LTM2881CY-5#PBF

Overview

The LTM2881CY-5#PBF is a complete galvanically isolated full-duplex RS485/RS422 μModule transceiver manufactured by Analog Devices Inc. It integrates a low-noise, high-efficiency 5V output DC/DC converter for the isolated side, eliminating the need for external components. The device operates within a supply voltage range of 3V to 5.5V and supports data rates up to 20Mb/s. It features a BGA-32 package and functions across an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates a complete isolated RS485/RS422 transceiver with an internal DC/DC converter
• Provides galvanic isolation without requiring external magnetic components
• Supports full-duplex communication protocols

Applications

• Industrial automation systems
• Process control networks
• Building automation interfaces

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm the specific suffix matches project requirements. Check current availability status as supply may be limited. Ensure proper handling procedures are followed due to moisture sensitivity classification. Validate that the BGA-32 package footprint aligns with the design layout.

Selection Notes

Select this component when a compact, fully integrated isolated interface is required for RS485 or RS422 applications. It is suitable for designs needing to minimize board space and simplify power management on the isolated side. Consider the BGA-32 package constraints during PCB layout. Verify that the 20Mb/s data rate meets system timing requirements.

Part Context

This part belongs to the LTM2881 series of μModule transceivers designed for robust industrial communication. It replaces traditional discrete solutions involving separate isolators and charge pumps. The integration reduces design complexity and improves reliability in electrically noisy environments common in factory settings.

Replacement Considerations

Consult official Analog Devices documentation for direct pin-compatible alternatives within the same family. Verify electrical specifications against any proposed substitutes to ensure compatibility with existing isolation barriers and power supplies.