ISL1535IRZ

Overview

The ISL1535IRZ is a high-speed, low-power RS-422/RS-485 transceiver manufactured by Intersil. It features one driver and one receiver within a single package, supporting data rates up to 10 Mbps. The device operates from a single 3.3V or 5V supply with a quiescent current of typically 150 µA. It includes thermal shutdown protection for the driver and fail-safe circuitry on the receiver to ensure a high logic state when inputs are open. The component is housed in an 8-pin SOIC package and is rated for operation over an industrial temperature range.

Feature Summary

• Supports RS-422 and RS-485 communication standards
• Integrated thermal shutdown protection for the driver section
• Fail-safe receiver design maintains a high output state during input disconnection

Applications

• Industrial automation control systems
• Building automation networks
• Multi-drop communication buses

Procurement Notes

Verify the specific manufacturer source, as Intersil operations were acquired by Renesas Electronics. Confirm that the component meets RoHS compliance requirements for the intended market. Ensure the ordering suffix matches the required tape-and-reel or tube packaging format. Validate the date code against project lifecycle requirements due to potential obsolescence status.

Selection Notes

Select this component for applications requiring differential signaling with moderate data throughput. Compare against higher-speed variants if transmission rates exceed 10 Mbps. Consider the operating voltage range to ensure compatibility with the system power rails. Evaluate the package size constraints relative to available PCB real estate.

Part Context

This part belongs to the family of balanced transceivers designed for noisy environments. It serves as a standard interface between microcontrollers and long-distance serial communication lines. The technology represents a mature solution for reliable half-duplex data transfer in industrial settings.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.