ISO7742QDWRQ1

Overview

The ISO7742QDWRQ1 is an automotive-grade digital isolator from Texas Instruments, featuring four independent channels in a 16-pin SOIC package. It supports bidirectional or unidirectional data transmission at speeds up to 100 Mb/s with a propagation delay of 10.7 ns. The device offers reinforced insulation voltage of 5000 Vrms and high common-mode transient immunity. Operating within a temperature range of -40°C to +125°C, it draws 13.4 mA supply current and complies with AEC-Q100 standards for automotive reliability.

Feature Summary

• Provides robust electromagnetic compatibility (EMC) performance suitable for demanding automotive environments
• Features capacitive coupling technology for reliable signal isolation across the barrier
• Supports flexible channel configurations including bidirectional and unidirectional modes

Applications

• Automotive gateway systems requiring isolated communication interfaces
• Inverter control circuits in electric vehicle powertrains
• Battery management system (BMS) monitoring and control
• Charging station communication modules

Procurement Notes

Verify that the component carries the Q1 suffix indicating AEC-Q100 qualification for automotive use. Confirm the DWR suffix corresponds to the SOIC-16 tape-and-reel packaging format. Ensure the datasheet revision matches the specific design requirements for insulation ratings and EMC robustness before finalizing procurement specifications.

Selection Notes

Select this component when four isolated channels are required for automotive applications with high noise immunity needs. Compare against the ISO7742TA variant if lower insulation voltage is acceptable but enhanced thermal performance is prioritized. Consider the ISO7740 variant if unidirectional transmission only is sufficient for the specific circuit topology.

Part Context

This part belongs to the ISO774x-Q1 family of automotive digital isolators. It complements other members like the ISO7740 and ISO7741 by offering a quad-channel configuration. The series is designed to replace magnetic isolators in automotive networks, providing smaller footprint and lower power consumption while maintaining high reliability standards.

Replacement Considerations

The ISO7742TADWRQ1 is a related variant within the same family, distinguished primarily by its insulation voltage rating. Verify specific insulation requirements when substituting between these parts to ensure compliance with safety standards.