LTM2881IV-3#PBF

Overview

The LTM2881IV-3#PBF is a complete galvanically isolated full-duplex RS485/RS422 μModule transceiver by Analog Devices. It integrates an isolated DC power supply delivering 5V at up to 200mA, eliminating the need for external components. The device supports data rates up to 20 Mb/s with a 3.3V input voltage and operates within a temperature range of -40°C to +85°C. Packaged in an LGA-32 format, it features selectable 120 ohm termination and high fault protection.

Feature Summary

• Integrates isolated DC power supply providing 5V output up to 200mA without external components
• Supports full-duplex RS485 and RS422 communication protocols with selectable 120 ohm termination
• Provides high common-mode transient immunity and fault protection for robust signal integrity

Applications

• Industrial automation control systems requiring galvanic isolation
• Factory floor sensor networks and instrumentation interfaces
• Medical equipment with strict isolation safety requirements
• Energy management and smart grid communication modules

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm package integrity and moisture sensitivity level handling procedures prior to assembly. Review the official datasheet for specific ordering suffixes and environmental compliance details such as RoHS status. Ensure storage conditions meet humidity sensitivity requirements to maintain device reliability during manufacturing processes.

Selection Notes

Select this module for designs requiring compact isolation solutions without discrete transformer or optocoupler complexity. The integrated power supply simplifies bill of materials and layout constraints. Consider the 3.3V logic interface compatibility and 20 Mb/s speed limits against system requirements. Evaluate thermal performance within the specified -40°C to +85°C operating range for industrial environments.

Part Context

Part of the LTM2881 series of isolated transceivers, offering complete integration in a small footprint. The IV-3 suffix denotes specific voltage and temperature grade variations within the family. This component addresses the need for reliable, high-speed serial communication in electrically noisy industrial settings while maintaining safety isolation standards.

Replacement Considerations

Direct substitutes include other LTM2881 variants with different voltage or temperature ratings, such as LTM2881HV-3#PBF or LTM2881CV-3#PBF, depending on operational requirements.