ISO7721FQDRQ1

Overview

The ISO7721FQDRQ1 is an automotive-grade, reinforced dual-channel digital isolator from Texas Instruments. It features a 3000 Vrms isolation rating and supports data rates up to 100 Mb/s with a propagation delay of 17 ns. The device operates on a supply voltage range of 2.25 V to 5.5 V, consuming 7.3 mA of quiescent current. It offers a common-mode transient immunity of 85 kV/µs and functions within a temperature range of -40°C to +125°C. Packaged in an 8-SOIC format, it is AEC-Q100 qualified for robust performance.

Feature Summary

• Reinforced insulation design providing high reliability for automotive applications
• Capacitive coupling technology enabling bidirectional signal transmission
• High common-mode transient immunity ensuring stable operation in noisy environments

Applications

• Automotive engine control units
• Inverter gate drive circuits
• Industrial communication interfaces

Procurement Notes

Verify the specific suffix 'FQDRQ1' to confirm the SOIC-8 package, tape-and-reel packaging, and automotive qualification status. Ensure compatibility with the target system's voltage levels and thermal requirements before integration. Cross-reference the manufacturer datasheet for updated mechanical drawings and handling instructions.

Selection Notes

Select this component when reinforced isolation and automotive certification are required. It is suitable for designs needing high-speed data transfer across isolation barriers. Consider the 8-SOIC footprint for PCB layout constraints. Evaluate power consumption against system battery life requirements.

Part Context

This part belongs to the ISO772x-Q1 family of high-performance digital isolators. These devices are designed to replace bulky magnetic couplers in modern electronic systems. They provide enhanced safety standards while maintaining compact form factors for space-constrained automotive and industrial applications.

Replacement Considerations

Direct substitutes include other parts within the ISO772x-Q1 series, such as the ISO7721QDRQ1, provided package and electrical specifications match. Verify pinout compatibility and isolation ratings before swapping components in existing designs.

FAQ

What is the maximum data rate supported by this isolator?

The ISO7721FQDRQ1 supports data rates up to 100 Mb/s.

Is this device qualified for automotive use?

Yes, it is AEC-Q100 qualified for Grade 1 operation (-40°C to +125°C).