ISO6740QDWRQ1

Overview

The ISO6740QDWRQ1 is an automotive-grade, quad-channel digital isolator from Texas Instruments. It features unidirectional signal transmission with a data rate of 50 Mb/s and 5000 Vrms isolation voltage using capacitive coupling. The device operates within a supply voltage range of 1.71 V to 5.5 V and supports temperatures from -40°C to +125°C. Packaged in a SOIC-16 surface-mount format, it exhibits a propagation delay of 11 ns and does not include a shutdown function.

Feature Summary

• Provides four independent unidirectional signal channels for robust data isolation
• Utilizes capacitive coupling technology to achieve high-voltage isolation
• Complies with AEC-Q100 standards for automotive reliability requirements

Applications

• Automotive CAN bus communication systems
• General-purpose automotive digital isolation interfaces
• High-noise industrial environments requiring galvanic isolation

Procurement Notes

Verify the specific suffix QDWRQ1 matches the required SOIC-16 package and automotive qualification level. Confirm that the unidirectional channel configuration aligns with the system design, as bidirectional variants exist within the family. Ensure the supplier provides documentation confirming AEC-Q100 certification for the intended automotive application context.

Selection Notes

Select this component when four isolated channels are required at 50 Mbps speeds. It is suitable for designs needing 5000 Vrms isolation without bidirectional functionality. Consider power consumption differences compared to higher-speed alternatives if energy efficiency is critical. Verify compatibility with the target logic voltage levels ranging from 1.71 V to 5.5 V.

Part Context

This part belongs to the ISO6740 series of automotive digital isolators. It shares the SOIC-16 footprint and basic isolation architecture with other members like the ISO6760QDWRQ1, which offers six channels. The series focuses on providing reliable signal transmission across isolation barriers in demanding automotive electrical environments.

Replacement Considerations

ISO6740DRQ1: Non-automotive grade version with identical pinout and specifications.