LTM2881IY-3#PBF

Overview

The LTM2881IY-3#PBF is a complete galvanically isolated full-duplex RS485/RS422 μModule transceiver manufactured by Analog Devices Inc. It integrates an isolated DC-DC converter providing up to 200mA at 5V, eliminating the need for external components. The device supports data rates up to 20 Mb/s with a propagation delay of 0.2 µs. It operates on a 3.3V supply with a maximum voltage of 3.6V and minimum of 3V. The module features high ESD protection up to ±15kV HBM on the transceiver interface and includes shutdown capabilities. It is housed in a compact LGA-32 package suitable for surface mount applications.

Feature Summary

• Integrates a complete galvanically isolated RS485/RS422 transceiver with an internal isolated DC-DC power converter.
• Provides robust electromagnetic interference immunity through high common-mode rejection and fault protection.
• Offers simplified design by requiring no external isolation components or bootstrap capacitors.

Applications

• Industrial automation control systems
• Factory floor sensor networks
• Building management communication buses

Procurement Notes

Verify the specific suffix 'IY' indicates the industrial temperature range and LGA-32 package configuration. Confirm RoHS compliance status via the official datasheet as distribution listings may vary. Ensure the procurement channel provides valid traceability documentation for this analog interface component.

Selection Notes

Select this component when a fully integrated isolated RS485/RS422 solution is required without external magnetic components. It is suitable for designs needing high-speed data transmission up to 20 Mb/s within a small footprint. Consider the integrated power delivery capability if board space for separate isolators is limited.

Part Context

This part belongs to the LTM2881 series of μModules from Analog Devices. These modules combine digital isolation technology with standard interface protocols to simplify PCB layout. The series addresses the growing demand for reliable communication in electrically noisy industrial environments while maintaining signal integrity.

Replacement Considerations

Direct substitutes include other LTM2881 variants such as LTM2881CV-3#PBF or LTM2881HV-3#PBF, depending on package and temperature requirements. Verify pin compatibility and electrical specifications before substitution.

FAQ

Does the LTM2881IY-3#PBF require external components for isolation?

No, it is a complete μModule that integrates the transceiver and isolated DC-DC converter, requiring no external isolation components.

What is the maximum data rate supported by this module?

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