ISO6761FQDWRQ1

Overview

The ISO6761FQDWRQ1 is an automotive-grade digital isolator featuring six channels with a 5/1 channel configuration. It utilizes capacitive coupling technology to provide robust signal isolation with a maximum data rate of 50 Mbps and a common-mode transient immunity of 100 kV/µs. The device operates within a supply voltage range of 1.71 V to 5.5 V on both sides, drawing a typical quiescent current of 8.9 mA per side. It offers an insulation voltage rating of 5000 Vrms and supports bidirectional data transmission. Key timing parameters include a propagation delay of 11 ns, rise/fall times of 4.5 ns, and pulse width distortion of 7 ns. The component is housed in a 16-pin SOIC package and functions reliably across an operating temperature range of -40°C to +125°C.

Feature Summary

• Automotive-grade qualification for reliable operation in harsh vehicle environments
• High-speed capacitive coupling providing 50 Mbps data rates and 100 kV/µs CMTI
• Bidirectional signal transmission capability across all isolated channels
• Wide operating supply voltage range supporting 1.71 V to 5.5 V logic levels

Applications

• Automotive battery management systems requiring high-voltage isolation
• Inverter control circuits in electric vehicles and hybrid powertrains
• On-board charger (OBC) communication interfaces
• General-purpose automotive electronic control unit (ECU) isolation

Procurement Notes

Verify the specific suffix 'FQDWRQ1' to ensure correct packaging and automotive grade compliance. Confirm that the SOIC-16 package matches your PCB footprint requirements. Check for moisture sensitivity level (MSL) ratings if reflow soldering processes are involved. Ensure the supplier provides traceability documentation required for automotive quality standards. Validate that the bidirectional feature aligns with your system's signal flow architecture before finalizing procurement.

Selection Notes

Select this component when bidirectional communication is required across the isolation barrier, unlike unidirectional alternatives in the same family. Consider the 5/1 channel split if one channel is needed for feedback or clock return while five carry primary data. Evaluate the 100 kV/µs CMTI against noise environments in high-power switching applications. Compare power consumption against other ISO67xx variants if thermal constraints are critical. Ensure the 5000 Vrms insulation rating meets the safety standards of your target application.

Part Context

This part belongs to Texas Instruments' ISO67xx-Q1 series of automotive digital isolators. It complements unidirectional variants like the ISO6760 by offering bidirectional functionality. The device shares similar performance metrics with the ISO6761 but differs in packaging and specific automotive qualification details. It serves as a modern replacement for traditional optocouplers in automotive networks, offering higher speed and reliability.

Replacement Considerations

The ISO6761QDWRQ1 is a related variant within the same family, potentially differing in packaging or specific qualification nuances. Verify channel directionality and insulation ratings when substituting with other ISO67xx models. Unidirectional parts like the ISO6760 cannot replace bidirectional designs without circuit redesign.