ISL3179EFBZ-T

Overview

The ISL3179EFBZ-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 functionality. It presents a true 1/8 unit load, allowing up to 256 devices on the network. Operating temperatures range from -40°C to +125°C. The component is housed in an SOIC-Narrow-8 package with a maximum quiescent current of 4 mA.

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.
• Low power consumption with minimal bus current draw to support extensive multi-drop networks.

Applications

• Remote utility meter reading systems requiring high node counts.
• Industrial automation control networks operating in harsh electrical conditions.
• Building automation and infrastructure monitoring systems.

Procurement Notes

Verify the specific suffix against official Renesas documentation to confirm tape and reel packaging specifications. Ensure the ordering part number matches the required temperature grade and package variant. Cross-reference the manufacturer's latest datasheet for any potential product change notices or lifecycle status updates before finalizing procurement plans.

Selection Notes

Select this component for applications requiring high-speed communication up to 40 Mbps with extended temperature capabilities. The 1/8 unit load characteristic makes it suitable for dense bus topologies without repeaters. Verify that the system voltage aligns with the fixed 3.3V requirement and that the SOIC-8 footprint fits the PCB layout constraints.

Part Context

This part belongs to the ISL317xE series of high ESD protected transceivers designed for balanced communication lines. The series includes variants supporting different duplex modes and package types. The ISL3179E specifically addresses half-duplex requirements within the RS-485 standard while maintaining compatibility with RS-422 protocols.

Replacement Considerations

Consult the official Renesas replacement list for verified equivalents. Potential substitutes may include other members of the ISL317xE family or newer generations such as the MAX3179E if pin-compatible and electrically equivalent options are confirmed by the manufacturer.