ISO7721QDRQ1

Overview

The ISO7721QDRQ1 is an automotive-grade, reinforced dual-channel digital isolator from Texas Instruments. It features capacitive coupling technology with a data rate of 100 Mb/s and a common-mode transient immunity (CMTI) of 85 kV/µs. The device operates on a supply voltage range of 2.25 V to 5.5 V and provides 3000 Vrms isolation voltage. It is housed in an 8-SOIC package with a width of 3.90 mm. The component supports unidirectional signal transmission with one forward and one reverse channel. It is qualified under AEC-Q100 standards for operation between -40°C and +125°C.

Feature Summary

• Provides reinforced insulation capabilities suitable for demanding automotive environments
• Utilizes capacitive coupling technology for high-speed digital signal transmission
• Features high common-mode transient immunity to maintain signal integrity in noisy conditions

Applications

• Automotive electronic control units requiring robust galvanic isolation
• Industrial communication interfaces needing high-speed data transfer
• Power conversion systems utilizing isolated gate drivers

Procurement Notes

Verify the specific suffix QDRQ1 to confirm the SOIC-8 tape-and-reel packaging configuration. Ensure the design accounts for the AEC-Q100 qualification requirements if deployed in automotive applications. Confirm that the 3000 Vrms reinforced isolation rating meets the safety standards of the target system. Check for RoHS3 compliance status during procurement to align with environmental regulations.

Selection Notes

Select this component when reinforced isolation is required for dual-channel bidirectional or unidirectional data links. It is suitable for designs needing 100 Mb/s throughput with high noise immunity. Consider the 8-SOIC footprint for space-constrained PCB layouts. Verify that the 2.25 V to 5.5 V supply range matches the logic levels of the interfacing circuits.

Part Context

This part belongs to the ISO7721-Q1 family of automotive digital isolators. It shares architectural similarities with other members like the ISO7721FQDRQ1 but differs in packaging and specific qualification details. The series is designed to replace optocouplers in high-speed applications, offering superior performance and reliability for modern electronic systems.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.