ISO7721QDWVRQ1

Overview

The ISO7721QDWVRQ1 is an automotive-grade, reinforced dual-channel digital isolator from Texas Instruments. It operates within a supply voltage range of 2.25 V to 5.5 V and supports data rates up to 100 Mb/s. The device features unidirectional signal transmission with two forward channels. Key electrical specifications include a propagation delay of 17 ns, rise and fall times of 3.9 ns, and a common-mode transient immunity of 85 kV/µs. It provides 5000 Vrms isolation voltage and functions reliably across an operating temperature range of -40°C to +125°C.

Feature Summary

• Provides reinforced galvanic isolation for high-voltage noise suppression in automotive environments
• Supports high-speed bidirectional data communication at rates up to 100 Mb/s
• Features robust electromagnetic compatibility with high common-mode transient immunity

Applications

• Automotive isolated gate driver interfaces
• Inverter control systems
• Motor drive applications
• On-board charging (OBC) systems

Procurement Notes

Verify the suffix Q1 confirms AEC-Q100 qualification for automotive use. Confirm the DW package denotes SOIC-8 with a 7.50 mm width. Ensure the VRQ1 suffix indicates reel packaging. Cross-reference the manufacturer part number against official Texas Instruments documentation to validate authenticity and revision status before procurement.

Selection Notes

Select this component when reinforced isolation and high-speed data integrity are required in automotive power electronics. The 100 Mb/s rate suits fast switching applications. Verify that the 2.25 V minimum supply voltage aligns with the system logic levels. Consider the 85 kV/µs CMTI rating for noisy environments with rapid voltage transitions.

Part Context

This device belongs to the ISO772x-Q1 family of high-speed digital isolators. It shares the SOIC-8 footprint with other members but offers specific performance metrics tailored for demanding automotive isolation tasks. The series emphasizes EMC robustness alongside standard isolation capabilities.

Replacement Considerations

ISO7721QDRQ1: Same functional specifications but utilizes a narrower SOIC-8 package (3.90 mm width). Verify PCB layout compatibility if substituting due to the difference in physical dimensions.