ISL32457EIBZ-T

Overview

The ISL32457EIBZ-T is a half-duplex RS-422/RS-485 transceiver manufactured by Renesas Electronics Corporation. It integrates one driver and one receiver within an 8-pin SOIC package. The device supports data transmission rates up to 1 Mbps and operates on a supply voltage ranging from 3 V to 5.5 V. Key electrical specifications include a common-mode rejection capability of 20 V and overvoltage protection (OVP) rated at 60 V on the bus pins. The component functions reliably across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrated 60 V overvoltage protection on differential bus pins for enhanced system robustness
• High common-mode rejection ratio supporting reliable communication in electrically noisy environments
• Half-duplex architecture with single driver and single receiver configuration

Applications

• Industrial automation control networks
• Building automation systems
• Process control instrumentation

Procurement Notes

This specific part number is identified as End-of-Life (EOL). Verification of current availability requires checking authorized distributors for remaining stock or obsolete inventory channels. Designers must confirm lead times carefully, as production has ceased. Sourcing should prioritize verified suppliers to ensure authenticity and proper handling of discontinued components.

Selection Notes

Engineers selecting this component should verify compatibility with existing RS-422 or RS-485 network protocols. The 1 Mbps data rate and 60 V OVP are critical parameters for harsh industrial environments. Due to the EOL status, alternative sourcing strategies or pin-compatible replacements from the same family should be evaluated for long-term supply chain stability.

Part Context

The ISL32457EIBZ-T belongs to the ISL3245xE series of high-performance interface ICs originally developed by Intersil and now managed by Renesas. This series is characterized by its focus on durability through overvoltage protection features. The 'T' suffix indicates tape-and-reel packaging, while 'EIBZ' denotes the specific SOIC-8 package variant compliant with environmental standards.

Replacement Considerations

Public documentation lists ISL32457EIBZ as a manufacturer-recommended alternative. Other variants within the ISL32457E family may offer similar functionality but differ in package type or termination style. Cross-reference datasheets to ensure pinout and electrical characteristics match before substitution.