ISL31492EIBZ

Overview

The ISL31492EIBZ is a half-duplex, fault-protected RS-485/RS-422 transceiver operating on a single 5V supply. It supports data rates up to 250kbps with a typical quiescent current of 2.3mA and shutdown current of 10µA. The device features ±60V bus pin fault protection and an extended common mode range of ±25V. It includes hot-plug circuitry, full fail-safe receivers, and slew-rate limiting. Packaged in an 8-lead SOIC (M8.15) for the -40°C to +85°C temperature range.

Feature Summary

• Bus pins protected against faults up to ±60V with ±80V transient tolerance
• Extended common mode voltage range of ±25V exceeds standard RS-485 requirements
• Full fail-safe receiver design ensures logic high output during open, shorted, or idle bus conditions
• Hot-plug functionality maintains three-state outputs during power-up and power-down

Applications

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

Procurement Notes

Verify the specific ordering suffix to confirm package type and tape/reel configuration. Confirm RoHS compliance status and moisture sensitivity level before assembly. Check for any product change notices regarding label updates or manufacturing site changes. Ensure the component meets the required operating temperature range for the target application environment.

Selection Notes

Select this part for applications requiring robust fault protection and wide common mode voltage tolerance. The half-duplex configuration is suitable for bidirectional communication where data flows one way at a time. Verify that the 250kbps data rate meets system timing requirements. Consider thermal dissipation characteristics when designing the PCB layout for the SOIC package.

Part Context

This component belongs to the ISL3149xE series of differential transceivers designed to exceed RS-485 and RS-422 standards. The series offers various duplex configurations and data rates. The ISL31492EIBZ specifically provides a cost-effective solution for rugged industrial environments requiring high noise immunity and bus protection.

Replacement Considerations

Refer to the ISL32490E Series datasheet for exact replacements if newer designs are required.