LTM2881HY-3#PBF

Overview

The LTM2881HY-3#PBF is a complete, isolated RS-422/RS-485 transceiver module from Analog Devices. It integrates a half-duplex transceiver with an isolated DC/DC converter in an LGA-32 package. The device operates on a single 3.3V supply and provides an isolated 5V output capable of delivering up to 200mA. It supports data rates up to 20 Mb/s and functions within a temperature range of -40°C to +105°C.

Feature Summary

• Integrates an isolated DC/DC converter providing up to 200mA at 5V without external components
• Includes selectable 120 ohm termination resistors for bus impedance matching
• Provides galvanic isolation between the logic side and the bus side

Applications

• Industrial automation control systems
• Factory floor sensor networks
• Medical equipment communication interfaces
• Building management system controllers

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm lot traceability and RoHS compliance status prior to integration. Ensure storage conditions meet humidity sensitivity requirements to prevent package degradation during assembly processes.

Selection Notes

Select this component when a compact, fully integrated solution for isolated RS-422/RS-485 communication is required. It eliminates the need for separate isolators and power supplies. Suitable for designs prioritizing board space reduction and simplified bill of materials in harsh electrical environments.

Part Context

This part belongs to the LTM2881 series of μModule transceivers. It shares the core architecture with variants like LTM2881HV-3#PBF but differs in operating voltage ranges and thermal specifications. The HY suffix typically denotes specific industrial temperature grading and packaging configurations within the Analog Devices portfolio.

Replacement Considerations

Direct pin-compatible substitutes include other LTM2881 series variants such as LTM2881HV-3#PBF, provided voltage and temperature ratings align with the design requirements. Cross-referencing datasheets for isolation voltage and current limits is essential before substitution.