ISL3172EIBZ-T

Overview

The ISL3172EIBZ-T 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 250 kb/s. The device features ±15kV IEC61000 ESD protection on the bus pins and full fail-safe receiver functionality. It draws a maximum quiescent current of 800 µA and includes thermal shutdown and current limiting for driver overload protection. The component is housed in an 8-lead SOIC package with a wide common-mode voltage range of -7V to +12V.

Feature Summary

• IEC61000 ESD protection rated at ±15kV on RS-485 I/O pins
• Full fail-safe design ensures logic high output when inputs are floating or shorted
• True 1/8 unit load capability allows connection of up to 256 devices on the bus

Applications

• Remote utility meter reading systems
• Industrial automation networks
• Building automation control systems

Procurement Notes

Verify the specific suffix 'T' indicates reel packaging during procurement. Confirm RoHS compliance status through official manufacturer documentation. Ensure the ordering information matches the required SOIC-8 package variant. Cross-reference the datasheet revision date to validate parameter accuracy before integration into production designs.

Selection Notes

Select this component for applications requiring low power consumption and robust ESD protection on RS-485 buses. The true 1/8 unit load feature is critical for expanding network node counts without repeaters. Verify that the 250 kb/s data rate meets system timing requirements. Ensure the 3.3V supply voltage aligns with the target platform's power rails.

Part Context

This part belongs to the ISL317xE series of low-power, high-speed RS-485/RS-422 transceivers. The series is characterized by its ability to support large network topologies due to reduced unit loading. The ISL3172EIBZ-T specifically denotes the SOIC-8 package variant within this family, designed for surface-mount assembly in compact industrial environments.

Replacement Considerations

Check for direct pin-compatible alternatives within the ISL317xE family. Verify if other manufacturers offer equivalent ±15kV ESD protected transceivers with matching 1/8 unit load specifications. Ensure replacement parts maintain the same 3.3V operating voltage and fail-safe characteristics.