ISL3179EFRZ-T

Overview

The ISL3179EFRZ-T is a single RS-485/RS-422 transceiver manufactured by Renesas Electronics Corporation. 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 offers full fail-safe receiver functionality. It presents a 1/5 unit load, allowing up to 160 devices on the bus. Operating temperatures range from -40°C to +85°C. The component is housed in an 8-lead SOIC narrow package.

Feature Summary

• High electrostatic discharge protection compliant with IEC61000 standards for robust industrial environments
• Full fail-safe receiver design ensures a logic high output when inputs are floating or shorted
• Hot plug capability maintains three-state outputs during power-up sequences

Applications

• Remote utility meter reading systems requiring high node counts
• Industrial automation networks utilizing RS-485 communication protocols
• Building automation and control systems

Procurement Notes

Verify the specific suffix 'FRZ' against official Renesas documentation to confirm package type and temperature grade. Ensure compatibility with existing PCB footprints for the 8-lead SOIC narrow configuration. Cross-reference datasheet revisions to validate electrical parameters before finalizing procurement orders.

Selection Notes

Select this component for applications requiring high-speed data transmission up to 40 Mbps with strict ESD immunity requirements. The 1/5 unit load characteristic makes it suitable for large network topologies without repeaters. Verify that the 3.3V operating voltage aligns with the system power architecture.

Part Context

This part belongs to the ISL317xE family of low-power, high-speed transceivers designed for balanced communication lines. It complements other variants like the ISL3179EIRZ and ISL3179EFBZ-T7A, differing primarily in packaging and thermal specifications while maintaining core functional similarities within the RS-485/RS-422 interface category.

Replacement Considerations

ISL3179EIRZ and ISL3179EFBZ-T7A are functionally similar transceivers within the same product family. Verify pinout compatibility and package dimensions before substitution.