LTC1344A Datasheet - Linear Technology

DESCRIPTION
The LTC®1344A 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 combined with the LTC1543 and LTC1544, the LTC1344A forms a complete software-selectable multiprotocol serial port. A data bus latch feature allows sharing of the select lines between multiple interface ports.

FEATURES
■ 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

APPLICATIONS
■ Data Networking
■ CSU and DSU
■ Data Routers