ISL32450EIUZ-T7A

Overview

The ISL32450EIUZ-T7A is a half-duplex transceiver manufactured by Renesas Electronics Corporation, designed for RS-485 and RS-422 communication protocols. It integrates one driver and one receiver within an 8-MSOP surface-mount package. The device supports data rates up to 1 Mbps and operates on a single supply voltage ranging from 3V to 5.5V. Key electrical specifications include a receiver input hysteresis of 30 mV and an operating temperature range spanning from -40°C to +85°C. The component features ±40V overvoltage protection on the bus pins and ±15kV ESD protection per IEC 61000-4-2 standards.

Feature Summary

• Integrated ±40V fault protection on driver outputs and receiver inputs to safeguard against high-voltage transients
• Full fail-safe receiver design ensures a logic high output state when differential inputs are floating or shorted
• Supports standard RS-485 and RS-422 communication protocols with robust common-mode rejection capabilities

Applications

• Industrial automation control systems requiring reliable serial communication
• Building automation networks utilizing RS-485 multi-drop configurations
• Metering infrastructure including electricity and gas smart meters

Procurement Notes

Verify the specific suffix 'T7A' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the 8-MSOP footprint matches the target PCB layout dimensions. Ensure compliance with RoHS3 directives if environmental regulations apply to the final product deployment.

Selection Notes

Select this component when designing circuits that require moderate data speeds up to 1 Mbps alongside enhanced overvoltage tolerance. The wide supply voltage range accommodates both 3.3V and 5V logic systems without level shifting. Consider the thermal performance of the MSOP package for dense board layouts where heat dissipation may be limited.

Part Context

This part belongs to the ISL3245xE family of fault-protected transceivers from Renesas. It shares functional similarities with other members like the ISL32455 but differs in specific pinout configurations and protection thresholds. The series is characterized by its ability to operate reliably in electrically noisy industrial environments while maintaining low power consumption during active and shutdown modes.

Replacement Considerations

Direct substitutes within the same family include the ISL32450EIBZ for SOIC-8 packaging variants. Cross-manufacturer replacements should be evaluated based on identical pin compatibility and matching overvoltage ratings to ensure seamless integration without circuit redesign.