ISO7321CQDRQ1

Overview

The ISO7321CQDRQ1 is an automotive-grade, low-power, dual-channel digital isolator from Texas Instruments. It features a 1/1 channel configuration with unidirectional signal transmission. The device supports data rates up to 25 Mb/s and provides galvanic isolation with an insulation voltage of 3000 Vrms. It operates within a supply voltage range of 3 V to 5.5 V, consuming a typical operating current of 3.7 mA. Key electrical parameters include a propagation delay of 33 ns and a common-mode transient immunity of 25 kV/µs. The component is qualified under AEC-Q100 standards and functions reliably across an extended temperature range from -40°C to +125°C.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability in vehicle environments
• Low-power architecture designed to minimize energy consumption during operation
• High-speed data transmission capability supporting 25 Mbps signaling rates
• Robust electromagnetic compatibility and high common-mode transient immunity

Applications

• Automotive electronic control units requiring isolated communication interfaces
• In-vehicle networks utilizing CAN or LIN protocols
• Battery management systems needing galvanic separation
• Charging infrastructure controllers

Procurement Notes

Verify the specific suffix 'CQDRQ1' to confirm automotive grade (AEC-Q100) and SOIC-8 packaging. Ensure the order matches the required insulation voltage and channel count. Confirm moisture sensitivity handling requirements upon receipt. Cross-reference the manufacturer part number with official Texas Instruments documentation to avoid counterfeit components. Validate that the revision level meets project specifications before integration.

Selection Notes

Select this component when automotive certification is mandatory for the application. Choose this model for designs requiring dual-channel isolation with low power consumption. Consider this part for systems operating between 3 V and 5.5 V where 25 Mbps speed is sufficient. Evaluate the SOIC-8 package constraints against PCB layout requirements. Compare performance metrics against other ISO732x variants if higher channel counts or different isolation ratings are needed.

Part Context

This device belongs to the ISO732x family of general-purpose digital isolators. It shares architectural similarities with other members like the ISO7321CD but differs in automotive qualification and specific parameter tolerances. The family focuses on providing reliable galvanic isolation for industrial and automotive applications using silicon dioxide technology.

Replacement Considerations

ISO7321CDQ1: Automotive-grade alternative with similar specifications. ISO7321CD: Commercial-grade version lacking AEC-Q100 qualification. ISO7321CQDR: Non-automotive variant with identical electrical characteristics.