ISL32457EIBZ-T7A

Overview

The ISL32457EIBZ-T7A is a half-duplex RS-485 transceiver manufactured by Renesas Electronics Corporation. It operates within a supply voltage range of 3V to 5.5V and supports data rates up to 250kbps. The device features overvoltage protection on the bus pins up to 60V and common-mode rejection of 20V. It is housed in an 8-SOIC package with a width of 3.90mm. The operational temperature range spans from -40°C to +85°C, and it includes ESD protection capabilities.

Feature Summary

• Integrated overvoltage protection for robust bus pin handling
• High common-mode rejection capability for noise immunity
• Low power consumption suitable for battery-operated systems

Applications

• Industrial automation control networks
• Building automation and security systems
• Metering applications requiring reliable serial communication

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to end-of-life status. Confirm RoHS compliance and moisture sensitivity level (MSL 2) requirements prior to soldering. Check for specific packaging variants such as tape and reel configurations to ensure compatibility with automated assembly processes.

Selection Notes

Select this component for designs requiring half-duplex RS-485 communication with high voltage tolerance. Ensure the system voltage aligns with the 3V to 5.5V operating range. Consider the 8-SOIC footprint constraints during PCB layout. Verify that the 250kbps data rate meets application timing requirements.

Part Context

This part belongs to the ISL3245xE family of overvoltage protected transceivers. It shares functional similarities with other members like the ISL32455E but differs in duplex mode and specific package options. The series is designed for harsh industrial environments where bus line faults are common.

Replacement Considerations

Official substitutes include ISL32457EIBZ and ISL32457EIUZ. Verify package compatibility between SOIC-8 and MSOP-8 variants if physical space allows. Cross-reference datasheets for electrical parameter alignment before implementation.