SI8621EC-AS

Digital Isolators Overview

The SI8621EC-AS is a general-purpose digital isolator from the Si862x series, manufactured by Skyworks Solutions Inc. It features two unidirectional channels with capacitive coupling technology, supporting data rates up to 150 Mbps. The device operates on a supply voltage range of 2.5 V to 5.5 V and provides an isolation voltage of 3750 Vrms. It is housed in an 8-SOIC package (0.154 inch width) and functions within a temperature range of -40°C to +125°C. Key electrical characteristics include a typical propagation delay of 8 ns and a common-mode transient immunity of 35 kV/µs.

Digital Isolators Feature Summary

• Capacitive coupling technology for high-speed signal transmission
• Unidirectional channel configuration for general-purpose isolation
• Wide operating supply voltage compatibility
• High common-mode transient immunity

Digital Isolators Applications

• General-purpose digital isolation in industrial systems
• Isolation for microcontroller interfaces
• Signal isolation in automotive applications

Digital Isolators Procurement Notes

Verify the specific suffix 'AS' against official Skyworks documentation to confirm package type and tape/reel specifications. Ensure the component meets required insulation ratings for your application safety standards. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit parts. Confirm RoHS compliance status through the latest datasheet or compliance declaration.

Digital Isolators Selection Notes

Select this component when unidirectional isolation is sufficient for the design. The 8-SOIC package offers a compact footprint suitable for space-constrained PCB layouts. Consider the 150 Mbps data rate limit for high-speed communication needs. Verify that the 3750 Vrms isolation rating aligns with system safety requirements. Check thermal performance within the specified operating temperature range.

Digital Isolators Part Context

The SI8621EC-AS belongs to the Si862x family of digital isolators, which utilizes Skyworks' proprietary capacitive isolation technology. This family is designed for robust performance in noisy environments. The EC-AS variant specifically denotes the 8-SOIC package configuration. It serves as a replacement for traditional optocouplers in many applications, offering faster speeds and lower power consumption.

Digital Isolators Replacement Considerations

Check Skyworks documentation for direct pin-compatible alternatives within the Si862x series. Verify if variants like SI8621EC-B-IS offer different packaging or qualification levels. Ensure any substitute maintains the same channel count and isolation voltage ratings.