ISL3179EIRZ

Overview

The ISL3179EIRZ 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 inputs are floating, shorted, or undriven. It presents a 1/5 unit load to the bus, allowing up to 160 devices per network without repeaters. The component operates within a temperature range of -40°C to +85°C and is housed in an 8-lead SOIC package.

Feature Summary

• High electrostatic discharge protection compliant with IEC61000 standards for robust industrial environments
• Full fail-safe receiver design maintains stable logic states during bus disconnection or fault conditions
• Low unit load characteristic enables high node density on RS-485 networks without signal repeaters

Applications

• Motor controller and position encoder systems
• Factory automation and field bus networks
• Industrial process control networks

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and tape-and-reel specifications. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the part number with official Renesas distributors to confirm availability status and lead times before finalizing procurement plans.

Selection Notes

Select this component for applications requiring half-duplex communication with high noise immunity. The 1/5 unit load specification makes it suitable for large-scale sensor networks where minimizing repeater usage is critical. Verify that the 3.3V operating voltage aligns with the system power architecture and that the 40 Mbps speed meets the bandwidth requirements of the application.

Part Context

This device belongs to the ISL317xE series of high-speed transceivers designed for balanced communication lines. It shares architectural similarities with the ISL3180E but differs in duplex configuration, offering a half-duplex solution optimized for cost-sensitive and space-constrained designs. The series emphasizes reliability through integrated thermal shutdown and driver current limiting protections.

Replacement Considerations

The ISL3180E serves as a functional counterpart within the same family, though it is configured for full-duplex operation rather than half-duplex. Designers must verify pinout compatibility and software configuration differences when substituting between these variants.