SI8642BD-B-IS2

Digital Isolators Overview

The SI8642BD-B-IS2 is a four-channel digital isolator from the Si864x series, manufactured by Skyworks Solutions Inc. It features capacitive coupling isolation with a rated insulation voltage of 5000 Vrms. The device supports data rates up to 150 Mb/s and operates within a supply voltage range of 2.375 V to 5.5 V. Key electrical parameters include a propagation delay of 8 ns, rise/fall times of 4 ns, and a pulse width distortion of 0.2 ns. It is housed in a SOIC-Wide-16 package and functions unidirectionally across all channels.

Digital Isolators Feature Summary

• Provides high-speed signal transmission with fast common-mode transient immunity via capacitive coupling technology.
• Offers robust galvanic isolation for separating circuits with different ground potentials.
• Supports general-purpose digital signal isolation without requiring external components.

Digital Isolators Applications

• Industrial automation systems requiring isolated communication interfaces
• Medical equipment needing patient isolation barriers
• Power electronics control circuits for motor drives

Digital Isolators Procurement Notes

Verify the specific suffix 'IS2' indicates the tape-and-reel packaging format rather than tube packaging when sourcing. Confirm that the 5 kVrms insulation rating aligns with safety standards required for your application environment. Ensure compatibility with the SOIC-Wide-16 footprint during PCB layout verification.

Digital Isolators Selection Notes

Select this component when four independent isolation channels are required within a single package. Consider the 150 Mb/s data rate capability for high-speed applications. Evaluate the 5000 Vrms insulation level against system voltage requirements. Compare power consumption metrics if battery-operated constraints exist.

Digital Isolators Part Context

This part belongs to the Si864x family of digital isolators, which utilizes Skyworks' proprietary iCoupler technology. The family offers various channel counts and insulation ratings. The SI8642 variant specifically provides four channels, distinguishing it from dual-channel counterparts like the SI862x series.

Digital Isolators Replacement Considerations

Check SI8642BD-B-IS for identical functionality but different packaging. Verify SI8642ET-AS2 for automotive-grade qualification if AEC-Q100 compliance is necessary. Consult official substitution guides for pin-compatible alternatives with similar isolation voltages.