LTM2881IV-5#PBF

Overview

The LTM2881IV-5#PBF is a complete galvanically isolated full-duplex RS485/RS422 μModule transceiver manufactured by Analog Devices Inc. It operates within a supply voltage range of 4.5 V to 5.5 V, with a typical operating current of 15 mA. The device supports data rates up to 20 Mb/s and provides an output current capability of 200 mA. It features integrated selectable 120 Ω termination resistors and high common-mode transient immunity of 30 kV/µs. The component is housed in a 32-pin LGA package and is rated for industrial temperatures from -40°C to +85°C.

Feature Summary

• Integrates a complete isolated DC power supply delivering 5V at up to 200mA without external components
• Provides galvanic isolation between logic and bus sides with high common-mode transient immunity
• Includes integrated selectable termination resistors to simplify board layout

Applications

• Industrial automation systems requiring robust serial communication
• Building automation networks utilizing RS485 or RS422 protocols
• Factory floor control interfaces needing electrical isolation

Procurement Notes

Verify the specific suffix IV-5 against official datasheets to confirm the industrial temperature grade (-40°C to +85°C) and LGA-32 package type. Ensure compatibility with existing isolation requirements and voltage levels before integration. Confirm availability status as distribution channels may report limited stock or discontinuation notices.

Selection Notes

Select this module when a compact, fully integrated solution for isolated RS485/RS422 communication is required. It eliminates the need for discrete isolators and DC-DC converters. Consider the 20 Mb/s speed limit and 200 mA drive strength for network topology planning. Verify that the 32-pin LGA footprint fits the target PCB design constraints.

Part Context

This part belongs to the LTM2881 series of μModules, which combine transceivers and digital isolators into a single package. The 'IV' suffix typically denotes the industrial temperature range variant. It serves as a drop-in replacement for designs previously using separate transceiver and isolator components, reducing bill of materials and assembly complexity.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.