SI8642EA-B-YU0

Digital Isolators Overview

The SI8642EA-B-YU0 is a general-purpose digital isolator from the Si864x series, manufactured by Skyworks Solutions Inc. It features four independent channels with unidirectional signal transmission in a 16-SSOP package. The device operates on a supply voltage range of 2.5V to 5.5V and supports data rates up to 150 Mbps. Key electrical specifications include an isolation voltage of 1000 Vrms, a propagation delay of 8 ns, and a common-mode transient immunity (CMTI) of 35 kV/µs. It functions within a temperature range of -40°C to +125°C.

Digital Isolators Feature Summary

• Utilizes capacitive coupling technology for robust signal isolation without magnetic interference.
• Provides high common-mode transient immunity to maintain signal integrity in noisy environments.
• Supports bidirectional logic configuration through flexible channel polarity options.
• Integrates shutdown functionality to minimize power consumption during idle states.

Digital Isolators Applications

• Industrial automation control systems requiring galvanic isolation
• Medical equipment signal processing interfaces
• Power electronics gate drive circuits
• General-purpose digital communication links

Digital Isolators Procurement Notes

Verify the specific suffix 'YU0' against official Skyworks documentation to confirm pinout and packaging variations compared to standard 'IU' variants. Ensure compatibility with existing PCB footprints and reflow soldering profiles. Confirm RoHS compliance status for the specific manufacturing lot. Validate that the 16-SSOP package dimensions match the design constraints. Check for any recent product change notices affecting this specific part number.

Digital Isolators Selection Notes

Select this component when a 1000 Vrms isolation rating is sufficient for the application, offering a cost-effective alternative to higher-rated models. The 150 Mbps data rate suits most standard digital communication protocols. Consider the 16-SSOP package for space-constrained designs where wider SOIC packages are not feasible. Evaluate the 35 kV/µs CMTI requirement against the noise environment of the target system.

Digital Isolators Part Context

This part belongs to the Si864x family of digital isolators, which utilizes Skyworks' proprietary capacitive isolation technology. The family offers various isolation ratings and package options to suit different industrial and commercial applications. The SI8642 variant specifically provides four isolated channels, making it suitable for multi-channel data transfer requirements in compact form factors.

Digital Isolators Replacement Considerations

SI8642BA-B-IU serves as a functional equivalent with identical electrical characteristics but in a 16-SSOP tube package. SI8642EA-B-IU is another compatible option within the same series. Verify pin-to-pin compatibility and package dimensions before substitution. Ensure the replacement part meets the same AEC-Q100 qualification if automotive reliability is required.