ISL3172EIUZ

Overview

The ISL3172EIUZ 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 and full fail-safe receiver inputs. It presents a true 1/8 unit load, allowing up to 256 devices on the bus. Operating temperature ranges from -40°C to +85°C. Quiescent current is 800 µA maximum. It is housed in an MSOP-8 package.

Feature Summary

• IEC61000 ESD protection on RS-485 I/O pins with ±15kV Class 3 level
• Full fail-safe design ensuring logic high output when inputs are floating or shorted
• True 1/8 unit load capability supporting up to 256 nodes without repeaters
• Hot plug functionality keeping outputs three-state during power-up

Applications

• Remote utility meter reading systems
• High node count field bus networks
• Building environmental control systems
• Security camera networks

Procurement Notes

Verify the specific suffix EIUZ corresponds to the MSOP-8 package variant rather than the SOIC-8 version. Confirm RoHS compliance status through official Renesas documentation before finalizing procurement orders. Ensure moisture sensitivity handling protocols are followed for surface mount assembly processes.

Selection Notes

Select this component for applications requiring low power consumption and high noise immunity in half-duplex configurations. The slew rate limited driver reduces electromagnetic interference compared to high-speed variants. Verify that the 250 kb/s data rate meets system requirements as higher speed options exist within the family.

Part Context

This part belongs to the ISL317xE series of low-power, high-speed RS-485/RS-422 transceivers. The series includes both half-duplex and full-duplex variants with different pinouts. The ISL3172E specifically provides half-duplex operation in an 8-lead package format suitable for space-constrained designs.

Replacement Considerations

ISL3172EIBZ is the equivalent part number utilizing an SOIC-8 package instead of MSOP-8. Both share identical electrical characteristics and functionality. Verify package dimensions and thermal performance differences when substituting between these two physical form factors.