ISO7761FQDBQQ1

Overview

The ISO7761FQDBQQ1 is a Texas Instruments automotive-grade digital isolator featuring six channels with a 5/1 input-output configuration. It utilizes capacitive coupling technology to provide reinforced isolation of 3000 Vrms. The device supports data rates up to 100 Mbps and offers a propagation delay of 11 ns. It operates within a supply voltage range of 2.25 V to 5.5 V and functions across an extended temperature range from -40°C to +125°C. Packaged in a 16-SSOP format, it meets AEC-Q100 qualification standards for robustness.

Feature Summary

• Provides reinforced galvanic isolation via capacitive coupling technology
• Configured with five forward channels and one reverse channel for asymmetric signal routing
• Qualified for automotive applications under the AEC-Q100 standard
• Supports high-speed data transmission at rates up to 100 Mbps

Applications

• Automotive electronic control units requiring isolated communication interfaces
• On-board charging systems for electric and hybrid vehicles
• Industrial motor drives with isolated gate driver feedback loops
• Power conversion circuits needing high common-mode transient immunity

Procurement Notes

Verify the specific suffix 'QQ1' indicates tube packaging rather than tape-and-reel formats when sourcing components. Confirm that the part number aligns with current availability status, as some variants in this series may be subject to obsolescence notices. Ensure compatibility with existing PCB footprints designed for 16-SSOP packages. Cross-reference the datasheet revision history to confirm electrical characteristics match design requirements before finalizing procurement orders.

Selection Notes

Select this component when asymmetric channel counts are required, specifically five inputs and one output. Consider the 11 ns propagation delay and 100 Mbps speed for timing-sensitive automotive networks. Evaluate the 3000 Vrms isolation barrier against system voltage requirements. Verify that the SSOP package size fits within the constrained board space available for the target application design constraints.

Part Context

This device belongs to the ISO776x-Q1 family of high-speed digital isolators designed for automotive environments. It shares architectural similarities with other members like the ISO7760 but differs in channel configuration. The family emphasizes robust electromagnetic compatibility and low power consumption. It serves as a critical interface component between microcontrollers and isolated peripheral circuits in modern vehicle architectures.

Replacement Considerations

The ISO7761FQDBQRQ1 is a direct functional substitute offering identical specifications but packaged in tape-and-reel format instead of tubes. Designers must verify that their assembly equipment supports the alternative packaging type. No changes to circuit layout or electrical performance are expected when switching between these two packaging variants.