ISL3179EFRZ

Overview

The ISL3179EFRZ is a single RS-485/RS-422 transceiver manufactured by Renesas Electronics. It operates on a single 3.3V supply and supports data rates up to 40 Mbps. The device features ±15kV IEC61000 ESD protection on the bus pins and >7kV HBM protection on other pins. It presents a true 1/5 unit load, allowing up to 160 devices on the bus. Key electrical parameters include a minimum operating temperature of -40°C and a maximum of +85°C. The quiescent current is typically low, and it includes full fail-safe receiver inputs and hot-plug circuitry.

Feature Summary

• High electrostatic discharge (ESD) protection compliant with IEC61000 standards for robust industrial environments.
• Full fail-safe receiver design ensures a logic high output when inputs are floating, shorted, or undriven.
• Hot-plug functionality maintains outputs in a high-impedance state during power-up stabilization.

Applications

• Industrial automation networks requiring high node density
• Building automation and control systems
• Utility meter reading infrastructure

Procurement Notes

Verify the specific suffix 'FRZ' against official Renesas documentation to confirm package type and tape/reel specifications. Ensure compatibility with RoHS directives and check for any recent product change notices that may affect pinout or electrical characteristics before finalizing procurement orders.

Selection Notes

Select this component for applications requiring 40 Mbps speed and 3.3V operation. The 1/5 unit load characteristic is critical for designs needing more than 32 nodes without repeaters. Verify thermal requirements as the device supports up to +85°C junction temperature.

Part Context

This part belongs to the ISL317xE family of high-speed, low-power RS-485/RS-422 transceivers. It shares architectural similarities with the ISL3180E but differs in duplex configuration and unit load specifications. The series is designed for balanced communication lines in noisy environments.

Replacement Considerations

The ISL3180E is a related half-duplex variant within the same family. Verify if the specific 1/5 unit load requirement and 40 Mbps speed match the application needs before substituting.