ISO7741FQDBQQ1

Overview

The ISO7741FQDBQQ1 is an automotive-grade, quad-channel digital isolator from Texas Instruments. It features a 3/1 channel configuration with unidirectional signal flow and capacitive coupling technology. The device supports data rates up to 100 Mb/s and offers a propagation delay of 10.7 ns. It operates within a supply voltage range of 2.25 V to 5.5 V, consuming typical currents of 8.6 mA or 18 mA depending on the side. The component provides robust isolation with an insulation voltage of 5000 Vrms and high common-mode transient immunity of 85 kV/µs. It is housed in a 16-pin SOIC package and meets AEC-Q100 qualification standards for automotive applications.

Feature Summary

• Automotive-qualified reinforced digital isolation with robust EMC performance
• Quad-channel architecture providing three forward and one reverse channel
• High-speed data transmission capability at 100 Mb/s with low propagation delay
• Capacitive coupling isolation ensuring electrical safety and noise immunity

Applications

• Automotive electronic control units requiring galvanic isolation
• Inverter gate drive circuits in electric vehicles
• On-board charging systems for hybrid and electric vehicles
• Battery management systems in automotive environments

Procurement Notes

Verify that the specific suffix Q1 confirms AEC-Q100 automotive qualification status. Ensure the DBQ package variant matches the required PCB footprint. Confirm the manufacturer source is authorized to guarantee component authenticity and traceability for automotive safety-critical designs.

Selection Notes

Select this component when automotive reliability and reinforced isolation are mandatory. The 3/1 channel layout suits applications needing multiple outputs from a single input. Consider the 100 Mb/s speed limit and 5000 Vrms isolation rating against system requirements. Evaluate the SOIC-16 package constraints for thermal and spatial limitations.

Part Context

This part belongs to the ISO7741 family of high-speed digital isolators. It shares core specifications with non-automotive variants but includes additional qualification testing for automotive use. The family utilizes Texas Instruments' silicon dioxide capacitive isolation technology to provide reliable signal transmission across isolation barriers.

Replacement Considerations

ISO7741FQDWRQ1: Alternative reel packaging option with identical electrical characteristics.

FAQ

What is the common-mode transient immunity (CMTI) of the ISO7741FQDBQQ1?

The device provides a common-mode transient immunity of 85 kV/µs.

Does the ISO7741FQDBQQ1 include a shutdown function?

No, the ISO7741FQDBQQ1 does not feature a shutdown pin; it operates continuously once powered.