ISL32485EIBZ

Overview

The ISL32485EIBZ is a half-duplex RS-422/RS-485 transceiver manufactured by Renesas Electronics Corporation. It operates on a single 5 V supply and supports data rates up to 1 Mb/s. The device features overvoltage protection (OVP) on both the driver output and receiver input, allowing communication with faulty nodes powered up to ±60 V while maintaining operation from a 3.0 V to 5.5 V supply. It includes high electrostatic discharge (ESD) protection rated at ±15 kV according to the Human Body Model (HBM). The component is housed in an 8-lead SOIC package and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrated overvoltage protection on driver outputs and receiver inputs for fault tolerance
• High ESD protection capability ensuring reliability in harsh environments
• Compliant with RS-422 and RS-485 standards for differential communication

Applications

• Industrial control systems requiring robust communication interfaces
• Building automation networks utilizing RS-485 bus topologies
• Factory automation equipment needing overvoltage tolerant transceivers

Procurement Notes

Verify the specific suffix 'IBZ' corresponds to the lead-free RoHS-compliant variant in the official datasheet. Confirm the package type is SOIC-8 and check for any recent Product Change Notifications (PCNs) regarding assembly sites or labeling updates. Ensure the supplier provides valid traceability documentation for this Renesas part number.

Selection Notes

Select this component when designing systems that require RS-485 communication with inherent overvoltage protection on I/O lines. It is suitable for applications where nodes may be powered down or subjected to voltage faults exceeding the supply rail. Compare against other members of the ISL32485E series if different pinouts or thermal packages are required.

Part Context

This part belongs to the ISL32485E family of high-speed, overvoltage-tolerant transceivers. It shares functional similarities with other Renesas interface ICs designed for noisy industrial environments. The 'E' suffix typically denotes enhanced features such as improved ESD ratings compared to standard variants.

Replacement Considerations

ADM1487EARZ is a documented similar alternative from Analog Devices Inc. Verify pin compatibility and electrical specifications before substitution.