ISL3179EIUZ-T

Overview

The ISL3179EIUZ-T is a half-duplex 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 high ESD protection, meeting IEC61000 standards for RS-485 I/O pins. It presents a low bus current load of +220µA/-150µA, equivalent to a 1/5 unit load, allowing up to 160 nodes on the network without repeaters. The receiver inputs provide full fail-safe functionality, ensuring a logic high output when floating or shorted. Packaged in an MSOP-8 format, it operates within a temperature range of -40°C to +85°C.

Feature Summary

• High electrostatic discharge (ESD) protection compliant with IEC61000 standards for robust communication environments
• Full fail-safe receiver design guarantees a defined logic high state during open, shorted, or undriven bus conditions
• Low bus current consumption enables connection of up to 160 transceivers on a single RS-485 network without signal degradation

Applications

• Industrial automation networks requiring high node density
• Remote utility meter reading systems utilizing RS-485 topology
• Building automation and control systems

Procurement Notes

Verify the specific suffix 'T' against official Renesas documentation to confirm tape-and-reel packaging specifications. Ensure the order matches the exact part number ISL3179EIUZ-T to guarantee correct package type and shipping configuration. Cross-reference manufacturer datasheets for any recent lifecycle status updates or pinout revisions before finalizing procurement.

Selection Notes

Select this component for applications requiring a single 3.3V power supply and high-speed differential communication up to 40 Mbps. The 1/5 unit load characteristic makes it suitable for large-scale RS-485 networks exceeding standard 32-unit load limits. Verify that the MSOP-8 package dimensions fit the available PCB space and thermal requirements of the target system design.

Part Context

This component belongs to the ISL3179E series of high ESD protected transceivers designed for balanced communication standards. It shares functional similarities with the ISL3180E but differs in duplex configuration, offering half-duplex operation with multiplexed receive and transmit lines. The series emphasizes low power consumption and high noise immunity for industrial environments.

Replacement Considerations

The ISL3179EIUZ is the tube-packaged equivalent of the ISL3179EIUZ-T variant. Both share identical electrical characteristics and pinouts; the distinction lies solely in the factory packaging method. No other direct substitutes are confirmed in the provided documentation.