ISL3174EIUZ-T

Overview

The ISL3174EIUZ-T is a full-duplex RS-422/RS-485 transceiver manufactured by Renesas Electronics Corporation. It operates on a single 3.3V supply voltage and supports data rates up to 500kbps. The device features ±15kV IEC61000 ESD protection on the bus pins and >7kV HBM protection on other pins. It incorporates true 1/8 unit load capability, allowing up to 256 devices on the network. The receiver provides full fail-safe functionality, ensuring a logic high output when inputs are floating or shorted. Operating temperature ranges from -40°C to +85°C.

Feature Summary

• IEC61000 compliant ESD protection on RS-485 I/O pins
• Full fail-safe receiver design for open, short, or undriven states
• True 1/8 unit load enabling high node count networks
• Hot plug circuitry maintaining three-state outputs during power-up

Applications

• Industrial control systems requiring robust communication
• Remote utility meter reading networks
• Building automation and security systems

Procurement Notes

Verify the specific suffix 'T' indicates tape and reel packaging configuration. Confirm RoHS3 compliance status through official Renesas documentation. Check for any recent Product Change Notifications (PCN) regarding labeling or manufacturing site updates. Ensure the 8-MSOP package dimensions match the target PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component for applications requiring full-duplex communication with high ESD immunity. The 500kbps rate suits moderate-speed industrial links. Verify that the 3.3V supply aligns with the system power architecture. Consider the 1/8 unit load feature if designing networks with numerous nodes to avoid repeater usage. Ensure thermal management supports the specified operating temperature range.

Part Context

This part belongs to the ISL317xE family of low-power, high-speed RS-485/RS-422 transceivers. The family includes variants like ISL3170E and ISL3171E with different speed or duplex configurations. All share common features such as ESD protection and fail-safe receivers. The ISL3174EIUZ-T specifically offers full-duplex operation at 500kbps in an MSOP-8 package.

Replacement Considerations

ISL3171EIUZ-T: Half-duplex variant with similar electrical characteristics but different pinout functionality. ISL3170EIUZ-T: Full-duplex variant with lower data rate specifications. Verify pin compatibility and functional requirements before substituting.