LT1341CSW [Linear]
5V RS232 Transceiver with One Receiver Active in Shutdown; 5V RS232收发器，一个接收器活跃在关机
| 型号： | LT1341CSW |
| 厂家： | 
Linear |
| 描述： | 5V RS232 Transceiver with One Receiver Active in Shutdown |
| 文件： | 总8页 (文件大小：248K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LT1341
5V RS232 Transceiver with One
Receiver Active in Shutdown
U
DESCRIPTIO
EATURE
S
F
The LT®1341 is an advanced low power three-driver, five-
receiver RS232 transceiver. Included on the chip is a
shutdown pin for reducing supply current to near zero.
During shutdown one receiver remains active to detect
incoming RS232 signals, for example, to wake up a
system. All other receivers and the drivers assume high
impedance states during shutdown.
■
■
■
■
■
■
■
■
■
■
■
■
One Receiver Remains Active While in Shutdown
ESD Protection Over ±10kV
Uses Small Capacitors: 0.1µF, 0.2µF
60µA Supply Current in Shutdown
Pin Compatible with LT1137A
120kBaud Operation for RL = 3k, CL = 2500pF
250kBaud Operation for RL = 3k, CL = 1000pF
CMOS Comparable Low Power: 60mW
Operates from a Single 5V Supply
Easy PC Layout: Flowthrough Architecture
Rugged Bipolar Design
The driver disable function provides additional control of
operating mode. When driver disable is high the charge
pump and drivers turn off. Receivers continue to operate
during driver disable.
Outputs Assume a High Impedance State When
Off or Powered Down
Absolutely No Latchup
Available in SSOP Package
New ESD structures on the chip allow the LT1341 to
survive multiple ±10kV strikes, eliminating the need for
costly TransZorbs® on the RS232 line pins.
■
■
The LT1341 is fully compliant with all EIA RS232 specifi-
cations and operates in excess of 120kbaud even driving
heavy capacitive loads.
O U
PPLICATI
S
A
■
Notebook Computers
Palmtop Computers
, LTC and LT are registered trademarks of Linear Technology Corporation.
TransZorb is a registered trademark of General Instruments, GSI
■
U
O
TYPICAL APPLICATI
Output Waveforms
+
–
1
2
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
V
RECEIVER
OUTPUT
0.1µF
0.1µF
V
CC
C
L = 50pF
2 × 0.1µF
3
LT1341
2 × 0.1µF
4
DRIVER 1 IN
RX1 OUT
5
DRIVER 1 OUT
RX1 IN
DRIVER
6
R
DRIVER 2 IN
RX2 OUT
OUTPUT
7
RL = 3k
L = 2500pF
DRIVER 2 OUT
RX2 IN
TO LOGIC
C
8
RX3 OUT
TO LINE
9
RX3 IN
RX4 OUT
10
11
12
13
14
RX4 IN
DRIVER 3 IN
RX5 OUT (LOW-Q)
INPUT
DRIVER 3 OUT
RX5 IN (LOW-Q)
ON/OFF
RING DETECT IN
GND
µCONTROLLER
OR
µPROCESSOR
DRIVER DISABLE
NC
LT1341 • TA02
NC
SHUTDOWN
CONTROL OUT
LT1341 • TA01
1
LT1341
W W W
U
/O
ABSOLUTE AXI U RATI GS
(Note 1)
PACKAGE RDER I FOR ATIO
TOP VIEW
ORDER PART
Supply Voltage (VCC) ................................................ 6V
V+ ........................................................................ 13.2V
V– ...................................................................... –13.2V
Input Voltage
NUMBER
+
–
V
1
2
3
4
5
6
7
8
9
28
V
–
+
5V V
27 C2
26 C2
CC
+
C1
LT1341CG
LT1341CNW
LT1341CSW
–
C1
25 DRIVER 1 IN
24 RX1 OUT
Driver ........................................................... V+ to V–
Receiver ................................................ 30V to –30V
Output Voltage
DRIVER 1 OUT
RX1 IN
23 DRIVER 2 IN
22 RX2 OUT
DRIVER 2 OUT
RX2 IN
21 RX3 OUT
Driver .................................................... – 30V to 30V
Receiver .................................... – 0.3V to VCC + 0.3V
Short Circuit Duration
RX3 IN
20 RX4 OUT
RX4 IN 10
19 DRIVER 3 IN
RX5 OUT
(LOW-Q)
17 GND
DRIVER
DISABLE
15 NC
DRIVER 3 OUT 11
18
V+ ................................................................... 30 sec
V– ................................................................... 30 sec
Driver Output.............................................. Indefinite
Receiver Output.......................................... Indefinite
Operating Temperature Range
RX5 IN
(LOW-Q)
ON/OFF 13
12
16
NC 14
G PACKAGE
NW PACKAGE
28-LEAD PLASTIC SSOP 28-LEAD (WIDE) PDIP
SW PACKAGE
28-LEAD (WIDE) PLASTIC SO
LT1341C................................................. 0°C to 70°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
TJMAX = 125°C, θJA = 96°C/ W (G)
TJMAX = 125°C, θJA = 56°C/ W (NW)
TJMAX = 125°C, θJA = 85°C/ W (SW)
Consult factory for Industrial and Military grade parts.
ELECTRICAL CHARACTERISTICS (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Power Supply Generator
+
V Output
8.6
–7
14
V
V
mA
–
V Output
Supply Current (V
)
CC
(Note 3)
17
Supply Current When OFF (V
)
Shutdown (Note 4)
Driver Disable
●
0.06
3
0.150
mA
mA
CC
Supply Rise Time
Shutdown to Turn-On
C1 = C2 = 0.2µF,
C = C = 0.1µF
0.2
ms
+
–
ON/OFF Pin Thresholds
Input Low Level (Device Shut Down)
Input High Level (Device Enabled)
●
●
1.4
1.4
0.8
V
V
2.4
ON/OFF Pin Current
0V ≤ V
≤ 5V
●
–15
80
µA
ON/OFF
DRIVER DISABLE Pin Thresholds
Input Low Level (Drivers Enabled)
Input High Level (Drivers Disabled)
●
●
1.4
1.4
0.8
V
V
2.4
DRIVER DISABLE Pin Current
Oscillator Frequency
0V ≤ V
≤ 5V
●
–10
500
µA
kHz
DRIVER DISABLE
130
2
LT1341
ELECTRICAL CHARACTERISTICS
(Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Any Driver
Output Voltage Swing
Load = 3k to GND
Input Low Level (V
Positive
Negative
●
●
5
7.3
– 6.5
1.4
1.4
V
V
V
V
–5
0.8
Logic Input Voltage Level
= High)
= Low)
●
●
OUT
Input High Level (V
2
OUT
Logic Input Current
0.8V ≤ V ≤ 2V
●
5
±17
10
20
µA
mA
µA
kBaud
kBaud
IN
Output Short-Circuit Current
Output Leakage Current
Data Rate (Note 7)
V
= 0V
±9
OUT
Shutdown V
= ±30V (Note 4)
●
100
OUT
R = 3k, C = 2500pF
120
250
L
L
R = 3k, C = 1000pF
L
L
Slew Rate
R = 3k, C = 51pF
15
6
30
V/µs
V/µs
L
L
R = 3k, C = 2500pF
4
L
L
Propagation Delay
Output Transition t High to Low (Note 5)
0.6
0.5
1.3
1.3
µs
µs
HL
Output Transition t Low to High
LH
Any Receiver
Input Voltage Thresholds
Input Low Threshold (V
Input High Threshold (V
= High)
= Low)
0.8
1.3
1.7
0.4
5
V
V
V
kΩ
µA
OUT
2.4
1.0
7
OUT
Hysteresis
●
●
0.1
3
Input Resistance
Output Leakage Current
Receivers 1 Through 4
Output Voltage
Shutdown (Note 4) 0 ≤ V
≤ V
1
10
OUT
CC
Output Low, I
Output High, I
= –1.6mA
= 160µA (V = 5V)
●
●
0.2
4.2
–20
20
250
350
0.4
V
V
mA
mA
ns
ns
OUT
3.5
10
OUT
CC
Output Short-Circuit Current
Propagation Delay
Sinking Current, V
= V
–10
OUT
CC
= 0V
Sourcing Current, V
OUT
Output Transition t High to Low (Note 6)
600
600
HL
Output Transition t Low to High
LH
Receiver 5 (Low-I RX)
Q
Output Voltage
Output Low, I
Output High, I
Sinking Current, V
Sourcing Current, V
Output Transition t High to Low (Note 6)
Output Transition t Low to High
= –500µA
= 160µA (V = 5V)
●
●
0.2
4.2
–4
4
1
1
0.4
–2
V
V
mA
mA
µs
µs
OUT
3.5
2
OUT
CC
Output Short-Circuit Current
Propagation Delay
= V
OUT
CC
= 0V
OUT
3
3
HL
LH
The
●
denotes specifications which apply over the full operating
Note 5: For driver delay measurements, R = 3k and C = 51pF. Trigger
L L
temperature range (0°C ≤ T ≤ 70°C for commercial grade).
Note 1: Absolute Maximum Ratings are those values beyond which the life
points are set between the driver’s input logic threshold and the output
transition to the zero crossing (t = 1.4V to 0V and t = 1.4V to 0V).
A
HL
LH
of the device may be impaired.
Note 6: For receiver delay measurements, C = 51pF. Trigger points are
set between the receiver’s input logic threshold and the output transition
L
Note 2: Testing done at V = 5V and V
= 3V.
ON/OFF
CC
to standard TTL/CMOS logic threshold (t = 1.3V to 2.4V and t = 1.7V
HL
LH
Note 3: Supply current is measured as the average over several charge
to 0.8V).
+
–
pump cycles. C = C = 0.1µF, C1 = C2 = 0.2µF. All outputs are open with
Note 7: Data rate operation guaranteed by slew rate, short-circuit current
and propagation delay tests.
all driver inputs tied high.
Note 4: Supply current and leakage measurements in shutdown are
performed with V
disable are performed with V
≤ 0.1V. Supply current measurements using driver
ON/OFF
≥ 3V.
DRIVER DISABLE
3
LT1341
TYPICAL PERFOR A CE CHARACTERISTICS
U W
Driver Output Voltage
Receiver Input Thresholds
Supply Current vs Data Rate
10
8
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
80
70
60
R
= 3k
OUTPUT HIGH
L
3
R
C
DRIVERS ACTIVE
= 3k
= 2500pF
L
L
6
V
V
= 5.5V
= 5V
= 4.5V
CC
V
CC
4
CC
50
40
2
INPUT HIGH
INPUT LOW
0
V
V
= 4.5V
CC
= 5.5V
CC
–2
–4
–6
–8
–10
30
20
10
0
V
= 5V
CC
OUTPUT LOW
–55
0
25
50
75 100 125
–55
0
25
50
75 100 125
–25
–25
0
25
50
75
125 150
100
TEMPERATURE (°C)
TEMPERATURE (°C)
DATA RATE (kBAUD)
LT1341 • TPC01
LT1341 • TPC02
LT1341 • TPC03
Supply Current in Shutdown
Supply Current in Driver Disable
DRIVER DISABLE Threshold
5
4
3
2
1
0
3.0
2.5
2.0
1.5
150
125
100
75
50
25
0
1.0
0.5
0
–55
0
25
50
75 100 125
–25
50
TEMPERATURE (°C)
100 125
–55 –25
25
50
TEMPERATURE (°C)
75
100 125
–55 –25
0
25
75
0
TEMPERATURE (°C)
LT1341 • TPC05
LT1341 • TPC04
LT1341 • TPC06
Supply Current
ON/OFF Thresholds
Driver Leakage in Shutdown
3.0
2.5
2.0
1.5
100
10
1
40
35
30
3
DRIVERS LOADED R= 3k
L
2
1
DRIVERS LOADED R= 3k
L
25
20
ON THRESHOLD
DRIVER LOADED R= 3k
L
V
= 30V
NO LOAD
OUT
15
10
5
1.0
0.5
0
V
= –30V
OUT
OFF THRESHOLD
0
0.1
–55
0
25
50
75 100 125
50
125
50
TEMPERATURE (°C)
100 125
–25
–55
0
25
75
–55 –25
0
25
75
100
–25
TEMPERATURE (°C)
TEMPERATURE (°C)
LT1341 • TPC08
LT1341 • TPC07
LT1341 • TPC09
4
LT1341
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Driver Short-Circuit Current
Receiver Short-Circuit Current
50
30
25
20
15
40
30
20
10
0
+
I
SC
–
RX1 TO RX4 I
SC
+
RX1 TO RX4 I
RX5 I
SC
–
–
I
SC
SC
10
5
+
RX5 I
SC
0
–55
0
25
50
75 100 125
–25
50
TEMPERATURE (°C)
100 125
–55 –25
0
25
75
TEMPERATURE (°C)
LT1341 • TPC11
LT1341 • TPC10
Driver Output Waveforms
Receiver Output Waveforms
DRIVER OUTPUT
RL = 3k
RX5 OUTPUT
L = 50pF
C
RX1 TO RX4
OUTPUT
DRIVER OUTPUT
R
L = 3k
C
L = 50pF
CL = 2500pF
INPUT
INPUT
LT1341 • TPC12
LT1341 • TPC13
U
U
U
PI FU CTIO S
VCC: 5V Input Supply Pin. This pin should be decoupled
with a 0.1µF ceramic capacitor close to the package pin.
Insufficient supply bypassing can lead to low output drive
levels and erratic charge pump operation.
in a high impedance state. All receivers remain active
under these conditions. Floating the driver disable pin or
driving it to a logic low level fully enables the transceiver.
Supplycurrentdropsto3mAwhenindriverdisablemode.
A logic low on the ON/OFF pin supersedes the state of the
DRIVER DISABLE pin.
GND: Ground Pin.
ON/OFF: A TTL/CMOS logic low puts the device in the low
power shutdown mode. All of the drivers and four receiv-
ers go to a high impedance state. Receiver RX5 remains
active while the transceiver is in shutdown. The trans-
ceiver consumes only 60µA of supply current while in
shutdown. A logic high fully enables the transceiver.
V+: Positive Supply Output (RS232 Drivers). V+ ≈ 2VCC
–
1.5V.Thispinrequiresanexternalchargestoragecapaci-
tor C ≥ 0.1µF, tied to ground or VCC. Larger value
capacitors may be used to reduce supply ripple. With
multiple transceivers, the V+ and V– pins may be paral-
leled into common capacitors. For large numbers of
transceivers, increasing the size of the storage capaci-
tors is recommended to reduce ripple.
DRIVER DISABLE: This pin provides an alternate control
for the charge pump and RS232 drivers. A logic high on
thispinshutsdownthechargepumpandplacesalldrivers
5
LT1341
U
U
U
PI FU CTIO S
V–: Negative Supply Output (RS232 Drivers). V– ≈
drive is moderately current limited. Short circuits on
–(2VCC – 2.5V). This pin requires an external charge one output can load the power supply generator and
storage capacitor C ≥ 0.1µF. To reduce supply ripple, may disrupt the signal levels of the other outputs. The
increase the size of the storage capacitor. With multiple driver outputs are protected against ESD to ±10kV for
transceivers, the V+ and V– pins may be paralleled into human body model discharges.
common filter capacitors.
RX IN: Receiver Inputs. These pins accept RS232 level
C1+,C1–,C2+,C2–:CommutatingCapacitorInputs.These
pins require two external capacitors C ≥ 0.2µF: one from
C1+ to C1–, and another from C2+ to C2–. The capacitor’s
effective series resistance should be less than 2Ω. For
C ≥ 1µF, low ESR tantalum capacitors work well in this
application, although small value ceramic capacitors may
be used with a minimal reduction in charge pump compli-
ance. When a 12V supply is available, C1 may be omitted.
Connect the 12V supply to C1+ and V+. The 12V supply
should be decoupled with a 0.1µF ceramic capacitor.
signals (±30V) into a protected 5k terminating resistor.
ThereceiverinputsareprotectedagainstESDto±10kVfor
human body model discharges. Each receiver provides
0.4V of hysteresis for noise immunity.
RX OUT: Receiver Outputs with TTL/CMOS Voltage Lev-
els. Outputs are in a high impedance state when in shut-
down mode to allow data line sharing. Outputs, including
LOW-QRXOUT,arefullyshort-circuitprotectedtoground
or VCC with the power on, off, or in shutdown mode.
LOW Q-CURRENT RX IN: Low Power Receiver Input. This
special receiver remains active when the part is in shut-
down mode, consuming typically 60µA. This receiver has
the same input and protection characteristics as the other
receivers.
DRIVER IN: RS232 Driver Input Pins. These inputs are
TTL/CMOS compatible. Tie unused inputs to VCC.
DRIVER OUT: Driver Outputs at RS232 Voltage Levels.
Outputs are in a high impedance state when in shut-
down mode, V = 0V, or when the DRIVER DISABLE
CC
LOW Q-CURRENT RX OUT: Low Power Receiver Output.
This pin produces the same TTL/CMOS output voltage
levels with slightly decreased speed and short-circuit
current.
pin is active. Outputs are fully short-circuit protected
–
+
from V
= V + 30V to V
= V – 30V. Applying
OUT
OUT
higher voltages will not damage the device if the over-
U
ESD PROTECTIO
ESD Test Circuit
The RS232 line inputs of the LT1341 have on-chip protec-
tion from ESD transients up to ±10kV. The protection
structures act to divert the static discharge safely to
systemground. InorderfortheESDprotectiontofunction
effectively, the power supply and ground pins of the
LT1341 must be connected to ground through low imped-
ances.Thepowersupplydecouplingcapacitorsandcharge
pump storage capacitors provide this low impedance in
normalapplicationofthecircuit.Theonlyconstraintisthat
low ESR capacitors must be used for bypassing and
charge storage. ESD testing must be done with pins VCC,
V+, V– and GND shorted to ground or connected with low
ESR capacitors.
–
+
V
1
2
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
5V V
LT1341
CC
0.1µF
0.2µF
0.1µF
0.1µF
0.2µF
3
4
DRIVER 1 IN
RX1 OUT
5
DRIVER 1 OUT
RX1 IN
6
DRIVER 2 IN
RX2 OUT
7
DRIVER 2 OUT
RX2 IN
8
RS232
RX3 OUT
LINE PINS
PROTECTED
TO ±10kV
9
RX3 IN
RX4 OUT
10
11
12
13
14
RX4 IN
DRIVER 3 IN
RX5 OUT (LOW-Q)
GND
DRIVER 3 OUT
RX5 IN (LOW-Q)
ON/OFF
DRIVER DISABLE
NC
NC
LT1341 • ESD TC
6
LT1341
U
Dimensions in inches (millimeters) unless otherwise noted.
PACKAGE DESCRIPTIO
G Package
28-Lead Plastic SSOP (0.209)
(LTC DWG # 05-08-1640)
0.397 – 0.407*
(10.07 – 10.33)
0.205 – 0.212**
(5.20 – 5.38)
0.068 – 0.078
(1.73 – 1.99)
2827262524232221201918 1615
17
0° – 8°
0.301 – 0.311
(7.65 – 7.90)
0.0256
(0.65)
BSC
0.022 – 0.037
(0.55 – 0.95)
0.005 – 0.009
(0.13 – 0.22)
0.010 – 0.015
(0.25 – 0.38)
0.002 – 0.008
(0.05 – 0.21)
*DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
G28 SSOP 0694
5
7
8
1
2
3
4
6
9 101112 13 14
**DIMENSIONS DO NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
NW Package
28-Lead PDIP (Wide 0.600)
(LTC DWG # 05-08-1520)
0.070
1.455*
(1.778)
TYP
(36.957)
MAX
0.045 – 0.065
(1.143 – 1.651)
0.150 ± 0.005
(3.810 ± 0.127)
0.600 – 0.625
(15.240 – 15.875)
28 27 26 25 24 23 22 21 20 19 18 17 16 15
0.015
(0.381)
MIN
0.009 – 0.015
(0.229 – 0.381)
0.505 – 0.560*
(12.827 – 14.224)
+0.035
–0.015
0.625
0.125
(3.175)
MIN
0.035 – 0.080
(0.889 – 2.032)
0.018 ± 0.003
(0.457 ± 0.076)
+0.889
15.87
1
2
3
5
7
9
4
6
8
10 11 12 13 14
(
)
–0.381
0.100 ± 0.010
(2.540 ± 0.254)
N28 1197
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
SW Package
28-Lead Plastic Small Outline (Wide 0.300)
(LTC DWG # 05-08-1620)
0.697 – 0.712*
(17.70 – 18.08)
0.291 – 0.299**
(7.391 – 7.595)
0.037 – 0.045
(0.940 – 1.143)
0.093 – 0.104
(2.362 – 2.642)
0.010 – 0.029
(0.254 – 0.737)
28 27 26 25 24 23 22 21 20 19 18
17
16 15
× 45°
0° – 8° TYP
0.394 – 0.419
(10.007 – 10.643)
0.050
NOTE 1
(1.270)
0.009 – 0.013
TYP 0.014 – 0.019
0.004 – 0.012
(0.102 – 0.305)
(0.229 – 0.330)
NOTE 1
0.016 – 0.050
(0.406 – 1.270)
(0.356 – 0.482)
TYP
NOTE:
2
3
5
7
8
9
10 11 12 13 14 S28 (WIDE) 0996
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
1
4
6
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.
7
LT1341
TYPICAL APPLICATIO S
U
Operation Using 5V and 12V Power Supplies
–
+
V
1
2
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
V
LT1341
CC
+
0.1µF
5V V
CC
2 × 0.1µF
C1
C1
3
+
12V V
0.1µF
4
–
0.1µF
DRIVER 1 IN
RX1 OUT
DRIVER 2 IN
RX2 OUT
RX3 OUT
RX4 OUT
DRIVER 3 IN
RX5 OUT
GND
5
DRIVER 1 OUT
RX1 IN
6
7
DRIVER 2 OUT
RX2 IN
TO LOGIC
8
TO
LINE
9
RX3 IN
10
11
12
13
14
RX4 IN
DRIVER 3 OUT
RX5 IN
ON/0FF = 5V
NC
DRIVER DISABLE
NC
LT1341 • TA03
Typical Mouse Driving Application
–
+
V
1
2
3
4
5
6
7
8
9
28
27
26
V
LT1341
0.1µF
2 × 0.1µF
0.1µF
5V V
CC
2 × 0.1µF
MOUSE
25 DRIVER 1 IN
LOGIC “0”
LOGIC “0”
+
V
DRIVER 1 OUT
RX1 IN
24
RX1 OUT
23 DRIVER 2 IN
LOGIC
DCD
DSR
RX
(1)
DRIVER 2 OUT
RX2 IN
22
RX2 OUT
21 RX3 OUT
MOUSE DATA
LOGIC “1”
RX3 IN
20
RTS
TX
RX4 OUT
OPTICS
RX4 IN 10
DRIVER 3 OUT 11
RX5 IN 12
19 DRIVER 3 IN
–
18
CTS
DTR
RI
V
RX5 OUT
17
GND
13
16
ON/OFF
DRIVER DISABLE
NC
(9)
(5)
14
15
NC
DB9
LT1341 • TA04
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
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LTC1334
3 Driver/5 Receiver RS232 Transceiver
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±15kV ESD Protection
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1341fa LT/TP 1098 2K REV A • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 1993
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
8
●
●
(408)432-1900 FAX:(408)434-0507 www.linear-tech.com
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