ISO7741FQDWWQ1

Overview

The ISO7741FQDWWQ1 is an automotive-grade, quad-channel digital isolator from Texas Instruments. It provides a 5700Vrms isolation rating with a data rate of 100Mbps and common-mode transient immunity (CMTI) of 85kV/µs. The device operates on a single supply voltage ranging from 2.25V to 5.5V. It features a wide-body 16-SOIC package (DWW) with a 0.551-inch (14.00mm) width, designed for high-density PCB layouts. The component supports AEC-Q100 qualification and functions within a temperature range of -40°C to 125°C.

Feature Summary

• Provides robust signal isolation with a 5700Vrms rating suitable for demanding automotive environments.
• Features four independent channels with a 100Mbps data rate for high-speed communication.
• Offers high common-mode transient immunity of 85kV/µs to maintain signal integrity in noisy conditions.
• Utilizes a wide-body 16-SOIC package to accommodate larger creepage and clearance distances.

Applications

• Automotive electronic control units (ECUs)
• Inverter gate drive circuits
• Industrial communication interfaces

Procurement Notes

Verify the specific suffix 'DWQ1' or 'DWWQ1' against your bill of materials, as these denote distinct physical packages. Confirm that the 14.00mm wide-body footprint matches your PCB layout requirements. Ensure the design accounts for the 5700Vrms isolation rating rather than lower-rated variants. Check for end-of-life status if long-term production stability is required.

Selection Notes

Select this component when a wider SOIC footprint is acceptable to achieve higher isolation creepage distances. Compare against standard-width SOIC options if board space is constrained, noting that narrower packages may offer lower isolation ratings. Consider the 100Mbps speed limit for bandwidth requirements. Verify that the 2.25V to 5.5V supply range aligns with the system's logic levels.

Part Context

This part belongs to the ISO774x-Q1 family of automotive digital isolators. It utilizes capacitive coupling technology for signal transmission across the isolation barrier. The device is designed to replace optocouplers in modern systems, offering improved performance and reliability. It is part of Texas Instruments' portfolio of solutions for isolated communication in harsh environments.

Replacement Considerations

ISO7741QDWRQ1 is a manufacturer-recommended alternative, though it uses a standard-width SOIC package instead of the wide-body version.

FAQ

What is the maximum operating voltage for the ISO7741FQDWWQ1?

The device supports a supply voltage range from 2.25V to 5.5V.

Does this component include an integrated isolated power supply?

No, the ISO7741FQDWWQ1 is a digital isolator without an integrated isolated power source.