ISL3179EFUZ-T

Overview

The ISL3179EFUZ-T 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 Mb/s. The device features ±15kV IEC61000 ESD protection on the bus pins and full fail-safe receiver inputs that ensure a logic high output when lines are floating or shorted. It utilizes a true 1/5 unit load, allowing up to 160 devices on a network without repeaters. The component includes hot-plug circuitry for three-state outputs during power-up and operates within a temperature range of -40°C to +125°C.

Feature Summary

• High electrostatic discharge (ESD) protection compliant with IEC61000 standards on RS-485 input/output pins.
• Full fail-safe receiver design guarantees a defined logic state under open, shorted, or undriven line conditions.
• Hot-plug functionality maintains high-impedance states on transmit and receive outputs during power stabilization.

Applications

• Industrial automation networks requiring robust communication over long distances.
• Building automation systems utilizing RS-485 bus topologies.
• Utility meter reading infrastructure supporting multiple nodes per bus.

Procurement Notes

Verify the specific suffix 'F' against official datasheets to confirm package type and tape/reel specifications. Ensure compatibility with 3.3V logic levels in the target system. Confirm RoHS compliance status through current manufacturer documentation before finalizing procurement orders.

Selection Notes

Select this component for applications requiring high-speed data transmission up to 40 Mbps with enhanced ESD resilience. The 1/5 unit load characteristic makes it suitable for dense multi-drop networks exceeding standard 32-unit limits. Verify thermal requirements for operation at elevated temperatures up to 125°C.

Part Context

This part belongs to the ISL317xE series of high ESD protected transceivers. It shares functional similarities with the ISL3179E but differs in packaging and specific ordering suffixes. The series is designed to meet RS-485 and RS-422 standards for balanced communication environments.

Replacement Considerations

The ISL3179EIUZ-T7A is a documented variant within the same family offering similar electrical characteristics. Verify pinout compatibility and package dimensions before substitution. Consult official replacement lists for any discontinued variants.