ISL3173EIBZ

Overview

The ISL3173EIBZ 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 500 kb/s. The device features ±15kV IEC61000 ESD protection on the bus pins and >7kV HBM protection on other pins. It incorporates full fail-safe receiver functionality, ensuring a logic high output when inputs are floating or shorted. The component utilizes a true 1/8 unit load design, allowing up to 256 devices on a single bus without repeaters. It includes thermal shutdown and current limiting for driver overload protection.

Feature Summary

• IEC61000 ESD protection rated at ±15kV on RS-485 I/O pins
• Full fail-safe receiver design prevents undefined states during open or short conditions
• True 1/8 unit load capability enables high node density networks
• Hot plug circuitry maintains three-state outputs during power-up

Applications

• Remote utility meter reading systems requiring high node counts
• Industrial control networks utilizing RS-485 or RS-422 protocols
• Building automation systems with multiple sensor nodes

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm package type and tape/reel specifications. Ensure the component meets RoHS compliance requirements for the target market. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and traceability before procurement.

Selection Notes

Select this component for applications requiring robust ESD protection and low power consumption in 3.3V environments. The 500 kb/s data rate suits moderate-speed industrial communication. Verify that the 1/8 unit load specification aligns with the total network node count requirements. Confirm compatibility with the system's common-mode voltage range and termination strategies.

Part Context

The ISL3173EIBZ belongs to the ISL317xE family of low-power, high-speed RS-485/RS-422 transceivers. This series is designed for balanced communication networks where reliability and noise immunity are critical. The device integrates advanced protection features typically found in higher-cost industrial interface solutions, making it suitable for harsh electrical environments.

Replacement Considerations

Publicly confirmed substitutes include the ISL32173EIBZ and ISL32453EIBZ from the same manufacturer family. Verify pinout compatibility and functional equivalence before substitution. Check datasheets for differences in data rates, supply voltage ranges, and package dimensions.