SI88421BC-ASR

Digital Isolators Overview

The SI88421BC-ASR is a general-purpose digital isolator from Skyworks Solutions, housed in a 16-SOIC package. It features two unidirectional channels with a data rate of 100 Mb/s and an insulation voltage of 5000 Vrms. The device operates on a supply voltage between 3 V and 5.5 V, drawing 8 mA of working power current. Key timing parameters include an 18 ns propagation delay, 2.5 ns rise/fall times, and 4.5 ns pulse width distortion. It supports a wide operating temperature range from -40°C to +125°C without a shutdown function.

Digital Isolators Feature Summary

• Provides galvanic isolation for bidirectional signal transmission across high-voltage barriers
• Integrates capacitive coupling technology for robust noise immunity
• Supports high common-mode transient immunity for reliable operation in noisy environments

Digital Isolators Applications

• Industrial automation control systems
• Medical equipment signal isolation
• Power electronics gate drive interfaces

Digital Isolators Procurement Notes

Verify the specific suffix ASR against official Skyworks documentation to confirm reel packaging and tape specifications. Ensure the component meets RoHS compliance requirements for your region. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit sources. Confirm that the SOIC-16 footprint matches your PCB design constraints before finalizing procurement orders.

Digital Isolators Selection Notes

Select this component when unidirectional isolation is required for two independent signal paths. The 100 Mb/s speed suits moderate-speed digital communication protocols. Consider the 16-pin SOIC package for standard surface-mount assembly processes. Evaluate the 5000 Vrms isolation rating against system safety standards. Verify thermal management needs given the 125°C maximum junction temperature capability.

Digital Isolators Part Context

This part belongs to the Si8842x series of digital isolators designed for general-purpose applications. It utilizes Skyworks' proprietary capacitive isolation technology. The series offers various channel configurations and package options to suit different board space requirements. It serves as a replacement for traditional optocouplers in modern industrial designs.

Digital Isolators Replacement Considerations

Check Skyworks datasheets for direct pin-compatible alternatives within the Si8842x family. Verify if variants like SI88421BD-ASR offer identical electrical characteristics with different packaging or testing criteria. Ensure any substitute maintains the same 5000 Vrms isolation rating and 100 Mb/s data rate.