ISL32457EIUZ-T7A

Overview

The ISL32457EIUZ-T7A is a half-duplex RS-422/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 1 Mbps. The device features 60V overvoltage protection (OVP) on the I/O pins and provides a common-mode rejection ratio of 20V. It is housed in an 8-pin MSOP package with a junction temperature range of -40°C to +85°C. The component includes a shutdown mode for power reduction and utilizes a single 3.3V or 5V supply.

Feature Summary

• Integrated 60V overvoltage protection on differential bus pins
• High common-mode rejection capability for noisy environments
• Low-power shutdown mode for energy conservation
• Compliant with RS-422 and RS-485 communication standards

Applications

• Industrial automation control systems
• Building automation networks
• Metering applications requiring robust interface protection

Procurement Notes

Verify current availability status as discontinuation notices may apply. Confirm exact ordering suffixes match required packaging formats such as cut tape or reel. Check RoHS compliance documentation for specific regional regulatory requirements before finalizing procurement orders.

Selection Notes

Select this component when high-voltage fault tolerance is critical for bus line protection. Ensure the application requires half-duplex communication at speeds up to 1 Mbps. Verify that the system power supply aligns with the 3V to 5.5V operating range and that the MSOP-8 package fits the PCB layout constraints.

Part Context

This part belongs to the ISL3245xE family of OVP transceivers designed for harsh industrial environments. It shares functional similarities with other members like the ISL32455E but offers specific pinout and protection characteristics defined by the datasheet. The T7A suffix indicates a specific tape and reel packaging configuration for automated assembly.

Replacement Considerations

The ISL32457EIBZ is listed as a manufacturer-recommended alternative, though it uses an SOIC-8 package instead of MSOP-8. Verify pin compatibility and thermal performance before substitution. Other family members may require schematic modifications due to differing pin configurations.