ISL32177EIRZ

Overview

The ISL32177EIRZ is a quad receiver integrated circuit designed for RS-422 and RS-485 communication standards. Manufactured by Renesas Electronics Corporation, this component operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 80 Mb/s. It features four independent receivers housed in a QFN-EP-24 surface-mount package. The device provides robust protection with ±15 kV ESD performance and functions reliably across an operating temperature range of -40°C to +85°C. With a typical operating supply current of 15 mA, it is optimized for low-power industrial applications requiring high noise immunity.

Feature Summary

• Quad receiver architecture supporting RS-422 and RS-485 protocols
• High-speed data transmission capability up to 80 Mb/s
• Integrated ±15 kV electrostatic discharge (ESD) protection on bus pins
• Low power consumption with 15 mA typical operating current

Applications

• Industrial control systems and automation networks
• Building automation and security access control
• Factory floor sensor interfaces and instrumentation

Procurement Notes

Verify the specific suffix 'IRZ' confirms the QFN-EP-24 package and lead-free RoHS compliance when sourcing. Confirm the manufacturer is Renesas Electronics or Intersil legacy stock. Ensure the component meets the required moisture sensitivity level for your assembly process. Cross-reference the datasheet revision to ensure pinout compatibility with existing designs.

Selection Notes

Select this component when a quad receiver topology is required for half-duplex or full-duplex RS-485/RS-422 buses. It is suitable for designs needing high ESD tolerance without external protection diodes. Consider the 80 Mb/s speed limit against higher-speed alternatives if network throughput requirements exceed this threshold. Evaluate the QFN-EP-24 thermal pad requirements for PCB layout optimization.

Part Context

This part belongs to the ISL3217xE family of interface ICs from Renesas. It serves as the receive-only counterpart to transceiver models like the ISL32176. The series is characterized by high noise immunity and fail-safe features for reliable communication in electrically noisy environments common in industrial settings.

Replacement Considerations

Direct functional substitutes include the ISL32177EFVZ in a TSSOP package. Other compatible quad receivers from the same family should be verified for pin-to-pin compatibility and identical electrical specifications before substitution.