ISL3171EIUZ

Overview

The ISL3171EIUZ is a full-duplex RS-422 and RS-485 transceiver manufactured by Renesas Electronics Corporation. It operates on a single 3V to 3.6V supply voltage, with a typical operating current of 800µA. The device supports data rates up to 250kbps and features a receiver hysteresis of 15mV for noise immunity. It is housed in an 8-MSOP surface-mount package with dimensions of 3.00mm width. The component functions within a temperature range of -40°C to +85°C and includes differential outputs compliant with industrial communication standards.

Feature Summary

• Full fail-safe receiver design ensures a logic high output when inputs are floating, shorted, or undriven.
• Hot plug circuitry maintains Tx and Rx outputs in a high impedance state during power-up stabilization.
• Slew rate limited drivers reduce electromagnetic interference (EMI) and minimize signal reflections.
• True 1/8 unit load configuration allows connection of up to 256 devices on the bus without repeaters.

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm package type and tape/reel specifications. Ensure the procurement channel provides valid RoHS compliance documentation. Cross-reference the manufacturer part number with official Renesas databases to avoid counterfeit components. Confirm moisture sensitivity level requirements match storage and handling capabilities.

Selection Notes

Select this component for applications requiring full-duplex communication over RS-422 or RS-485 buses. The low quiescent current makes it suitable for battery-operated or energy-efficient systems. Verify that the required data rate does not exceed 250kbps. Ensure the system environment stays within the specified -40°C to +85°C operating temperature range.

Part Context

This device belongs to the ISL317xE family of transceivers from Renesas. The family shares common features such as ±15kV IEC61000 ESD protection and 3.3V operation. Variants within the series differ primarily in duplex configuration and package options. This specific model represents the full-duplex variant in an MSOP package.

Replacement Considerations

Direct substitutes include other models from the ISL317xE series, such as ISL3170E or ISL3172E, provided pin compatibility and functional requirements align. Verify that alternative parts maintain the same 1/8 unit load specification and fail-safe characteristics.