LT1039A [Linear]
Triple RS232 Driver/Receiver with Shutdown; 三重RS232驱动器/接收器,带有关断型号: | LT1039A |
厂家: | Linear |
描述: | Triple RS232 Driver/Receiver with Shutdown |
文件: | 总12页 (文件大小:276K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
LT1039A/LT1039A-16
Triple RS232 Driver/Receiver
with Shutdown
U
FEATURES
DESCRIPTION
The LT®1039A is a triple RS232 driver/receiver that
includes shutdown. Each receiver will accept up to ±30V
input and can drive either TTL or CMOS logic. The RS232
driversacceptTTLlogicinputsandoutputRS232voltage
levels. The outputs are fully protected against overload
and can be shorted to ground or up to ±30V without
damage to the drivers. Additionally, when the system is
shut down or power is off, the outputs are in a high
impedance state allowing data line sharing. On-chip ESD
protection eliminates the need for external protection
devices.
■
On-Chip ESD Protection:
±15kV Human Body Model
±15kV IEC-1000-4-2 Air Gap Test**
±8kV IEC-1000-4-2 Contact Test
■
125kBd Operation with 3kΩ/2500pF Load
■
250kBd Operation with 3kΩ/1000pF Load
■
Operates from ±5V to ±15V Supplies
■
Fully Protected Against Overload
■
Outputs Can Be Driven ±30V Without Damage
■
Three-State Outputs; Outputs Open When Off
■
Bipolar Circuit—No Latchup
±30V Input Range
Triple Driver/Receiver
■
A bias pin allows one receiver to be kept on while the rest
of the part is shut down.
■
■
No Supply Current in Shutdown
The LT1039A is also available in the 16-pin version,
without shutdown or bias pin functions.
■
30kΩ Input Impedance
■
Meets All RS232 Specifications
For applications requiring operation from a single 5V
supply, see the LT1180A/LT1181A and LT1130A data
sheets.
■
16-Pin Version—Pin Compatible with MC145406
Available in SO Package
■
, LTC and LT are registered trademarks of Linear Technology Corporation.
U
APPLICATIONS
■
RS232 Interface
Terminals
■
■
Modems
U
TYPICAL APPLICATION
1
2
3
18
17
16
+
12V
BIAS*
5V
V
V
CC
Driver Output Swing
LT1039A
30k
ON/OFF
LOGIC
+
V
RS232 IN
–0.4
–0.8
–1.2
–1.6
–2.0
50Ω**
4
5
15
14
RS232 OUT
RS232 OUT
RS232 OUT
LOGIC
LOGIC
RS232 IN
30k
30k
*BIAS PIN USED
TO KEEP THE
50Ω**
6
7
13
12
LOGIC
LOGIC
RECEIVER ON
1.2
0.8
0.4
WHILE IN SHUTDOWN
RS232 IN
**50Ω RESISTORS
MAY BE REQUIRED
FOR IEC-1000-4-2
ESD PROTECTION
DEPENDING UPON
PC BOARD AND
50Ω**
8
9
11
10
LOGIC
–
V
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
OUTPUT CURRENT (mA)
1039A TA02
–
V
GND
–12V
1039A TA01
CONNECTOR LEAD LENGTH
1
LT1039A/LT1039A-16
W W U W
ABSOLUTE MAXIMUM RATINGS
Supply Voltage
Short-Circuit Duration ..................................... Indefinite
Operating Temperature Range
LT1039AC................................................ 0°C to 70°C
LT1039AI........................................... –40°C to 85°C
LT1039AM....................................... –55°C to 125°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
Driver (V+, V–) ................................................. ±16V
Receiver (VCC) ...................................................... 7V
Logic Inputs .................................................. V– to 25V
Receiver Inputs..................................................... ±30V
ON/OFF Input .............................................. GND to 12V
Driver Outputs ............................. V– + 30V to V+ – 30V
U
W U
PACKAGE/ORDER INFORMATION
ORDER PART
ORDER PART
TOP VIEW
TOP VIEW
NUMBER
NUMBER
+
1
2
3
4
5
6
7
8
9
V
CC
18
17
16
15
14
13
12
11
10
V
BIAS
+
1
2
3
4
5
6
7
8
V
CC
16
15
14
13
12
11
10
9
V
ON/OFF
REC1 OUT
TR1 IN
LT1039ACN16
LT1039ACSW16
LT1039AIN16
LT1039AISW16
LT1039AMJ16
LT1039ACN
LT1039ACSW
LT1039AIN
LT1039AISW
LT1039AMJ
REC1 OUT
TR1 IN
REC1 IN
TR1 OUT
REC2 IN
TR2 OUT
REC3 IN
TR3 OUT
REC1 IN
TR1 OUT
REC2 IN
TR2 OUT
REC3 IN
TR3 OUT
REC2 OUT
TR2 IN
REC2 OUT
TR2 IN
REC3 OUT
TR3 IN
REC3 OUT
TR3 IN
–
GND
V
–
GND
V
Consult Factory
for Availability
J PACKAGE
N PACKAGE
N PACKAGE
18-LEAD PDIP
J PACKAGE
16-LEAD CERDIP
16-LEAD PDIP
18-LEAD CERDIP
SW PACKAGE
16-LEAD PLASTIC SO WIDE
SW PACKAGE
18-LEAD PLASTIC SO WIDE
TJMAX = 150°C, θJA = 105°C/ W, θJC = 30°C/ W (J)
TJMAX = 125°C, θJA = 90°C/ W, θJC = 50°C/ W (N)
JMAX = 125°C, θJA = 95°C/ W, θJC = 27°C/ W (SW)
TJMAX = 150°C, θJA = 88°C/ W, θJC = 22°C/ W (J)
T
JMAX = 125°C, θJA = 79°C/ W, θJC = 36°C/ W (N)
T
TJMAX = 125°C, θJA = 90°C/ W, θJC = 26°C/ W (SW)
ELECTRICAL CHARACTERISTICS
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
+
–
Driver V = 12V, V = –12V, V
= 2.5V (Note 1)
ON/OFF
Output Voltage Swing
Load = 3k to Ground
Positive
Negative
+
+
●
●
V – 2.0
V – 1.3
V
V
–
–
V + 1.5
V + 1.0
Logic Input Voltage Levels
Logic Input Current
Input Low Level (V
Input High Level (V
= High)
= Low)
●
●
1.4
1.4
0.8
V
V
OUT
2.0
OUT
V
IN
V
IN
≥ 2.0V
≤ 0.8V
1
5
20
20
µA
µA
Output Short-Circuit Current
Sourcing Current, V
= 0V
= 0V
20
–15
30
–30
mA
mA
OUT
Sinking Current, V
OUT
Output Leakage Current
Supply Leakage Current
Slew Rate
Shutdown (Notes 2, 3), V
Shutdown (Note 2)
= ±18V, V = 0V
●
●
10
1
200
100
30
µA
µA
OUT
IN
R = 3k, C = 51pF to 2500pF
4
15
1
V/µs
mA
L
L
Supply Current
V
OUT
= Low
5
2
LT1039A/LT1039A-16
ELECTRICAL CHARACTERISTICS
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Prop Delay (t
(t
)
)
0.6
0.8
1.2
1.2
µs
µs
PLH
PHL
Receiver V = 5V, V
= 2.5V (Note 1)
ON/OFF
CC
Input Voltage Thresholds
Input Low Level (V
Input High Level (V
= High)
= Low)
●
●
0.5
0.1
1.3
1.7
V
V
OUT
2.8
1.0
OUT
Hysteresis
●
●
0.4
30
V
Input Resistance
Output Voltage
kΩ
Output Low, I
Output High, I
= –1.6mA
= 160µA
●
●
0.4
4.8
0.5
V
V
OUT
3.5
OUT
Output Short-Circuit Current
Sourcing Current, V
= V
= 0V
●
●
–10
15
– 30
25
mA
mA
OUT
CC
Sinking Current, V
OUT
Output Leakage Current
Supply Current
Shutdown (Note 1), 0V ≤ V
(Note 4)
≤ V , V = 0V
●
●
●
●
1
2
1
10
5
µA
mA
µA
OUT
CC IN
Supply Leakage Current
ON/OFF Pin Current
Shutdown (Note 2)
100
80
0V ≤ V
≤ 5V
–15
µA
ON/OFF
Prop Delay (t
(t
)
)
200
300
600
600
ns
ns
PLH
PHL
The
●
denotes specifications which apply over the full operating
Note 3: For T ≥ 100°C leakage current is 350µA max.
A
temperature range.
Note 4: Bias pin open on 18-pin version.
Note 1: V
Note 2: V
= 5V for LT1039AM grade devices.
ON/OFF
ON/OFF
= 0.4V for –55°C ≤ T ≤ 100°C and V
= 0.2V for
ON/OFF
A
100°C ≤ T ≤ 125°C. Does not apply to LT1039A-16 part.
A
W
U
TYPICAL PERFORMANCE CHARACTERISTICS
Driver Output Short-Circuit Current
Receiver Input Thresholds
ON/OFF Pin Thresholds
50
45
40
35
30
25
20
15
10
5
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
SINKING
INPUT HIGH
INPUT LOW
SOURCING
MINIMUM ON VOLTAGE
MINIMUM OFF VOLTAGE
0
–55
0
25
50
75 100 125
–55
0
25
50
75 100 125
–55
–25
0
25
50
75 100 125
–25
–25
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
1039A G01
1039A G02
1039A G03
3
LT1039A/LT1039A-16
W
U
TYPICAL PERFORMANCE CHARACTERISTICS
Driver Output Leakage
in Shutdown
Receiver Output
Short-Circuit Current
Supply Current in Shutdown
60
55
50
45
40
35
30
25
20
15
10
5
1000
100
1000
100
SUPPLY CURRENT MEASURED
+
INTO V AND V
CC
SINKING
SOURCING
V
OUT
–30V
10
10
1
V
OUT
30V
1
0
–55 –25
0
25
50
75 100 125
–55
–25
0
25
50
75 100 125
–55 –25
0
25
50
75 100 125
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
1039A G04
1039A G06
1039A G05
ON/OFF Pin Current vs Voltage
Driver Output Swing vs Current
+
40
35
30
25
20
15
10
5
V
–0.4
–0.8
–1.2
–1.6
–2.0
1.2
0.8
0.4
0
–5
–10
–
V
0
1
2
3
4
5
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
OUTPUT CURRENT (mA)
1039A TA02
INPUT VOLTAGE (V)
1039A G07
Output Waveforms
Shutdown to Driver Output
10V
5V
5V
0V
10V
RECEIVER
OUTPUT
OUTPUT
HIGH
DRIVER
OUTPUT
0V
DRIVER
OUTPUT
0V
0V
OUTPUT
LOW
–10V
5V
0V
DRIVER
OUTPUT
–5V
INPUT
–10V
5V
ON/OFF
INPUT
1039A G09
V+ = 12V
2µs/DIV
V
V
– = –12V
CC = 5V
0V
1039A G10
V
+ = 12V
2µs/DIV
V– = –12V
RL = 3k
R
L = 3k
DRIVER OUTPUT CONNECTED TO RECEIVER INPUT
4
LT1039A/LT1039A-16
W
U
TYPICAL PERFORMANCE CHARACTERISTICS
Shutdown to Receiver Output
BIAS Pin Response Time
6V
4V
2V
0V
6V
4V
2V
0V
RECEIVER
OUTPUT
RECEIVER 1
OUTPUT
5V
0V
5V
0V
ON/OFF
INPUT
BIAS INPUT
(THRU 25kΩ)
1039A G11
1039A G12
VCC = 5V
2ms/DIV
VCC = 5V
0.2µs/DIV
U
U
U
PIN FUNCTIONS
(Pin numbers listed are for 18-pin device)
V+, V– (Pins 1, 9): Driver Supply Pins. Supply current
drops to zero in shutdown mode. Driver outputs are in a
high impedance state when V+ and V– = 0V.
output pins are internally protected from ESD transients.
In order to insure proper functioning of the ESD protec-
tion devices, the V+ and V– supply pins must be
bypassed with low ESR capacitors located close to the
pins. 0.1µF ceramic capacitors work well.
BIAS (Pin 2): Keeps receiver 1 on while the LT1309A is in
theshutdownmode. LeaveBIASpinopenwhennotinuse.
See Applications Information for proper use.
GND (Pin 10): Ground Pin.
RECIN(Pins3, 5, 7):ReceiverInputPins. AcceptsRS232
voltage levels (±30V) and has 0.4V of hysteresis to pro-
vide noise immunity. Input impedance is nominally 30kΩ.
Receiver input pins are internally protected from ESD
transients.InordertoinsureproperfunctioningoftheESD
protection devices, the VCC and V– supply pins must be
bypassed with low ESR capacitors located close to the
pins. A 0.1µF ceramic capacitor works well.
TR IN (Pins 11, 13, 15): RS232 Driver Input Pins. Inputs
are TTL/CMOS compatible. Inputs should not be allowed
to float. Tie unused inputs to VCC.
REC OUT (Pins 12, 14, 16): Receiver Outputs with TTL/
CMOS Voltage Levels. Outputs are in a high impedance
state when in the shutdown mode to allow data line
sharing.Outputsarefullyshort-circuitprotectedtoground
or VCC with power on, off or in the shutdown mode.
TR OUT (Pins 4, 6, 8): Driver Outputs with RS232 Voltage
Levels. Outputs are in a high impedance state when in the
shutdown mode or when power is off (V+ and V– = 0V) to
allow data line sharing. Outputs are fully short-circuit
protected from V– + 30V to V+ – 30V with power on, off or
in the shutdown mode. Typical output breakdowns are
greater than ±45V and higher applied voltages will not
damage the device if moderately current limited. Driver
ON/OFF (Pin 17): Controls the operation mode of the
LT1039A and is TTL/CMOS compatible. A logic low puts
the device in the shutdown mode which reduces input
supply current to zero and places both driver and receiver
outputs in a high impedance state.
VCC (Pin 18): 5V Power for Receivers.
5
LT1039A/LT1039A-16
U
W U U
APPLICATIONS INFORMATION
The driver output stage of the LT1039A offers signifi-
cantly improved protection over older bipolar and CMOS
designs. In addition to current limiting, the driver output
can be externally forced to ±30V with no damage or
excessive current flow.
Sharing a Receiver Line
RS232
INPUT A
LT1039A #1
RECEIVER
LT1039A Driver
RS232
INPUT B
LOGIC
OUTPUT
LT1039A #2
RECEIVER
30V
LT1039A
OUTPUT CAN
BE FORCED
EXTERNALLY
–30V
LOGIC
INVERTER
1039A AI01
ON/OFF
(CHANNEL SELECT)
INPUT
1039A AI04
The driver outputs utilize high impedance overvoltage
protection, eliminating the flow of fault currents into
supplies, as will happen with conventional diode clamp
configurations.
Transceiver
Older RS232 Drivers and Other CMOS Drivers
LOGIC
TRANSMIT/RECEIVE
LINE
RS232
TRANSMIT/RECEIVE
LINE
LT1039A #1
DRIVER
+
V
WITH SOME DRIVERS,
EXTERNALLY APPLIED
VOLTAGE CAN FORCE
THE SUPPLIES
LT1039A #2
RECEIVER
–
V
1039A AI02
LOGIC
INVERTER
Placing the LT1039A in the shutdown mode (Pin 17 low)
puts both the driver and receiver outputs in a high imped-
ance state. This allows data line sharing and transceiver
applications.
ON/OFF
(TRANSMIT/RECEIVE)
INPUT
1039A AI05
The shutdown mode also drops all supply currents (VCC,
V+, V–) to zero for power conscious systems.
Sharing a Transmitter Line
LOGIC
INPUT A
LT1039A #1
DRIVER
RS232
TRANSMISSION
LINE
LOGIC
INPUT B
LT1039A #2
DRIVER
LOGIC
INVERTER
ON/OFF
(CHANNEL SELECT)
INPUT
1039A AI03
6
LT1039A/LT1039A-16
U
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APPLICATIONS INFORMATION
When driving CMOS logic from a receiver that will be used
in the shutdown mode and there is no other active receiver
ontheline,a51kresistorcanbeplacedfromthelogicinput
to VCC to force a definite logic level when the receiver
output is in a high impedance state.
Driver inputs should not be allowed to float. Any unused
inputs should be tied to VCC.
The BIAS pin is used to “keep alive” one receiver while in
the shutdown mode (all other circuitry being inactive).
This allows a system to be in shutdown and still have one
active receiver for transferring data.
Driving CMOS Logic from a Receiver
V
Keeping Alive One Receiver While in Shutdown
CC
LOGIC
SHUTDOWN
INPUT
CMOS
51k*
LOGIC
LOGIC
OUTPUT
RS232
INPUT
LT1039A
RECEIVER
25k
*FORCES LOGIC INPUT STATE
WHEN V IS LOW
ON/OFF
INPUT
ON/OFF
17
16
2
3
BIAS
1039A AI06
ON/OFF
RS232
INPUT
LOGIC
OUTPUT
To protect against receiver input overloads in excess of
±30V, a voltage clamp can be placed on the data line and
still maintain RS232 compatibility.
LT1039A
1039A AI07
Input Overvoltage Protection
It can also be used to make an RS232 compatible shut-
down control line. Driving the BIAS pin low through a
resistance of 24k to 30k keeps the receiver active. Do not
drive the BIAS pin directly from a logic output without the
series resistor. An unused BIAS pin should be left open.
1k
RECEIVER
RS232
INPUT
LOGIC
OUTPUT
30k
30V
30V
5.6k
RS232 Compatible Shutdown Control Line
1039A AI07
25k
The receiver input impedance of the LT1039A is nominally
30kΩ. For applications requiring a 5kΩ input impedance,
a 5.6k resistor can be connected from the receiver input to
ground.
17
16
2
3
BIAS
ON/OFF
RS232
SHUTDOWN
INPUT
LT1039A
5kΩ Impedance Matching
1039A AI08
RECEIVER
RS232
INPUT
LOGIC
OUTPUT
30k
5.6k
1039A AI08
7
LT1039A/LT1039A-16
U
PACKAGE DESCRIPTION Dimensions in inches (millimeters) unless otherwise noted.
J Package
16-Lead CERDIP (Narrow 0.300, Hermetic)
(LTC DWG # 05-08-1110)
0.840
(21.336)
CORNER LEADS OPTION
(4 PLCS)
0.005
(0.127)
MIN
MAX
16
10
15
14
12
11
9
8
13
0.023 – 0.045
(0.584 – 1.143)
HALF LEAD
OPTION
0.220 – 0.310
(5.588 – 7.874)
0.025
(0.635)
RAD TYP
0.045 – 0.068
(1.143 – 1.727)
FULL LEAD
OPTION
2
3
5
1
4
6
7
0.200
(5.080)
MAX
0.300 BSC
(0.762 BSC)
0.015 – 0.060
(0.380 – 1.520)
0.008 – 0.018
(0.203 – 0.457)
0° – 15°
0.385 ± 0.025
(9.779 ± 0.635)
0.045 – 0.068
(1.143 – 1.727)
0.100 ± 0.010
(2.540 ± 0.254)
0.125
(3.175)
MIN
0.014 – 0.026
(0.360 – 0.660)
NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS.
J16 0996
J Package
18-Lead CERDIP (Narrow 0.300, Hermetic)
(LTC DWG # 05-08-1110)
0.960
(24.384)
MAX
CORNER LEADS OPTION
(4 PLCS)
0.005
(0.127)
MIN
17
16
18
15
14
11
13
12
10
0.023 – 0.045
(0.584 – 1.143)
HALF LEAD
OPTION
0.220 – 0.310
(5.590 – 7.870)
0.025
(0.635)
RAD TYP
0.045 – 0.068
(1.143 – 1.727)
FULL LEAD
OPTION
3
1
2
4
5
6
7
8
9
0.200
(5.080)
MAX
0.300 BSC
(0.762 BSC)
0.015 – 0.060
(0.380 – 1.520)
0.008 – 0.018
(0.203 – 0.457)
0° – 15°
0.385 ± 0.025
(9.779 ± 0.635)
0.045 – 0.068
(1.143 – 1.727)
0.100 ± 0.010
(2.540 ± 0.254)
0.125
(3.175)
MIN
0.014 – 0.026
(0.360 – 0.660)
NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS.
J18 0694
8
LT1039A/LT1039A-16
U
PACKAGE DESCRIPTION
Dimensions in inches (millimeters) unless otherwise noted.
N Package
16-Lead PDIP (Narrow 0.300)
(LTC DWG # 05-08-1510)
0.770*
(19.558)
MAX
14
12
10
9
8
15
13
11
16
0.255 ± 0.015*
(6.477 ± 0.381)
2
1
3
4
6
5
7
0.300 – 0.325
0.130 ± 0.005
0.045 – 0.065
(7.620 – 8.255)
(3.302 ± 0.127)
(1.143 – 1.651)
0.015
(0.381)
MIN
0.065
(1.651)
TYP
0.009 – 0.015
(0.229 – 0.381)
+0.025
0.325
0.005
(0.127)
MIN
0.100 ± 0.010
(2.540 ± 0.254)
–0.015
0.125
(3.175)
MIN
0.018 ± 0.003
+0.635
8.255
(0.457 ± 0.076)
(
)
–0.381
N16 0695
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
N Package
18-Lead PDIP (Narrow 0.300)
(LTC DWG # 05-08-1510)
0.900*
(22.860)
MAX
18
17
16
15
14
13
12
11
10
0.255 ± 0.015*
(6.477 ± 0.381)
1
2
3
5
6
9
4
7
8
0.300 – 0.325
(7.620 – 8.255)
0.130 ± 0.005
(3.302 ± 0.127)
0.045 – 0.065
(1.143 – 1.651)
0.015
(0.381)
MIN
0.065
(1.651)
TYP
0.009 – 0.015
(0.229 – 0.381)
+0.025
0.325
0.005
(0.127)
MIN
0.100 ± 0.010
(2.540 ± 0.254)
–0.015
0.125
(3.175)
MIN
0.018 ± 0.003
+0.635
8.255
(0.457 ± 0.076)
(
)
–0.381
N18 0695
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
9
LT1039A/LT1039A-16
U
PACKAGE DESCRIPTION Dimensions in inches (millimeters) unless otherwise noted.
SW Package
16-Lead Plastic Small Outline (Wide 0.300)
(LTC DWG # 05-08-1620)
0.398 – 0.413*
(10.109 – 10.490)
15 14
12
10
11
9
16
13
0.394 – 0.419
(10.007 – 10.643)
NOTE 1
0.291 – 0.299**
(7.391 – 7.595)
2
3
5
7
8
1
4
6
0.037 – 0.045
(0.940 – 1.143)
0.093 – 0.104
(2.362 – 2.642)
0.010 – 0.029
(0.254 – 0.737)
× 45°
0° – 8° TYP
0.050
(1.270)
TYP
0.004 – 0.012
(0.102 – 0.305)
S16 (WIDE) 0396
0.009 – 0.013
NOTE 1
(0.229 – 0.330)
0.014 – 0.019
0.016 – 0.050
(0.356 – 0.482)
TYP
(0.406 – 1.270)
NOTE:
1. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS.
THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
10
LT1039A/LT1039A-16
U
PACKAGE DESCRIPTION Dimensions in inches (millimeters) unless otherwise noted.
SW Package
18-Lead Plastic Small Outline (Wide 0.300)
(LTC DWG # 05-08-1620)
0.447 – 0.463*
(11.354 – 11.760)
14 13
11
15
12
10
18 17 16
0.394 – 0.419
(10.007 – 10.643)
SEE NOTE
0.291 – 0.299**
(7.391 – 7.595)
2
3
5
7
8
9
1
4
6
0.037 – 0.045
(0.940 – 1.143)
0.093 – 0.104
(2.362 – 2.642)
0.010 – 0.029
(0.254 – 0.737)
× 45°
0° – 8° TYP
0.050
(1.270)
TYP
0.004 – 0.012
0.009 – 0.013
(0.102 – 0.305)
NOTE 1
(0.229 – 0.330)
0.014 – 0.019
0.016 – 0.050
(0.356 – 0.482)
TYP
(0.406 – 1.270)
NOTE:
S18 (WIDE) 0396
1. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS.
THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.
11
LT1039A/LT1039A-16
U
TYPICAL APPLICATION
LT1180A (Driver/Receiver with Power Supply) Driving an LT1039A
SHUTDOWN
5V
18
17
18
17
ON/OFF
LT1180A
V
V
CC
ON/OFF
LT1039A
CC
TTL IN
TTL IN
TTL IN
RS232 OUT
RS232 OUT
RS232 OUT
RS232 OUT
TTL IN
RS232 OUT
RS232 IN
TTL IN
RS232 IN
RS232 IN
TTL OUT
TTL OUT
5k
5k
30k
30k
TTL OUT
TTL OUT
TTL OUT
RS232 IN
RS232 IN
2
+
C1
+
0.1µF
4
5
–
+
C1
C2
+
3
7
1
9
+
+
–
30k
V
V
V
0.1µF
6
–
–
C2
GND
16
V
GND
10
+
+
0.1µF
0.1µF
1039A TA03
RELATED PARTS
PART NUMBER
LTC®485
DESCRIPTION
COMMENTS
Industry Standard
±15kV ESD Protection
Industry Standard, 0.1µF Capacitors
Low Power RS485 Transceiver
LT1137A
5V 3 Driver/5 Receiver RS232 Transceiver
5V 2 Driver/2 Receiver RS232 Transceiver
V.35 Transceiver
LT1180A/81A
LTC1345
Single 5V Supply Using 0.1µF Capacitors
LTC1348
3.3V 3 Driver/5 Receiver RS232 Transceiver
Operates from 3.3V to 5V Supplies, 5 Receivers Active in Shutdown
1039af LT/TP 0697 2K • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 1997
12 Linear Technology Corporation
●
1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408)432-1900
●
●
FAX: (408) 434-0507 TELEX: 499-3977 www.linear-tech.com
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