0181
90-0108
90-0182
21-0043
21-0044
±8 PDIP
21-0042
X1 PDIP
X1 PDIP
Xꢁ PDIP
Xꢁ PDIP
—
90-0109
X8 PDIP
ꢁ1 PDIP
21-0658
21-0056
90-0177
90-0094
90-0110
90-0095
90-0117
—
ꢁ1 PDIP
X1 SSOP
Xꢁ SSOP
X8 SSOP
±6 ꢅSSOP
±6 µPCK
ꢁꢁ ꢄQµP
ꢁꢁ PLCC
ꢁꢁ PLCC
MX1+±
MXꢁ+X
MX8+±
U±6+±
µ±6-.
±ꢁ CERDIP
±6 CERDIP
±8 CERDIP
X1 CERDIP
Xꢁ CERDIP
±6 SO(N)
±6 SO(N)
J±6-.
J±8-X
21-0045
21-0041
JX1-X
21-0013
21-0826
RXꢁ-ꢁ
ꢄꢁꢁ+5
Qꢁꢁ+±
Qꢁꢁ+X
90-0169
S±6+.
S±6+5
90-0097
21-0049
90-0236
www.maximintegrated.com
Maxim Integrated | 38
+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
Revision History
REVISION REVISION
PAGES
DESCRIPTION
NUMBER
DATE
CHANGED
Mdded part information to the lead temperature in the Absolute Maximum Ratings
sections
±5
±/16
X% 5% 8
Changed multiple packages to lead-free versionsꢆ updated/added notes .% ꢁ% 5% 4% and
8 to the Electrical Characteristics tableꢆ removed incorrect subscripting from all pin
names in the Electrical Characteristics table and Pin Configurations
±6
±4
4/±1
±/±5
±% Xꢀ9% ±4ꢀ.6
±
Updated General Description and Benefits and Features sections
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
ꢄaxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a ꢄaxim Integrated productꢂ No circuit patent
licenses are impliedꢂ ꢄaxim Integrated reserves the right to change the circuitry and specifications without notice at any timeꢂ ꢅhe parametric values (min and
max limits) shown in the Electrical Characteristics table are guaranteedꢂ Other parametric values quoted in this data sheet are provided for guidanceꢂ
ꢄaxim Integrated and the ꢄaxim Integrated logo are trademarks of ꢄaxim Integrated Products% Incꢂ
© X1±5 ꢄaxim Integrated Products% Incꢂ | 39
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