ISO7421QDRQ1

Overview

The ISO7421QDRQ1 is an automotive-grade, low-power dual-channel digital isolator from Texas Instruments. It provides bidirectional signal isolation with a data rate of 1 Mbps and a common-mode transient immunity (CMTI) of 25 kV/µs. The device operates within a supply voltage range of 3 V to 5.5 V and features a propagation delay of 9 ns. It utilizes capacitive coupling technology for isolation and is housed in an 8-pin SOIC package.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards
• High-speed bidirectional communication capability
• Robust electromagnetic interference rejection

Applications

• Automotive electronic control units
• In-vehicle network interfaces
• Battery management systems

Procurement Notes

Verify the specific revision code on the component marking against the manufacturer's latest datasheet to ensure compatibility with current production specifications. Confirm that the part number suffix matches the required tape-and-reel packaging format for automated assembly processes.

Selection Notes

Select this component when automotive reliability and high CMTI are critical requirements. It serves as a direct replacement for standard industrial isolators in applications requiring strict compliance with automotive quality standards and robust noise immunity in electric vehicle environments.

Part Context

This part belongs to the ISO742x family of low-power digital isolators designed for demanding industrial and automotive applications. The QDRQ1 suffix indicates its qualification for automotive use, ensuring long-term availability and performance stability under harsh operating conditions typical of modern vehicle architectures.

Replacement Considerations

ISO7421QDRQ1R