LTM2885CY#PBF

Overview

The LTM2885CY#PBF is a complete, galvanically isolated full-duplex RS485/RS422 micro-module transceiver manufactured by Analog Devices Inc. It integrates high-speed digital isolation with an isolated DC power supply in a single package. Key electrical parameters include a reinforced insulation rating of 6500 VRMS for one minute, a data rate of 20 Mbps, and common-mode transient immunity (CMTI) of 50 kV/µs. The device operates at a supply voltage of 5 V, providing an isolated output current capability of up to 200 mA at 5 V. It features two channels and utilizes a 42-ball BGA package.

Feature Summary

• Integrates full-duplex RS485/RS422 transceiver functionality with galvanic isolation and isolated power generation within a single module.
• Provides high-reliability signal transmission through reinforced insulation rated at 6500 VRMS.
• Supports high-speed data communication with a maximum data rate of 20 Mbps and robust common-mode transient immunity.

Applications

• Industrial automation systems requiring isolated serial communication
• Medical equipment needing galvanic separation for safety compliance
• Test and measurement instruments utilizing RS485 or RS422 interfaces

Procurement Notes

Verify the specific suffix and package type against the official datasheet to ensure compatibility with your design requirements. Confirm availability status as distribution may vary. Ensure proper handling procedures are followed due to moisture sensitivity classification. Cross-reference pin assignments with the manufacturer's documentation before integration into the PCB layout.

Selection Notes

Select this component when a compact solution combining both signal isolation and isolated power delivery is required for RS485 or RS422 applications. It is suitable for designs where board space is limited and multiple discrete components would otherwise be needed. Consider the 5 V operating voltage and 200 mA isolated power capability when designing the power budget for downstream isolated circuitry.

Part Context

This part belongs to the LTM2881/LTM2885 family of micro-module transceivers from Analog Devices Inc. These modules are designed to simplify the design of isolated serial communication interfaces by integrating complex isolation barriers and power conversion circuits into a single surface-mount package, reducing component count and layout complexity.

Replacement Considerations

Consult the official Analog Devices substitution guide for verified alternatives. Ensure any replacement maintains the same insulation voltage rating, data rate, and package dimensions to fit existing footprints without redesign.

FAQ

What is the reinforced insulation rating of the LTM2885CY#PBF?

The device offers a reinforced insulation rating of 6500 VRMS for one minute.

Does the LTM2885CY#PBF include an isolated power supply?

Yes, it integrates an isolated DC power supply capable of delivering 5 V at up to 200 mA.

What is the maximum data rate supported by this transceiver?

The LTM2885CY#PBF supports a maximum data rate of 20 Mbps.