SI8661BC-B-IS1R

Digital Isolators Overview

The SI8661BC-B-IS1R is a six-channel digital isolator from Skyworks Solutions, featuring five forward and one reverse unidirectional channel. It utilizes capacitive coupling technology to provide an insulation voltage of 3750 Vrms. The device supports data rates up to 150 Mb/s with a typical propagation delay of 8 ns. It operates within a supply voltage range of 2.375 V to 5.5 V and functions reliably across a temperature range of -40°C to +125°C. Packaged in a narrow SOIC-16 format, it is designed for robust signal isolation in demanding electronic environments.

Digital Isolators Feature Summary

• Provides galvanic isolation via high-reliability capacitive coupling technology
• Features asymmetric channel configuration with five forward and one reverse path
• Ensures signal integrity through low propagation delay and high common-mode transient immunity
• Supports wide operating voltage ranges for flexible system integration

Digital Isolators Applications

• Industrial automation control systems requiring multi-channel isolation
• Automotive electronics meeting AEC-Q100 qualification standards
• Power conversion circuits involving gate drive isolation
• Medical equipment needing reinforced safety isolation barriers

Digital Isolators Procurement Notes

Verify the specific suffix IS1R corresponds to the reel packaging configuration when ordering. Confirm that the automotive grade designation aligns with your project's reliability requirements. Ensure the narrow SOIC-16 footprint matches your PCB layout constraints. Cross-reference the datasheet for any recent product change notices affecting assembly or sourcing parameters.

Digital Isolators Selection Notes

Choose this component when high channel count isolation is required in a compact surface-mount package. The unidirectional nature suits applications where signal flow is strictly one-way. Consider the 3750 Vrms rating for basic or reinforced isolation needs depending on system design. Evaluate the 150 Mb/s speed against your bus requirements to ensure adequate performance margins.

Digital Isolators Part Context

This part belongs to the Si86xx family of digital isolators, which are known for replacing traditional optocouplers. The Si8661 variant specifically offers six channels, providing a cost-effective solution for complex isolation tasks. The BC suffix indicates the automotive grade version, ensuring compliance with strict industry reliability standards compared to standard industrial grades.

Digital Isolators Replacement Considerations

Direct substitutes include other parts within the Si866x family such as SI8661BC-AS1 for tube packaging or SI8661BB-B-IS1R for lower voltage ratings. Verify pin compatibility and insulation voltage levels before swapping. Check if the reverse channel requirement can be met by alternative configurations.