ISO721QDRQ1

Overview

The ISO721QDRQ1 is an automotive-grade, single-channel digital isolator from Texas Instruments. It provides a 4000Vpk isolation rating with a maximum data rate of 100Mbps and a typical propagation delay of 8ns. The device operates on a 3V to 5.5V supply and features a unidirectional signal path. It is housed in an 8-SOIC package with a 3.90mm width, designed for robust performance in harsh environments.

Feature Summary

• High-speed data transmission capability up to 100Mbps
• Automotive qualification compliant with AEC-Q100 standards
• Robust common-mode transient immunity for noise rejection

Applications

• Automotive electronic control units (ECUs)
• In-vehicle communication networks
• Battery management systems

Procurement Notes

Verify the specific suffix QDRQ1 to confirm the SOIC-8 package and tape-and-reel packaging configuration. Ensure the component meets AEC-Q100 Grade 1 requirements for your target temperature range. Cross-reference the datasheet revision date to confirm current manufacturing specifications before finalizing procurement orders.

Selection Notes

Select this component when a single-channel isolator with high-speed 100Mbps performance is required in an automotive setting. It serves as a suitable alternative to slower general-purpose isolators where bandwidth is critical. Consider the 8-SOIC footprint for space-constrained PCB layouts compared to wider packages.

Part Context

This part belongs to the ISO72x-Q1 family of automotive digital isolators. It shares the same basic isolation architecture and pinout compatibility as other members like the ISO7211QDRQ1, but differs in channel count and directionality. The family utilizes capacitive coupling technology for signal transmission across the isolation barrier.

Replacement Considerations

ISO7211QDRQ1 offers similar isolation ratings but includes bidirectional channels instead of a single unidirectional path.