ISOW7742QDFMRQ1

Overview

The ISOW7742QDFMRQ1 is an automotive-grade, reinforced digital isolator from Texas Instruments featuring four channels with a 2/2 channel configuration. It integrates high-voltage capacitive isolation technology within a 20-pin SOIC (DFM) package. The device supports data rates up to 100 Mb/s and operates on supply voltages ranging from 2.97 V to 5.5 V. Key electrical specifications include an insulation voltage of 5000 Vrms, a propagation delay of 10.7 ns, and a typical operating supply current of 280 uA. It functions reliably across a temperature range of -40°C to +125°C.

Feature Summary

• Integrates high-voltage capacitive isolation for galvanic separation
• Features low electromagnetic interference emissions design
• Includes integrated power supply capability for isolated side
• Qualified for automotive applications under AEC-Q100 standards

Applications

• Automotive battery management systems
• Inverter control circuits
• On-board charging systems
• Low-emission vehicle electronics

Procurement Notes

Verify the complete part number including the DFM suffix to confirm the specific 20-lead SOIC package variant. Ensure the Q1 suffix is present to validate AEC-Q100 automotive qualification status. Cross-reference the manufacturer's official datasheet for the latest RoHS compliance details and recommended soldering profiles before finalizing procurement orders.

Selection Notes

Select this component when reinforced isolation and low EMI are critical requirements in automotive environments. The integrated power feature simplifies design by reducing external component count compared to standard isolators. Verify that the 100 Mb/s data rate meets system timing constraints and that the 2/2 channel layout aligns with signal routing needs.

Part Context

This device belongs to the ISOW774x-Q1 family of quad-channel digital isolators. It utilizes Texas Instruments' proprietary capacitive coupling technology to provide robust signal transmission across isolation barriers. The series is specifically engineered to meet stringent automotive reliability standards while offering superior electromagnetic compatibility performance.

Replacement Considerations

Direct replacements must match the 20-lead SOIC package and 5000 Vrms insulation rating. Consider the ISO7742TADWRQ1 for similar functionality if a 16-lead SOIC package is acceptable, noting the difference in pinout and insulation voltage specifications.