LTC1544CG#PBF

Drivers, Receivers, Transceivers Overview

The LTC1544CG#PBF is a software-selectable multiprotocol transceiver manufactured by Analog Devices Inc. It features four drivers and four receivers housed in a 28-lead SSOP package. The device operates from a single 5V supply (4.75V to 5.25V) and supports RS232, RS449, EIA530, EIA530-A, V.35, V.36, and X.21 protocols via mode select pins M0, M1, and M2. It includes DTE/DCE configuration and no-cable mode functionality. Operating temperature range for the CG suffix is 0°C to +70°C.

Drivers, Receivers, Transceivers Feature Summary

• Software-selectable protocol support for multiple serial standards including RS232, V.35, and X.21
• Integrated no-cable mode that reduces supply current and forces outputs to high impedance when disconnected
• Fail-safe receiver operation ensures logic high output if inputs are floating or shorted
• Configurable DTE or DCE port operation with dedicated control signal routing

Drivers, Receivers, Transceivers Applications

• Data networking equipment requiring flexible interface standards
• Channel Service Unit/Service Delivery Unit (CSU/DSU) implementations
• Data routers supporting multiprotocol serial connections

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix matches the required temperature grade; the 'CG' designation indicates commercial range (0°C to 70°C). Confirm pinout compatibility with existing DB-25 connector designs. Ensure external charge pump capacitors meet the datasheet specifications for stable voltage generation.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a single IC must handle diverse serial protocols without hardware changes. It requires an external charge pump chip like the LTC1543 for V.28/V.35 voltage generation. Verify that the application utilizes the LTC1344A for cable termination if switching between balanced and unbalanced standards is required.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC1544 family of multiprotocol transceivers designed for complete DTE/DCE interfaces. It is typically paired with the LTC1543 charge pump controller and the LTC1344A cable termination switch to form a comprehensive serial port solution compliant with European TBR2 and NET standards.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers: None identified.