SI86SO21BE-IS4

Digital Isolators Overview

The SI86SO21BE-IS4 is a dual-channel digital isolator from the Si86SO2x series, manufactured by Skyworks Solutions. It utilizes capacitive coupling technology to provide electrical isolation with a rated insulation voltage of 6000 Vrms. The device supports unidirectional signal transmission at data rates up to 150 Mb/s and features inverting outputs. It operates within a supply voltage range of 2.25 V to 5.5 V and is housed in an SSO-8 package. The component is qualified for automotive applications under AEC-Q100 standards and functions reliably across an extended temperature range from -40°C to +125°C.

Digital Isolators Feature Summary

• Provides high-speed digital signal isolation using capacitive coupling technology
• Features inverting output logic for specific interface requirements
• Supports wide supply voltage operation without requiring start-up initialization
• Automotive-grade qualification ensures reliability in demanding environments

Digital Isolators Applications

• Automotive electronic control units requiring galvanic isolation
• Industrial communication interfaces such as CAN and LIN bus systems
• Power conversion circuits needing feedback isolation
• Medical equipment requiring patient safety isolation barriers

Digital Isolators Procurement Notes

Verify the specific suffix IS4 corresponds to the required tube packaging configuration when ordering. Confirm that the inverting output polarity aligns with the system design requirements, as this variant differs from non-inverting counterparts. Ensure compatibility with the target PCB footprint for the SSO-8 package. Check for any recent product change notices regarding material composition or manufacturing site updates.

Digital Isolators Selection Notes

Select this component when bidirectional isolation is not required and inverting logic is acceptable. Compare against the SI86S621FE-IS4 if non-inverting outputs are necessary for the same channel count and isolation rating. Consider the SI8621BT-IS for applications requiring a wider SOIC-16 package instead of the compact SSO-8 form factor. Evaluate power consumption differences between variants if thermal management is critical.

Digital Isolators Part Context

This part belongs to the Si86SO2x family of automotive-grade digital isolators. These devices are designed to replace traditional magnetic couplers and optocouplers in modern electronic systems. The family offers improved performance metrics including higher common-mode transient immunity and lower propagation delay compared to legacy technologies.

Digital Isolators Replacement Considerations

SI86S621FE-IS4 serves as a direct functional substitute with identical specifications except for non-inverting output polarity.