IL 3422-3E

Overview

The IL 3422-3E is a galvanically isolated, differential bus transceiver designed for bidirectional data communication over balanced transmission lines. It utilizes giant magnetoresistance (GMR) technology to provide high-speed digital isolation with true simultaneous input-output capability. The device supports RS422 and RS485 protocols, offering a data rate of 20Mbps. It features an isolation voltage rating of 2500Vrms and a common-mode transient immunity (CMTI) of 15kV/µs. Packaged in a 16-SOIC footprint with a width of 3.90mm, it operates within a supply voltage range of 3V to 5.5V.

Feature Summary

• Galvanic isolation using giant magnetoresistance technology
• Supports RS422 and RS485 differential bus protocols
• True simultaneous input-output signal transmission
• High common-mode transient immunity

Applications

• Bidirectional data communication over balanced transmission lines
• Industrial embedded communication systems
• RS485 network interface isolation
• RS422 serial communication isolation

Procurement Notes

Verify the specific suffix '3E' against the manufacturer's current datasheet to confirm pinout compatibility and package dimensions. Ensure the selected component matches the required operating temperature range and voltage specifications for your target application environment before finalizing procurement.

Selection Notes

Select this component when simultaneous bidirectional data transfer is required without propagation delay skew between channels. It is suitable for applications demanding robust noise immunity and high CMTI ratings in electrically noisy industrial environments utilizing RS422 or RS485 standards.

Part Context

The IL 3422 series belongs to NVE's family of GMR-based digital isolators. These devices replace traditional optocouplers by offering higher speed, lower power consumption, and better reliability. The IL 3422 specifically targets differential bus applications requiring reliable isolation barriers.

Replacement Considerations

Consult official substitution guides for compatible GMR isolators. Verify that any alternative maintains the same 16-SOIC package and RS422/RS485 protocol support.