ISO7321FCQDRQ1

Overview

The ISO7321FCQDRQ1 is an automotive-grade, dual-channel digital isolator from Texas Instruments. It provides galvanic isolation with a 3000 Vrms insulation voltage and supports data rates up to 25 Mb/s. The device operates on a supply voltage range of 3 V to 5.5 V, drawing a typical operating current of 4.9 mA. It features a propagation delay of 32 ns and maintains functionality across an extended temperature range from -40°C to +125°C. Packaged in an SOIC-8 surface-mount format, it meets AEC-Q100 qualification standards for automotive applications.

Feature Summary

• Provides robust galvanic isolation with high common-mode transient immunity
• Optimized for low power consumption in automotive environments
• Supports bidirectional and unidirectional signal transmission

Applications

• Automotive electronic control units (ECUs)
• Inverter gate drive circuits
• Isolated communication interfaces in vehicle networks

Procurement Notes

Verify the specific suffix 'C' indicates the correct package variant and internal configuration for your design requirements. Confirm that the AEC-Q100 qualification aligns with your automotive reliability standards. Ensure the SOIC-8 footprint matches your PCB layout constraints. Cross-reference the datasheet revision date to ensure compatibility with your system specifications.

Selection Notes

Select this component when automotive certification and low power are critical. The dual-channel architecture suits applications requiring two isolated signals within a compact SOIC-8 footprint. Consider the 32 ns propagation delay for timing-sensitive designs. Verify that the 3000 Vrms isolation rating meets the safety requirements of your specific circuit topology.

Part Context

This part belongs to the ISO732x-Q1 family of automotive digital isolators. These devices are designed to replace bulky magnetic couplers in modern automotive systems. The family offers various channel configurations and insulation ratings to support diverse interface needs while maintaining small form factors suitable for space-constrained vehicle electronics.

Replacement Considerations

The ISO7321CQDRQ1 is a related variant within the same family. Verify if the specific performance characteristics or package options of the C-series variant meet your design needs as an alternative source.