SI86SS51EE-AS2

Digital Isolators Overview

The SI86SS51EE-AS2 is an automotive-grade digital isolator from Skyworks Solutions, featuring four unidirectional channels with SPI compatibility and integrated reset functionality. It utilizes capacitive coupling technology to provide a reinforced isolation rating of 3.75 kVrms. The device operates within a supply voltage range of 2.25 V to 5.5 V and supports data rates up to 150 Mb/s. Key electrical parameters include a propagation delay of 9 ns, rise and fall times of 2.5 ns maximum, and a pulse width distortion of 2 ns. It functions reliably across a temperature range of -40°C to +125°C in a 16-pin SOIC package.

Digital Isolators Feature Summary

• SPI compatible interface with integrated reset control for robust communication
• Automotive-grade reliability designed for harsh operating environments
• Capacitive coupling technology ensures high isolation performance

Digital Isolators Applications

• Automotive electronic control units (ECUs)
• Inverter gate drive circuits
• Industrial automation systems requiring isolated interfaces

Digital Isolators Procurement Notes

Verify the specific suffix 'AS2' against official Skyworks documentation to confirm automotive qualification status. Ensure that the required SPI compatibility and reset features align with system design requirements before procurement. Cross-reference the datasheet for exact pinout configurations and thermal specifications to prevent integration errors during component sourcing.

Digital Isolators Selection Notes

Select this component when SPI protocol support and hardware reset capabilities are mandatory for the isolated link. Consider the 150 Mb/s data rate and 9 ns propagation delay for timing-sensitive applications. Evaluate the 3.75 kVrms isolation barrier against system safety standards. Confirm that the 16-pin SOIC package fits the available PCB footprint constraints.

Digital Isolators Part Context

This part belongs to the Si86SS5x series of automotive digital isolators. It shares the family's core capacitive coupling architecture but is distinguished by its specific SPI compatibility and reset feature set. Unlike standard isolators, it includes logic to handle chip select signals, making it suitable for complex serial communication topologies in vehicle networks.

Digital Isolators Replacement Considerations

Consult the Skyworks official replacement guide for verified substitutes. Direct replacements must maintain the 16-pin SOIC-WB package and 3.75 kVrms isolation rating. Verify that alternative parts support SPI compatibility and reset functionality if these are critical design constraints.