Interface
InfoCard 11
Linear Technology Corporation • 1630 McCarthy Blvd. • Milpitas, CA 95035-7417 • (408) 432-1900 • www.linear-tech.com • Literature Only: 1-800-4-LINEAR
Rev H 0100
, LTC and LT are registered trademarks of Linear Technology Corporation.
Supports RS232, RS449, EIA530, EIA530-A, V.35, V.36, X.21 Protocols
Single 5V Supply
Integrated Switched Termination
Flow-Through Pinout
NET1, NET2 and TBR2 Compliant
Multiprotocol Interface Solutions
D2
D1
D3
R2
R1
R3
D4
D5
50
50
= 100 OR OR OPEN
125
R4
R5
18
21
25
LL
LL
RL
RLTM
TM
RI
RI
2
14
24
11
15
12
17
9
3
1
4
19
20
8
23
10
6
22
5
13
7
16
TXD A
TXD B
SCTE A
SCTE B
RXD A
RXD B
RXC A
RXC B
RXC A
RXC B
RXD A
RXD B
RTS A
RTS B
DTR A
DTR B
CTS A
CTS B
DSR A
DSR B
CTS A
CTS B
SG
SHIELD
DB-25
CONNECTOR
CLOCK
AND DATA
CONTROL
TEST
TXC A
TXC B
SCTE A
SCTE B
TXD A
TXD B
TXC A
TXC B
DCD A
DCD B
DSR A
DSR B
RTS A
RTS B
DCD A
DCD B
DTR A
DTR B
DTE DCE
T
T
T
T
T
T
D1
D2
D3
R1
R2
R3
CLOCK AND CONTROL TEST SIGNALS
CHIPSET DATA SIGNALS SIGNALS LL RL TM TERMINATION PACKAGE
LTC1546
SSOP28
LTC1545
SSOP36
LTC1546
SSOP28
LTC1544
SSOP28
LTC1543
SSOP28
LTC1545
SSOP36
LTC1344A
SSOP24
LTC1543
SSOP28
LTC1544
SSOP28
LTC1344A
SSOP24
LTC1343
SSOP44
LTC1343
SSOP44
LTC1344
SSOP24
Interface
InfoCard 11
2
INTERFACE
Multiprotocol: RS232, EIA-530,
EIA-530A, RS449, V.35, V.36 or X.21
LocalTalk
/GEO Port
LTC1318 (5V DCE Combination RS422, RS562)
LTC1320 (DTE Combination RS422, RS562)
LTC1323 (5V DTE Combination RS422, RS562)
LTC1323-16 (5V Combination RS422, RS562)
LTC1324 (5V DTE or DTE Differential Line Transceiver)
LTC1343 Multiprotocol 4Dx/4Rx Transceiver
LTC1344 Software-Selectable Multiprotocol Cable Terminator
LTC1344A Software-Selectable Multiprotocol Cable Terminator
LTC1543 Multiprotocol 3Dx/3Rx Transceiver for DATA/CLK,
Single 5V Supply with Internal Charge Pump
LTC1544 Multiprotocol 4Dx/4Rx Transceiver for Control Signals,
Single 5V Supply
LTC1545 Multiprotocol 5Dx/5Rx Transceiver, Single 5V
Supply, Includes RL and TM Signals
LTC1546 Multiprotocol 3Dx/3Rx Transceiver for Data/Clock,
Includes Integrated Termination
Complete, Low Cost Systems May be Configured Using the Best
Combination of the Above Circuits.
LocalTalk is a registered trademark of Apple Computer, Inc.
IrDA is a registered trademark of Infrared Data Association.
Programmable EIA/TIA562,
RS232 or RS485
LTC1322, LTC1335
(4Dx/Rx RS562, 2Dx/Rx RS485)
LTC1321 (2Dx/Rx RS562 or RS232,
2Dx/Rx RS485)
LTC1334 (4Dx/Rx RS232,
2Dx/Rx RS485)
LTC1387 (2 RS232 Dx/Rx,
1 RS485 Dx/Rx)
5V Powered ±5V Powered
Infrared Data Receiver
Configurable Interface
Complete LocalTalk
®
Port
SCSI Active Terminators
LT1118-2.85 (For use with active negation line drivers)
LT1117-2.85 (For use with open collector line drivers)
SMBus
LTC1694/LTC1694-1 SMBus Accelerator, SOT-23
LTC1623 Dual, FET Switch Drivers with SMBus Control
LTC1663 10-Bit V
OUT
DAC in SOT-23
LTC1710 Dual High Side Switch with SMBus Control
LT1786F SMBus Programmable CCFL Switching Regulator
LTC1427-50 SMBus Interface Current Output DAC, SO-8
LT1319 General Purpose (Sharp, Newton, TV Remote)
LT1328 IrDA
®
Compatible (SIR, FIR, 4ppm)
NEW!
Interface
InfoCard 11
3
STANDARD INTERFACE
RS485/RS422
RS423
High Speed
Low Power
RS485 Devices
Shutdown/3 State RS423
Outputs
LTC485 (1Dx, 1Rx) Low Power Transceiver
LTC486 (4Dx) Low Power
LTC487 (4Dx) Low Power
LTC488 (4Rx) Low Power
LTC489 (4Rx) Low Power
LTC490 (1Dx, 1Rx) Low Power Full-Duplex
LTC491 (1Dx, 1Rx) Low Power Full-Duplex
LTC1481 (1Dx, 1Rx) Low Power w/S/D
LTC1483 (1Dx, 1Rx) Low EMI Low Pwr w/S/D
LTC1485 (1Dx, 1Rx) Low Power 10Mbps
LTC1487 (1Dx, 1Rx) 256 Nodes Low Pwr w/S/D
LTC1482 (1Dx, 1Rx) Failsafe and Carrier Detect
LTC1484 (1Dx, 1Rx) Failsafe (LTC485 Pinout)
LTC1690 (1Dx, 1Rx) Failsafe (LTC490 Full-Duplex Pinout)
LT1785 (1Dx, 1Rx) ±60V Protection, Failsafe, Low EMI (LTC485 Pinout)
LT1791 (1Dx, 1Rx) ±60V Protection, Failsafe, Low EMI (LTC491 Pinout)
LT1032 Quad Driver 5V/±12V Powered
3.3V Powered
Continued
V.35
LTC1480 (1Dx, 1Rx) 3.3V Powered
LTC1345 (3Dx, 3Rx) DTE or DCE Selectable, 5V
LTC1346A (3Dx, 3Rx) DTE or DCE Selectable, ±5V
50Mbps Differential
LTC1518 Quad RS485 Receiver (LTC488 Pinout)
LTC1519 Quad RS485 Receiver (LTC489 Pinout)
LTC1520 Quad Receiver (100mV Input Levels)
LTC1685 RS485 Transceiver (LTC485 Pinout)
LTC1686 RS485 Full Duplex Transceiver (LTC490 Pinout)
LTC1687 RS485 Full Duplex Transceiver (LTC491 Pinout)
100Mbps Differential
LTC1688 100Mbps Quad RS485 Driver
LTC1689 100Mbps Quad RS485 Driver
±15kV ESD
Protected
LT1785 (1Dx, 1Rx) Failsafe, Low EMI (LTC485 Pinout)
LT1791 (1Dx, 1Rx) Failsafe, Low EMI (LTC491 Pinout)
LTC1535 Isolated RS485 Transceiver
±60V Overvoltage
Protected
Isolated
NEW!
Interface
InfoCard 11
4
STANDARD INTERFACE
LT1331
LT1332
LTC1348
LTC1327
LTC1350
LT1137A
LT1141A
LT1237
LT1330
LT1331
LTC1337
LT1341
LT1342
LTC1347
LTC1349
LT1537
1 Rec’r Active in Shutdown, EIA562 Compatible
1 Rec’r Active in Shutdown, 3V Logic, 12V Supply
5 Receivers Active in Shutdown, 3V Logic
3V Logic, EIA562
2 Receivers Active in Shutdown, 3V Logic, EIA562
3-State Outputs, ±15kV
3-State Outputs, ±15kV
1 Receiver Active in Shutdown, ±15kV
1 Receiver Active in Shutdown, Also 3V Logic
1 Receiver Active in Shutdown, 3V or 5V Logic
3-State Outputs
1 Receiver Active in Shutdown
3V Logic, 3V Supply
5 Receivers Active in Shutdown
2 Receivers Active in Shutdown
5 Active in Shutdown, 3-State Outputs, 250kBaud
RS232/562
3V Supply
PC Serial Ports
3 Drivers, 5 Receivers
Receivers Active in Shutdown, Charge Pump
Included, ±10kV/±15kV ESD Protection
5V Supply
LTC1385
LTC1386
LT1180A
LT1181A
LT1280A
LT1281A
LT1381
LTC1382
LTC1383
LTC1384
LT1780
LT1781
3V Logic, EIA562, 3-State, Shutdown
3V Logic, EIA562
3-State, Shutdown
Very Low Power, 3-State, Shutdown
Very Low Power
Narrow SO Pkg
Ultra-Low Power, 3-State, Shutdown
Ultra-Low Power
2 Active in Shutdown, Rx Enable, 3-State, Shutdown
250kBaud, 3-State, Shutdown, ±15kV
250kBaud, ±15kV
3V Supply
5V Supply
LT1130A
LT1131A
LT1132A
LT1133A
LT1134A
LT1136A
LT1138A
LT1139A
LTC1338
(5Dx, 5Rx) Synchronous Communications
(5Dx, 4Rx) Modem/DCE Interface, 3-State, Shutdown
(5Dx, 3Rx) Modem/DCE Interface
(3Dx, 5Rx) PC/DTE Interface, ±15kV
(4Dx, 4Rx) 5V 1488/1489 Upgrade
(4Dx, 5Rx, PC/DTE Interface, 3-State, Shutdown
(5Dx, 3Rx) Modem/DCE Interface, 3-State, Shutdown
(4Dx, 4Rx) 1488/89 Upgrade, 12V Req’d, 3-State, Shutdown
(5Dx, 3Rx) Ultra Low Power, 3-State, Shutdown
LT1039-16
LT1039A
LT1135A
LT1140A
(3Dx, 3Rx) MC145406 Upgrade
(3Dx, 3Rx) 3-State, Shutdown, ±15kV
(5Dx, 3Rx) Modem/DCE Interface
(5Dx, 3Rx) Modem/DCE Interface, 3-State, Shutdown
5V, ±12V Supplies
Single Supply
2 Drivers/2 Receivers
Other Driver/Receiver Combinations
Charge Pump Included, 3-State Outputs
When Shutdown, ±10kV/±15kV ESD, Immune to Latch-Up
(No Charge Pump)
LT1030
LT1032 (4Dx) 1488 Upgrade, 3-State, Shutdown
(4Dx) 1488 Upgrade, RS423, 3-State, Shutdown
5V Supply
(With Charge Pump)
±12V Supplies
NEW!
±10kV/±15kV ESD
Interface
InfoCard 11
5
TYP I
Q
# Rx MAX
SUPPLY POWER SHDN ALIVE DATA ESD OUTPUT
VOLTAGE (mW) (µA) IN SD RATE (kV) LEVEL PACKAGE DEVICE
3V 0.66 0.2 0 120k 10 RS562 N18, SW18 LTC1385
3V 0.66 120k 10 RS562 N16, SW16 LTC1386
5V 1.1 0.2 0 120k 10 RS232 N18, SW18 LTC1382
5V 1.1 120k 10 RS232 N16, S16 LTC1383
5V 1.1 35 2 120k 10 RS232 N18, SW18 LTC1384
5V 40 250k 10 RS232 S16 LT1381
5V 40 1.0 0 250k 10 RS232 N18, SW18 LT1280A
5V 40 250k 10 RS232 N16, SW16 LT1281A
5V 45 1.0 0 250k 10 RS232 N18, SW18 LT1180A
5V 45 250k 10 RS232 N16, SW16 LT1181A
5V 40 1.0 0 250k 15 RS232 N18, SW18 LT1780
5V 40 1.0 0 250k 15 RS232 N16, S16, SW16 LT1781
Complete RS232 PC Serial Ports: 3 Drivers, 5 Receivers
±15kV ESD Protection (LT1137A/LT1237)
±10kV ESD Protection (All Others)
3V Logic Compatible
Receiver Keep-Alive in Shutdown
SO, SSOP Packages
Ultralow Power (LTC1337: 1.5mW)
Flowthrough Architecture
0.1µF Capacitors
Low Power Shutdown
120kBd Operation
Capable of Mouse Driving
3.3V or 5V Powered
TYP I
Q
# Rx Dx
SUPPLY ADD’L POWERSHDN ALIVE DIS- ESD OUTPUT
LOGIC VOLTAGE SUPPLY (mW) (µA) IN SD ABLE (kV) CAPS LEVEL DEVICE
3V 3V 1.5 1 0 10 4 x 0.1µF RS562 LTC1327
3V 3V 1.5 0.2 0 10 5 x 0.1µF RS232 LTC1348
10 5
3V 3V 1.5 35 2 10 4 x 0.1µF RS562 LTC1350
3V 3V +12V 1.5 70 1 10 1 x 10µF RS232 LT1332
1 x 1.0µF
3V 5V 3V 30 60 1 X 10 1 x 1.0µF RS232 LT1330
5 x 0.1µF
3V 3V 42 60 1 X 10 6 x 0.1µF RS562* LT1331
3V 5V 3V 34 60 1 X 10 6 x 0.1µF RS232
3V 5V 3V 60 1 0 X 10 6 x 0.1µF RS232 LT1342
5V 5V 1.5 1 0 10 4 x 0.1µF RS232 LTC1337
5V 5V 1.5 35 2 10 4 x 0.1µF RS232 LTC1349
5V 5V 1.5 80 5 10 4 x 0.1µF RS232 LTC1347
5V 5V 30 60 1 X 15 1 x 1.0µF RS232 LT1237
5 x 0.1µF
5V 5V 60 1 0 X 15 6 x 0.1µF RS232 LT1137A
5V 5V 60 60 1 X 10 6 x 0.1µF RS232 LT1341
Note: Devices requiring 6 x 0.1µF capacitors can use 2 x 0.2µF and 2 x 0.1µF capacitors.
*562-compatible
Single Supply RS232 2 Driver/2 Receiver Circuits
±15kV ESD Protection (LT1780/LT1781)
±10kV ESD Protection (All Others)
0.1µF Charge Pump Capacitors
Immune to Latch-Up
Low Power Shutdown
3-State Outputs When Shut Down
IC11
TO
LINE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
DRIVER OUT
RX IN
DRIVER OUT
RX IN
RX IN
RX IN
DRIVER OUT
RX IN
3V V
L
(SEE CHART)
28
27
26
25
24
23
22
21
20
19
18
17
16
15
DRIVER IN
RX OUT
DRIVER IN
RX OUT
RX OUT
RX OUT
DRIVER IN
RX OUT*
TO
LOGIC
V
V
+
5V/3V V
CC
C1
+
C1
CHARGE
PUMP C2
+
C2
ON/OFF = 5V DRIVER
DISABLE
GND
* REMAINS ALIVE IN SHUTDOWN
DEPENDING ON PART TYPE
EXCEPT LT1332 AND LTC1348
Typical Pin
Configuration
5V V
CC
0.1µF
+
+
+
+
0.1µF
0.1µF
0.1µF
5V/3V V
CC
ON/OFF
0.1µF
+
+
+
+
0.1µF
0.1µF
0.1µF
18-Pin Configuration
16-Pin Configuration
Interface
InfoCard 11
Linear Technology Corporation • 1630 McCarthy Blvd. • Milpitas, CA 95035-7417 • (408) 432-1900 • www.linear-tech.com • Literature Only: 1-800-4-LINEAR
ic11h ©1992 LT/TP 0100 4K
MAX MAX INDUSTRY
DATA MAX I
CC
STANDARD PART
CONFIGURATION V
CC
RATE I
CC
(SD) PINOUT ESD COMMENTS NUMBER
Full Duplex Dr./Rec. 5V 2.5M 500µA 75179 10kV Instustry Standard Low Power LTC490
Full Duplex Dr./Rec. 5V 2.5M 500µA 75ALS180 10kV Industry Standard, Low Power LTC491
Full Duplex Dr./Rec. 5V 350k 13mA N/A 8kV Isolated RS485 LTC1535
Full Duplex Dr./Rec. 5V 52M 7mA 75179 4kV Precision Delay RS485 Fail-Safe Transceiver (LTC490 Pinout) LTC1686
Full Duplex Dr./Rec. 5V 52M 7mA 75ALS180 4kV Precision Delay RS485 Fail-Safe Transceiver (LTC491 Pinout) LTC1687
Full Duplex Dr./Rec. 5V 5M 600µA 75179 15kV Differential Driver Receiver Pair with Fail Safe Receiver Output LTC1690
Full Duplex Dr./Rec. 5V 250k 9mA 0.3mA 75ALS180 15kV 60V Fault Protected RS485/422 Transceivers (LTC491 Pinout) LT1791
Quad Driver 5V 10M 150µA 75172 4kV 26LS31 (RS422) Industry Standard, Low Power LTC486
Quad Driver 5V 10M 150µA 75174 4kV 3487 (RS422) Industry Standard, Low Power LTC487
Quad Driver 5V/3V 100M 9mA 75172 4kV 100Mbps RS485 Quad Driver LTC1688
Quad Driver 5V/3V 100M 9mA 75174 4kV 100Mbps RS485 Quad Driver LTC1689
Quad Receiver 5V 10M 10mA 75173 10kV 26LS32 (RS422), Industry Standard, Low Power LTC488
Quad Receiver 5V 10M 10mA 75175 10kV 3486 (RS422), Industry Standard, Low Power LTC489
Quad Receiver 5V 52M 12mA 75173 4kV High Speed, Precision Delay Quad Line Drivers LTC1518
Quad Receiver 5V 52M 12mA 75175 4kV High Speed, Precision Delay Quad Line Drivers LTC1519
Transceiver 5V 2.5M 500µA 75176 4kV Industry Standard, Low Power LTC485
Transceiver 3V 2.5M 500µA1µA 75176 10kV True RS485 on 3V Supply LTC1480
Transceiver 5V 2.5M 500µA10µA 75176 10kV Shutdown LTC1481
Transceiver 5V 4M 700µA20µA N/A 15kV Low Power Transceiver with Receiver Fail Safe and Carrier Detect LTC1482
Transceiver 5V 150k 500µA10µA 75176 10kV Low EMI, Shutdown LTC1483
Transceiver 5V 4M 900µA20µA 75176 15kV Low Power Transceiver with Receiver Fail Safe LTC1484
Transceiver 5V 10M 3.5mA 75176 4kV High Speed LTC1485
Transceiver 5V 250k 200uA 10µA 75176 10kV High Input Impedance LTC1487
Transceiver 5V 52M 7mA 75176 4kV Precision Delay RS485 Fail-Safe Transceiver LTC1685
Transceiver 5V 250k 9mA 0.3mA 75176 15kV 60V Fault Protected RS485/422 Transceivers (LTC485 Pinout) LT1785
2
120kBd in EIA/TIA562 or RS232
10MBd in RS485/RS422
Power-Up/Down Glitch-Free Outputs
Driver Maintains High Impedance in
Three-State, Shutdown or With Power Off
Thermal Shutdown Protection
I/O Lines Can Withstand ±25V
Withstands Repeated ±10kV ESD Pulses
Dual Protocol Interface Solutions
SINGLE-ENDED DIFFERENTIAL SUPPLY
STD Tx Rx STD Tx Rx MODE VOLTAGE COMMENTS PKG DEVICE
562 2 1 422 1 1 Mode = 0 5V LocalTalk DCE, SW24 LTC1318
562 2 2 422 1 0 Mode = 1 Configurable Rec.
562 2 2 SEL = 0 ±5V User Configurable NW24 LTC1321
232 2 2 SEL = 0 5V, ±6.5V Includes Loopback SW24
422/485 2 2 SEL = 1 ±5V Mode
562 4 4 SEL = 0 ±5V User Configurable NW24 LTC1322
232 4 4 SEL = 0 5V, ±6.5V Includes Loopback SW24
422/485 2 2 SEL = 1 ±5V Mode
232 4 4 SEL = 0 5V User Configurable NW28 LTC1334
422/485 2 2 SEL = 1 Includes Loopback SW28
Mode SSOP28
562 4 4 SEL = 0 ±5V User Configurable NW24 LTC1335
422/485 2 2 SEL = 1 Common Output SW24
Enable, Loopback
232 2 2 422/485 1 1 5V Multiprotocol SSOP20 LTC1387
Transceiver SW20
RS485/RS422 Interface
V
CC
V
CC
V
CC
V
CC
V
CC
RS485 I/O
LOGIC I/O
AND ENABLES
V
CC
RS485 I/O
LOGIC I/O
Full-Duplex
1 Dx, 1 Rx
Transceiver
V
CC
RS485 I/O
LOGIC I/O
AND ENABLES
V
CC
Quad Enable
4 Dx Paired Enable
4 Dx Quad Enable
4 Rx Paired Enable
4 Rx Full-Duplex
1 Dx, 1 Rx