ISO7731FQDWQ1

Overview

The ISO7731FQDWQ1 is a high-speed, robust-EMC reinforced triple-channel digital isolator from Texas Instruments. It features 5000Vrms isolation voltage and supports data rates up to 100Mbps. The device utilizes capacitive coupling technology for signal transmission across the isolation barrier. It operates within a supply voltage range of 2.25V to 5.5V and is qualified under AEC-Q100 standards for automotive applications. The component is housed in a 16-SOIC package with a width of 7.50mm.

Feature Summary

• Provides reinforced insulation capabilities for enhanced system safety
• Features high common-mode transient immunity for reliable operation in noisy environments
• Supports unidirectional signal transmission across three isolated channels

Applications

• Automotive electronic control units requiring galvanic isolation
• Industrial communication interfaces such as CAN and LIN bus systems
• Medical equipment needing reinforced isolation barriers

Procurement Notes

Verify the specific suffix QDWQ1 to confirm the automotive grade qualification and SOIC package variant. Ensure compatibility with existing PCB footprints for the 16-pin wide SOIC configuration. Check for end-of-life status or recommended new designations if sourcing for long-term production. Confirm moisture sensitivity level requirements during assembly processes.

Selection Notes

Select this component when triple-channel isolation is required with high EMC robustness. It is suitable for designs needing 5000Vrms basic or reinforced isolation ratings. Consider the 100Mbps data rate capability for high-speed digital signals. Evaluate the 16-SOIC package constraints against available board space.

Part Context

This part belongs to the ISO773x-Q1 family of digital isolators designed for automotive and industrial markets. It offers a compact solution for replacing bulky magnetic couplers in modern electronic systems. The series emphasizes low power consumption and high reliability under harsh operating conditions.

Replacement Considerations

ISO7731FQDWRQ1 is a manufacturer-recommended alternative with identical electrical specifications but different packaging.