ISL31492EIBZ-T7A

Overview

The ISL31492EIBZ-T7A is a half-duplex RS-485/RS-422 transceiver manufactured by Renesas Electronics. 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, full fail-safe receivers, and low-power shutdown modes. Packaged in an 8-lead SOIC, 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 capability maintains three-state outputs during power transitions

Applications

• Utility meters and automated meter reading systems
• High node count fieldbus networks
• PROFIBUS and factory automation systems
• Security camera networks
• Building lighting and environmental control systems

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm tape and reel packaging specifications. Confirm RoHS compliance status and moisture sensitivity level requirements prior to assembly. Ensure the selected package variant matches the intended thermal management strategy for the target application environment.

Selection Notes

Select this component for applications requiring robust fault protection and high noise immunity in harsh industrial environments. The half-duplex configuration suits bidirectional communication needs where cost and pin count are constrained. Verify that the 250kbps data rate meets system timing requirements and that the 5V logic levels align with the host microcontroller interface.

Part Context

This part belongs to the ISL3149xE series of fault-protected differential transceivers designed to exceed standard RS-485 and RS-422 requirements. The family offers various duplex configurations and data rates, providing flexibility for diverse industrial communication protocols while maintaining compatibility with standard bus topologies.

Replacement Considerations

Consult the ISL32490E datasheet for exact replacement options if newer generation components are required. Verify pinout compatibility and electrical parameter alignment before substituting other RS-485 transceivers from different manufacturers.