LTC1344AIG#PBF

Overview

The LTC1344AIG#PBF is a software-selectable cable terminator manufactured by Analog Devices Inc. It features six configurable terminators supporting protocols including RS232, RS422, RS485, and V.35. The device operates on a positive supply voltage (VCC) ranging from 4.75V to 5.25V and a negative supply voltage (VEE) of -5V ± 5%. It functions within an industrial temperature range of -40°C to +85°C and consumes a typical supply current of 1.0 mA. The component is housed in a 24-lead plastic SSOP package.

Feature Summary

• Software-configurable multiprotocol cable termination for serial interfaces
• Data bus latch feature enabling shared select lines across multiple ports
• High-impedance output state prevents line loading when power is off

Applications

• DTE or DCE multiprotocol serial interfaces with DB-25 connectors
• CSU and DSU equipment
• Data routers

Procurement Notes

Verify the specific suffix against official documentation to confirm the industrial temperature grade (-40°C to +85°C). Confirm the 24-lead SSOP package type matches design requirements. Ensure compatibility with the required VCC and VEE supply voltages before procurement.

Selection Notes

Select this component for designs requiring software-controlled switching between various serial standards without hardware changes. Consider the LATCH pin functionality if sharing control lines among multiple interface ports. Verify that the connected transceivers meet input impedance specifications to ensure compliance with V.35 termination requirements.

Part Context

The LTC1344A is part of a family of multiprotocol serial interface components. It is functionally similar to the LTC1344 but utilizes a different mode selection table. It is typically paired with transceivers such as the LTC1543 and LTC1544 to form complete software-selectable serial ports.

Replacement Considerations

LTC1344ACG#PBF