ISL32455EIBZ-T

Overview

The ISL32455EIBZ-T is a half-duplex RS-422/RS-485 transceiver manufactured by Renesas Electronics. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 1 Mb/s. The device features ±60 V overvoltage protection on bus pins and ±20 V extended common-mode rejection range. It includes fault protection for open, shorted, or terminated receivers, ensuring a logic high output when inputs are floating. The component is housed in an SOIC-8 package and functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrated ±60 V overvoltage protection on RS-485 bus pins
• Extended common-mode range supporting voltages up to ±20 V
• Fault-safe receiver design prevents false triggering during idle states
• Compliant with RS-485 standards for differential signaling

Applications

• Utility metering and automated meter reading systems
• Industrial process control networks
• Building automation and environmental control systems

Procurement Notes

Verify the specific suffix 'T' indicates reel packaging configuration. Confirm RoHS compliance status through official datasheets. Ensure moisture sensitivity level (MSL) handling procedures are followed during assembly. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and current production status.

Selection Notes

Select this component for applications requiring robust bus protection against high-voltage faults. The ±20 V common-mode range exceeds standard RS-485 requirements, suitable for electrically noisy environments. Verify that the 1 Mb/s data rate meets system timing constraints. Ensure the SOIC-8 footprint aligns with existing PCB layout designs.

Part Context

This device belongs to the ISL3245xE family of transceivers designed for reliable serial communication. It shares core architectural features with related models like the ISL32452E and ISL32457E, differing primarily in duplex configuration and specific pinout assignments. The family emphasizes durability in harsh industrial conditions.

Replacement Considerations

Direct substitutes include other members of the ISL3245xE series such as the ISL32452EIBZ-T or ISL32457EIBZ-T, provided pin compatibility and functional requirements match. Verify equivalent voltage ratings and package dimensions before substitution.