ISO6740FQDWRQ1

Overview

The ISO6740FQDWRQ1 is an automotive-grade, general-purpose quad-channel digital isolator from Texas Instruments. It features four forward channels with no reverse channels, operating at a data rate of 50 Mbps. The device provides reinforced isolation with an insulation voltage of 5000 Vrms and a common-mode transient immunity of 100 kV/µs. It supports logic voltages down to 1.8 V and operates within a supply range of 1.71 V to 5.5 V. Packaged in a 16-pin SOIC (DW) format, it functions reliably across a temperature range of -40°C to +125°C.

Feature Summary

• Provides reinforced electrical isolation for automotive applications
• Supports unidirectional signal transmission across four independent channels
• Ensures high noise immunity with specified common-mode transient performance

Applications

• Automotive electronic control units requiring galvanic isolation
• Isolated communication interfaces in vehicle networks
• Safety-critical systems needing reinforced barrier protection

Procurement Notes

Verify the specific suffix Q1 confirms AEC-Q100 qualification status. Confirm the DW package variant matches the required footprint. Ensure the F suffix aligns with the intended thermal or mechanical specifications. Cross-reference the manufacturer part number against official TI documentation to avoid counterfeit components. Validate that the order quantity meets distributor reel requirements.

Selection Notes

Select this component when four isolated bidirectional paths are not required, as it lacks reverse channels. Choose this part for designs needing 50 Mbps throughput with lower power consumption than higher-speed alternatives. Consider the 1.8 V logic support if interfacing with low-voltage microcontrollers. Verify that the SOIC-16 package dimensions fit the PCB layout constraints.

Part Context

This device belongs to the ISO674x-Q1 family of general-purpose automotive digital isolators. It shares the SOIC-16 package form factor with other members like the ISO6742 and ISO6743 series. The family focuses on providing cost-effective isolation solutions for standard automotive protocols and sensor interfaces.

Replacement Considerations

ISO6742FQDWRQ1 offers two forward and two reverse channels. ISO6743FQDWRQ1 provides three forward and one reverse channel. Both maintain similar speed and isolation ratings but differ in channel configuration.