ISL3179EFRZ-T7A

Overview

The ISL3179EFRZ-T7A is a single RS-485/RS-422 transceiver manufactured by Renesas Electronics. It operates at a data rate of 40 Mb/s and requires a 3.3 V supply voltage. The device features full fail-safe receiver inputs that ensure a logic high output when inputs are floating, shorted, or undriven. It supports an extended industrial temperature range from -40°C to +125°C. The component is housed in an 8-lead SOIC Narrow package and includes hot plug circuitry to maintain high impedance outputs during power stabilization.

Feature Summary

• High electrostatic discharge (ESD) protection capabilities for robust communication environments
• Low bus current consumption allowing up to 160 unit loads on the network without repeaters
• Full fail-safe design ensures defined logic states under undefined input conditions

Applications

• Industrial automation networks requiring reliable half-duplex communication
• Building automation systems utilizing RS-485 bus topologies
• Process control applications operating in extreme temperature environments

Procurement Notes

Verify the specific suffix 'FRZ' against official Renesas documentation to confirm the extended temperature rating and RoHS compliance status. Ensure the ordering code matches the exact package type and tape-and-reel configuration required for your assembly process. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and traceability before finalizing procurement orders.

Selection Notes

Select this component for designs requiring high ESD immunity and operation at temperatures up to +125°C. The 40 Mb/s data rate suits moderate-speed serial communication needs. Verify that the 3.3 V supply voltage aligns with the system power architecture. Consider the 8-lead SOIC package constraints regarding PCB space and thermal dissipation requirements for the specific application layout.

Part Context

This part belongs to the ISL3179E series of high ESD protected transceivers. It shares functional similarities with the ISL3179EIUZ-T7A but differs in package style and potentially temperature grading. The series is designed to meet RS-485 and RS-422 standards while offering low power consumption and full fail-safe features for balanced communication networks.

Replacement Considerations

The ISL3179EIUZ-T7A serves as a related variant within the same product family. Verify if the package difference between FRZ and EUZ affects mechanical fit. Confirm that the temperature range specifications match the application requirements before substituting.