ISO7761QDBQRQ1

Overview

The ISO7761QDBQRQ1 is an automotive-grade, six-channel digital isolator from Texas Instruments' ISO776x-Q1 series. It features a 5/1 channel configuration with unidirectional signal paths and capacitive coupling technology. The device supports data rates up to 100 Mbps and provides 3000 Vrms isolation voltage per UL 1577 standards. Key electrical parameters include a maximum propagation delay of 11 ns, pulse width distortion of 0.4 ns, and typical rise/fall times of 3.9 ns. It operates on a supply voltage range of 2.25 V to 5.5 V and is housed in a 16-SSOP package.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for robust reliability
• High common-mode transient immunity ensuring signal integrity in noisy environments
• Reinforced insulation design supporting safety-standard requirements
• Six-channel architecture with five forward and one reverse channel

Applications

• Automotive gateway systems requiring high-speed isolated communication
• Inverter control circuits in electric vehicle powertrains
• Battery management system (BMS) isolated interfaces
• Charging station controller signal isolation

Procurement Notes

Verify the specific suffix QDBQRQ1 to confirm the 16-SSOP package and automotive grade. Ensure compatibility with the target PCB footprint and reflow soldering profile. Confirm that the 3000Vrms rating meets the application's isolation requirements rather than higher-rated variants like the DW package. Check for RoHS compliance status as specified in the latest datasheet revision.

Selection Notes

Select this component when a six-channel isolator with asymmetric 5/1 directionality is required for automotive applications. It is suitable for designs needing 100 Mbps speed with reinforced insulation. Compare against ISO7760QDBQRQ1 if only unidirectional channels are needed, or ISO7762QDBQRQ1 if bidirectional feedback is necessary. Consider the SSOP package constraints for board space limitations.

Part Context

This part belongs to the ISO776x-Q1 family of high-performance digital isolators designed for harsh electromagnetic environments. The family utilizes capacitive coupling technology to provide galvanic isolation without magnetic components. The ISO7761 variant specifically addresses applications requiring multiple output channels with a single return path, optimizing pin count and board area in complex automotive electronic control units.

Replacement Considerations

ISO7760QDBQRQ1 serves as a parameter-equivalent substitute for unidirectional-only configurations.