IL 3585E

Overview

The IL3585E is a digital isolator from NVE Corp/Isolation Products, utilizing IsoLoop® GMR technology. It integrates an RS-485 transceiver with three channels of isolation in a 16-SOIC package. The device supports data rates up to 40Mbps and operates on supply voltages between 3V and 5.5V. Key electrical specifications include 2500Vrms isolation voltage, 30kV/µs common-mode transient immunity, and propagation delays of 25ns maximum. It features low jitter and pulse skew for reliable high-speed communication.

Feature Summary

• Integrates RS-485 transceiver functionality with digital isolation
• Utilizes Giant Magnetoresistive (GMR) technology for signal transmission
• Provides high common-mode transient immunity for noise rejection
• Compatible with standard microcontroller interfaces without level shifting

Applications

• Industrial automation control systems
• RS-485 bus network nodes
• Factory floor sensor interfaces
• Medical equipment signal isolation

Procurement Notes

Verify the specific suffix 'E' to ensure compatibility with required operating temperature ranges and RoHS compliance status. Confirm that the 16-SOIC package dimensions match the PCB footprint requirements. Check datasheet revisions for any updates to electrical characteristics or recommended layout practices before finalizing procurement.

Selection Notes

Select this component when both RS-485 physical layer signaling and galvanic isolation are required in a single package. Consider the 40Mbps speed limit and 2500Vrms isolation rating against system requirements. Evaluate the GMR technology benefits over capacitive alternatives regarding power consumption and signal integrity in noisy environments.

Part Context

The IL3585E belongs to NVE's IsoLoop® family, which combines magnetic sensing with digital logic. This series targets applications needing robust isolation in harsh electromagnetic environments. It replaces discrete solutions by integrating transceiver and isolator functions, reducing board space and complexity while maintaining high performance standards.

Replacement Considerations

IL614E is listed as a similar alternative part number from the same manufacturer.