Software-Selectable Cable Terminator

The LTC1344A 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.

The LTC1344A is similar to the LTC1344 except for a difference in the Mode Selection table.

The LTC1344A is available in a 24-lead SSOP.

Applications

* Data Networking

* CSU and DSU

* Data Routers

* 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