LTC1344
LTC1344 is Software-Selectable Cable Terminator manufactured by Linear Technology.
LTC1344 Software-Selectable Cable Terminator
Features s
DESCRIPTIO s
U APPLICATIO S s s s
Software-Selectable Cable Termination for: RS232 (V.28) RS423 (V.10) RS422 (V.11) RS485 RS449 EIA530 EIA530-A V.35 V.36 X.21 Outputs Won’t Load the Line with Power Off
The LTC ® 1344 Features six software-selectable multiprotocol cable terminators. Each terminator can be configured as an RS422 (V.11) 100Ω minimum differential load, V.35 T-network load or an open circuit for use with RS232 (V.28) or RS423 (V.10) transceivers that provide their own termination. When bined with the LTC1343, the LTC1344 forms a plete software-selectable multiprotocol serial port. A data bus latch feature allows sharing of the select lines between multiple interface ports. The LTC1344 is available in a 24-lead SSOP.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Data Networking CSU and DSU Data Routers
TYPICAL APPLICATION
CTS DSR DCD DTR RTS RL TM RXD RXC TXC SCTE TXD LL
Daisy-Chained Control Outputs
LTC1343 D4 R4 R3 R2 R1 D3 D2 D1 R4 R3 R2 R1 LTC1343 D4 D3 D2 D1
13 5
22 6
10 8
23 20 19
16 3
17 12 15
11 24 14 2
DB-25 CONNECTOR
LTC1344 18
DTR A (108)
DSR B
DSR A (107)
RL A (140)
CTS B
CTS A (106)
DTR B
RTS B
RTS A...
