LTC1545IG#PBF

Drivers, Receivers, Transceivers Overview

The LTC1545IG#PBF is a software-selectable multiprotocol transceiver housed in a 36-lead SSOP package. It operates from a single 5V supply and supports RS232, RS449, EIA530, EIA530-A, V.35, V.36, and X.21 protocols via mode select pins M0, M1, and M2. The device integrates five drivers and five receivers, including V.11 differential and V.28/V.10 single-ended interfaces. Electrical characteristics include a typical VCC supply current of 5mA (no load) and logic input high voltage of 2V. Operating temperature ranges are 0°C to 70°C for the C grade and -40°C to 85°C for the I grade.

Drivers, Receivers, Transceivers Feature Summary

• Software-selectable protocol support for multiple serial standards
• Integrated five-driver and five-receiver architecture
• Fail-safe receiver operation with logic high output on floating inputs
• No-cable mode functionality reducing supply current below 200mA

Drivers, Receivers, Transceivers Applications

• Data networking equipment
• Channel Service Unit/Data Service Unit (CSU/DSU)
• Data routers

Drivers, Receivers, Transceivers Procurement Notes

Verify the component matches the Analog Devices Inc. manufacturer specification and the 36-lead SSOP package format. Confirm the suffix #PBF indicates lead-free compliance and RoHS adherence as per official documentation. Ensure the specific grade (I or C) aligns with the required operating temperature range before integration into the design.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a complete DTE or DCE interface port is required without discrete termination resistors. The LTC1545 pairs with the LTC1343 charge pump and LTC1344A cable termination chip. Verify that the system requires software-configurable protocol switching between V.11, V.10, and V.28 electrical modes to justify the multiprotocol capability.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC1545 series of multiprotocol transceivers. It is designed to work in conjunction with the LTC1343 for charge pump generation and the LTC1344A for cable termination. The series enables flexible serial interface designs by allowing protocol selection through digital control signals rather than hardware changes.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers: None identified.