LTM2881MPY-3#PBF

Overview

The LTM2881MPY-3#PBF is a complete galvanically isolated full-duplex RS485/RS422 μModule transceiver manufactured by Analog Devices. It integrates all necessary components for isolated communication without requiring external parts. The device supports data rates up to 20 Mb/s and operates with supply voltages ranging from 1.62 V to 5.5 V on the primary side and 3 V to 5.5 V on the secondary side. It features an operating temperature range of -55°C to +105°C and is housed in a compact LGA-32 package.

Feature Summary

• Integrates a complete isolated transceiver solution within a single μModule, eliminating the need for external discrete components.
• Provides galvanic isolation to break ground loops, ensuring uninterrupted communication despite large common-mode voltage variations.
• Supports both half-duplex and full-duplex operation modes for flexible system integration.

Applications

• Industrial automation systems requiring robust serial communication
• Factory automation networks with significant ground potential differences
• Medical equipment needing high isolation standards
• Test and measurement instruments

Procurement Notes

Verify the specific suffix MPY against official Analog Devices documentation to confirm the military-grade temperature range and packaging type. Ensure compatibility with the required isolation voltage ratings for your specific application environment before finalizing procurement decisions.

Selection Notes

Select this component when a compact, fully integrated isolated RS485/RS422 solution is required. It is suitable for designs where board space is limited and external isolation components are undesirable. Consider the 20 Mb/s data rate capability and the wide operating temperature range for harsh environments.

Part Context

This part belongs to the LTM2881 series of isolated transceivers. It is designed to replace traditional multi-component isolated interface solutions. Related development tools include the DC1746A-A and DC1746A-B demonstration boards for evaluating performance.

Replacement Considerations

Direct replacements may include other LTM2881 variants such as LTM2881CV-3#PBF or LTM2881HV-3#PBF, depending on the required temperature range and insulation specifications. Verify pinout and electrical characteristics against the target replacement datasheet.

FAQ

Does the LTM2881MPY-3#PBF require external components for isolation?

No, it is a complete μModule that integrates all necessary components for galvanic isolation without requiring external parts.

What is the maximum data rate supported by this transceiver?

The device supports data rates up to 20 Mb/s.