ISO7731QDWQ1

Overview

The ISO7731QDWQ1 is an automotive-grade, high-speed digital isolator from Texas Instruments. It features three independent channels with a 2/1 input-output configuration. The device utilizes capacitive coupling technology to provide electrical isolation rated at 5000 Vrms. It supports data rates up to 100 Mbps and offers a minimum common-mode transient immunity of 85 kV/µs. Operating on a supply voltage range of 2.25 V to 5.5 V, it functions within a temperature range of -40°C to +125°C. The component is housed in a 16-pin SOIC package.

Feature Summary

• Provides robust electromagnetic compatibility performance suitable for demanding automotive environments
• Utilizes silicon dioxide (SiO2) capacitive coupling technology for high reliability
• Features unidirectional signal transmission across three isolated channels
• Certified to AEC-Q100 standards for automotive application qualification

Applications

• Automotive gateway systems requiring high-speed data isolation
• Inverter control circuits in electric vehicle powertrains
• On-board charger (OBC) communication interfaces
• Battery management system (BMS) isolation barriers

Procurement Notes

Verify the specific suffix 'QDWQ1' to confirm the 16-SOIC package and tube packaging format. Ensure the component meets AEC-Q100 Grade 1 requirements for your specific automotive environment. Cross-reference the datasheet revision date to confirm technical specifications match your design constraints before finalizing procurement orders.

Selection Notes

Select this component when a triple-channel isolator with 5000 Vrms rating is required for automotive applications. It is suitable for designs needing 100 Mbps data throughput with low propagation delay. Consider the 16-SOIC footprint for PCB layout compatibility. Verify that the 2/1 channel configuration aligns with the signal flow requirements of the target circuit interface.

Part Context

This part belongs to the ISO77x-Q1 family of automotive digital isolators. It shares the same core capacitive coupling technology as other members like the ISO7730-Q1 and ISO7741-Q1. The primary distinction lies in the channel count and pin configuration. This specific model provides a balanced solution for applications requiring three isolated signals without the need for integrated isolated power supplies.

Replacement Considerations

ISO7731QDWRQ1: Same functional specifications but supplied in tape-and-reel packaging instead of tubes.