ISL31490EIBZ

Overview

The ISL31490EIBZ is a full-duplex RS-485/RS-422 transceiver manufactured by Renesas Electronics Corporation. It operates on a single 5V supply with a typical quiescent current of 2.3mA and supports data rates up to 250kbps. The device features ±60V fault protection and an extended common mode range of ±25V. It includes hot-plug circuitry, low-power shutdown capability (10µA), and full fail-safe receiver design. Packaged in a 14-lead SOIC format, it functions within a temperature range of -40°C to +85°C.

Feature Summary

• Fault protected bus pins withstand up to ±60V
• Extended common mode voltage tolerance of ±25V
• Full fail-safe receiver design for open or shorted inputs
• Hot-plug circuitry maintains three-state outputs during power transitions

Applications

• Utility meters and automated meter reading systems
• PROFIBUS and field bus networks
• Security camera networks
• Industrial process control networks

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm package type and reel specifications. Confirm RoHS compliance status and moisture sensitivity level requirements prior to assembly. Ensure thermal management aligns with the specified junction temperature limits for the selected operating environment.

Selection Notes

Select this component for applications requiring robust fault protection and high noise immunity in differential communication environments. The full-duplex architecture allows simultaneous transmission and reception. Verify that the system's common mode voltage does not exceed the ±25V limit and that the required data rate is compatible with the 250kbps specification.

Part Context

This part belongs to the ISL3149xE series of fault-protected, 5V powered differential transceivers. The family includes half-duplex variants like the ISL31492E and higher-speed models such as the ISL31496E. The ISL31490E specifically provides full-duplex operation with integrated driver and receiver enable controls.

Replacement Considerations

Consult the ISL32490E datasheet for exact replacement options. Verify pin compatibility and electrical characteristics before substituting other devices from the broader RS-485 interface family.