LTM2881IY-3

Overview

The LTM2881IY-3 is a complete galvanically isolated full-duplex RS485/RS422 μModule transceiver manufactured by Analog Devices Inc. It integrates all necessary components for high-speed communication without requiring external parts. The device supports data rates up to 20 Mb/s and operates with supply voltages of 3 V or 5 V. It features a 32-pin BGA package and provides robust isolation characteristics, including a common-mode transient immunity of 30 kV/µs.

Feature Summary

• Integrates a complete isolated transceiver solution in a compact μModule format
• Provides galvanic isolation for RS485 and RS422 communication protocols
• Supports full-duplex operation with high common-mode transient immunity

Applications

• Industrial automation systems requiring isolated serial communication
• Factory floor networks utilizing RS485/RS422 standards
• Medical equipment needing galvanic isolation for safety compliance

Procurement Notes

Verify the specific suffix (IY-3) against the official datasheet to confirm temperature range and package variant. Ensure compatibility with the intended PCB footprint for the 32-pin BGA configuration. Confirm that the design meets the required isolation voltage specifications for the application environment.

Selection Notes

Select this component when a fully integrated isolated transceiver is needed to reduce board space and design complexity. It is suitable for applications demanding high-speed data transfer up to 20 Mb/s with reliable galvanic isolation. Consider the operating temperature range associated with the IY suffix during selection.

Part Context

This part belongs to the LTM2881 series of isolated interface devices. It serves as a self-contained solution for converting standard logic signals to isolated RS485/RS422 levels. The module eliminates the need for discrete isolators and transformers, simplifying the schematic and layout process for engineers.

Replacement Considerations

Check for direct substitutes within the LTM2881 family, such as LTM2881CV-3#PBF or LTM2881HV-3#PBF, depending on the required operating voltage and temperature range. Verify pinout and electrical specifications before substitution.