ISO7741FDBQ

Overview

The ISO7741FDBQ is a quad-channel digital isolator from Texas Instruments, housed in an SSOP-16 package. It features capacitive coupling for signal isolation with a reinforced insulation voltage of 5000 Vrms. The device supports data rates up to 100 Mb/s and operates on a supply voltage range of 2.25 V to 5.5 V. It includes three forward channels and one reverse channel, with unidirectional polarity. Key electrical parameters include a propagation delay of 10.7 ns, rise/fall times of 3.9 ns, and power dissipation of 200 mW. Operating temperatures range from -55°C to +125°C.

Feature Summary

• Provides robust electromagnetic compatibility (EMC) performance for noisy industrial environments.
• Offers reinforced insulation capabilities ensuring high safety standards for galvanic isolation.
• Integrates four independent channels within a compact surface-mount package.

Applications

• Industrial automation systems requiring reliable signal transmission across isolated domains.
• Medical equipment needing certified reinforced isolation for patient safety.
• Power electronics interfaces where high-voltage noise immunity is critical.

Procurement Notes

Verify the specific suffix 'F' indicates the required EMC and insulation ratings compared to standard variants. Confirm the SSOP-16 package availability matches your PCB footprint requirements. Check moisture sensitivity levels and reflow soldering profiles during assembly planning. Ensure the component meets RoHS compliance standards for your target market regulations.

Selection Notes

Select this part when reinforced isolation and high EMC immunity are prioritized over basic isolation. Compare against ISO7741BDW if SOIC-16 packaging is preferred instead of SSOP-16. Consider the ISO7741FTADWRQ1 for automotive applications requiring AEC-Q100 qualification. Evaluate power consumption differences between variants if battery-operated constraints exist.

Part Context

This component belongs to the ISO7741 family of high-speed digital isolators. It shares functional similarities with other members like ISO7741BDW but differs in package type and specific insulation certifications. The family utilizes capacitive sensing technology to achieve low power consumption and high data integrity across isolation barriers.

Replacement Considerations

ISO7741FDBQR is available as a reel version of the same component. ISO7741BDW serves as a pin-compatible alternative in SOIC-16 packaging. Verify that any substitute maintains the 5000 Vrms reinforced insulation rating and identical channel configuration.