ISO7320CQDQ1

Overview

The ISO7320CQDQ1 is an automotive-grade, low-power, dual-channel digital isolator from Texas Instruments. It features a unidirectional signal path with two forward channels and zero reverse channels. The device operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 25 Mb/s. Key electrical specifications include a propagation delay of 36 ns, a rise time of 3.2 ns, and a fall time of 2.7 ns. It provides 3000 Vrms isolation via capacitive coupling and offers a common-mode transient immunity (CMTI) of 25 kV/µs. The component is qualified under AEC-Q100 standards for automotive applications.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability in vehicle environments
• Low power consumption design suitable for energy-efficient systems
• Robust electromagnetic compatibility performance ensuring stable operation
• Capacitive coupling technology providing high isolation voltage

Applications

• Automotive electronic control units requiring galvanic isolation
• Industrial communication interfaces needing high noise immunity
• Power monitoring systems utilizing isolated signal transmission

Procurement Notes

Verify the specific suffix 'QDR' versus 'QDQ' when ordering, as packaging differs significantly between reel and tube formats. Confirm that the component meets the required AEC-Q100 grade for your specific automotive application. Ensure input signals are compatible with the specified logic levels. Check for moisture sensitivity handling requirements during storage and assembly processes.

Selection Notes

Select this component when a dual-channel unidirectional isolator is required for automotive or industrial use. It is appropriate for designs needing 3000 Vrms isolation with low power dissipation. Consider the SOIC-8 package constraints and thermal characteristics. Compare against single-channel variants if only one isolated path is necessary to optimize board space and cost.

Part Context

This part belongs to the ISO732x-Q1 family of robust, low-power digital isolators. It shares architectural similarities with other members like the ISO7310CQDQ1 but differs in channel count. The family utilizes capacitive isolation technology to provide reliable signal transmission across isolation barriers while maintaining low power consumption and high EMC performance.

Replacement Considerations

ISO7320CQDRQ1 serves as a direct functional equivalent with identical electrical specifications, differing primarily in tape-and-reel packaging instead of tubes.