ISL31492EIUZ

Overview

The ISL31492EIUZ is a half-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 an ultra-low shutdown current of 10µA. The device supports data rates up to 250kbps and features ±60V fault protection on bus pins, along with an extended common mode range of ±25V. It utilizes an 8-lead MSOP package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Fault protected RS-485 bus pins withstand up to ±60V
• Extended common mode range allows operation with voltages up to ±25V
• Full fail-safe receiver design ensures logic high output when inputs are floating or shorted
• Hot plug circuitry maintains three-state outputs during power-up and power-down

Applications

• Utility meters and automated meter reading systems
• PROFIBUS and field bus networks
• Security camera networks
• Building lighting and environmental control systems

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type and tape/reel specifications. Confirm RoHS compliance status and moisture sensitivity level requirements prior to integration into manufacturing processes.

Selection Notes

Select this component for applications requiring robust fault protection and wide common mode voltage tolerance in harsh industrial environments. Ensure the half-duplex configuration aligns with system communication needs and that the 250kbps data rate meets bandwidth requirements.

Part Context

This device belongs to the ISL3149xE family of differential transceivers designed to exceed standard RS-485 and RS-422 specifications. It shares core architectural features with other members like the ISL31490E and ISL31495E, differing primarily in duplex configuration and maximum data rate capabilities.

Replacement Considerations

Consult the ISL32490E series datasheet for exact replacements if newer designs are required. Verify pin compatibility and electrical characteristics before substituting with other RS-485 transceivers from different manufacturers.