ISO7761FDBQ

Overview

The ISO7761FDBQ is a robust EMC six-channel digital isolator from Texas Instruments, housed in a 16-lead SSOP package. It features unidirectional signal transmission with five forward channels and one reverse channel. The device supports data rates up to 100 Mb/s and operates within a supply voltage range of 2.25 V to 5.5 V. Key electrical parameters include a propagation delay of 11 ns, rise/fall times of 3.9 ns, and pulse width distortion of 0.4 ns. It provides reinforced isolation with an insulation voltage of 3000 Vrms and high common-mode transient immunity. Operating temperatures range from -55°C to +125°C.

Feature Summary

• Provides reinforced isolation for safety-critical applications
• Capacitive coupling technology ensures robust EMC performance
• Unidirectional architecture simplifies circuit design

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced safety barriers
• Power metering and energy management circuits

Procurement Notes

Verify the specific suffix 'Q' indicates automotive qualification status if required by your application standards. Confirm that the SSOP-16 package dimensions match your PCB footprint constraints. Ensure compatibility with the 2.25 V to 5.5 V supply voltage range for both input and output sides. Check for moisture sensitivity level requirements during storage and reflow soldering processes.

Selection Notes

Select this component when reinforced isolation is mandated over basic isolation. Consider the 100 Mb/s data rate limit for high-speed communication needs. Evaluate the 3000 Vrms insulation rating against system voltage requirements. The unidirectional nature requires separate components for bidirectional signals.

Part Context

This part belongs to the ISO7761 family of high-speed digital isolators. It shares architectural similarities with other members like ISO7761FSDBQR but differs in isolation type and qualification. The family utilizes capacitive coupling for signal transmission across the isolation barrier.

Replacement Considerations

ISO7761FDBQR serves as a reel-based alternative with identical electrical specifications.