ISL32277EFRZ-T

Overview

The ISL32277EFRZ-T is an RS-422/RS-485 interface integrated circuit manufactured by Renesas Electronics Corporation. It features four receivers with a data rate of 20 Mb/s and operates within a supply voltage range of 3 V to 5.5 V. The device provides ±15 kV ESD protection on all ports and draws 5.5 mA of operating current. It is housed in a QFN-EP-24 package suitable for surface mount applications. The component supports an extended industrial temperature range from -40°C to +125°C.

Feature Summary

• Four differential receivers designed for RS-422 and RS-485 communication standards
• Robust electrostatic discharge protection rated at ±15 kV across all signal ports
• High thermal performance capability supporting operation up to 125°C junction temperature

Applications

• Industrial automation control networks requiring reliable serial communication
• Building automation systems utilizing RS-485 bus topologies
• Factory equipment interfaces exposed to high electromagnetic interference environments

Procurement Notes

Verify the specific suffix 'T' indicates tape and reel packaging versus tube variants when sourcing. Confirm RoHS compliance status through official manufacturer documentation as regulatory requirements may vary by production batch. Ensure the QFN-EP-24 footprint matches the target PCB layout constraints before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring multiple receiver channels without integrated drivers. Compare power consumption against single-receiver alternatives if channel count can be reduced. Verify that the 20 Mb/s speed meets the network timing requirements and that the 3 V to 5.5 V supply range aligns with the system power architecture.

Part Context

This part belongs to the ISL32277E series of high-speed serial interface devices. It complements driver-only or transceiver variants within the same product family, allowing modular design approaches for complex multi-drop networks. The QFN-EP-24 package offers thermal dissipation benefits over smaller form factors for dense board layouts.

Replacement Considerations

Check for ISL32277EIRZ-T which shares identical electrical specifications but differs in packaging format. Evaluate ISL32272EFVZ-T for driver-only applications if receiver functionality is not required. Consult official substitution guides to confirm pin-to-pin compatibility and thermal characteristics.