LTM2881IY-5#PBF

Overview

The LTM2881IY-5#PBF is a complete galvanically isolated full-duplex RS485/RS422 μModule transceiver manufactured by Analog Devices Inc. It integrates the transceiver, isolation barrier, and power supply into a single BGA-32 package. The device supports data rates up to 20 Mb/s with half or full duplex operation. It operates on a 4.5 V to 5.5 V supply, drawing 15 mA of quiescent current. The unit provides an isolated output voltage of 5 V with 200 mA output current capability. It functions within a temperature range of -40°C to +85°C and includes ±15 kV ESD protection.

Feature Summary

• Integrates galvanic isolation, transceiver logic, and DC-DC converter in a single module
• Supports RS485, RS422, and PROFIBUS communication protocols
• Provides high electromagnetic interference immunity via integrated isolation barrier
• Includes built-in shutdown mode for low-power applications

Applications

• Industrial automation control systems
• Medical equipment communication interfaces
• GPS navigation system data links
• Building automation networks

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors. Confirm RoHS compliance status and humidity sensitivity handling requirements prior to assembly. Check for specific ordering suffixes that may indicate tape-and-reel packaging versus tray quantities. Ensure supply chain stability as availability may be subject to manufacturer allocation.

Selection Notes

Select this component when compact form factor and high isolation voltage are required without external discrete components. Suitable for designs needing robust noise immunity in electrically noisy environments. Compare against non-isolated alternatives if cost reduction is prioritized over signal integrity. Verify thermal management needs given the integrated power conversion capabilities.

Part Context

Part of the LTM2881 family of isolated transceivers. Similar models include LTM2881CV-5#PBF for commercial temperature ranges and LTM2882 series for RS232 protocols. These modules eliminate the need for external isolation capacitors and transformers, simplifying PCB layout and reducing design time for certified industrial interfaces.

Replacement Considerations

LTM2881CV-5#PBF offers identical electrical specifications but operates within a 0°C to +70°C temperature range instead of -40°C to +85°C. Direct pin-compatible substitution is possible if environmental conditions permit.