SI86SO21EC-AS

Digital Isolators Overview

The SI86SO21EC-AS is a digital isolator from the Si86SO2x series, manufactured by Skyworks Solutions Inc. It features two unidirectional channels with inverting outputs and capacitive coupling isolation technology. The device supports data rates up to 150 Mbps and provides an insulation voltage of 3750 Vrms. It operates within a supply voltage range of 2.5 V to 5.5 V and is rated for automotive applications. The component is housed in an SOIC-NB-8 package and functions reliably across a temperature range of -40°C to +125°C.

Digital Isolators Feature Summary

• Provides galvanic isolation via capacitive coupling for signal integrity
• Supports high-speed data transmission up to 150 Mbps without start-up initialization
• Designed for automotive environments with extended temperature ratings

Digital Isolators Applications

• Automotive gate driver interfaces
• Industrial communication bus isolation
• Motor control systems requiring bidirectional signal transfer

Digital Isolators Procurement Notes

Verify the specific suffix 'AS' against official Skyworks documentation to confirm it denotes the standard non-inverting or specific variant configuration, as suffixes often indicate packaging or pinout variations. Ensure the selected part matches the required output polarity (inverting vs. non-inverting) for the target circuit design. Cross-reference the RoHS status and moisture sensitivity level with current manufacturing notices before procurement.

Digital Isolators Selection Notes

Select this component when automotive-grade reliability and high common-mode transient immunity are required. The 3750 Vrms isolation rating suits applications with significant potential differences between ground domains. Consider the inverting output characteristic if signal phase inversion is acceptable or required by the downstream logic. Verify that the 150 Mbps speed meets the system's bandwidth requirements without excessive jitter.

Digital Isolators Part Context

This device belongs to the Si86SO2x family of automotive digital isolators. These components utilize Skyworks' proprietary silicon dioxide (SiO2) isolation technology. The family is designed to replace traditional magnetic isolators in space-constrained automotive and industrial designs, offering higher integration and lower power consumption compared to legacy solutions.

Digital Isolators Replacement Considerations

Check for direct substitutes within the Si86SO2x family, such as SI86SO21EC-IS or SI86SO20EC-ASR, ensuring pin compatibility and identical isolation ratings. Verify that any replacement maintains the same automotive qualification standards and operating temperature range.