SI88244BC-AS

Digital Isolators Overview

The SI88244BC-AS is a general-purpose digital isolator from Skyworks Solutions, featuring four unidirectional channels in a 20-SOIC package. It operates on a supply voltage range of 3 V to 5.5 V and supports data rates up to 100 Mb/s. The device provides an isolation voltage of 5000 Vrms with a typical common-mode transient immunity (CMTI) of 40 kV/µs. Key timing parameters include a maximum propagation delay of 18 ns, rise/fall times of 2.5 ns, and pulse width distortion of 4.5 ns. It functions within a temperature range of -40°C to +125°C.

Digital Isolators Feature Summary

• Four-channel unidirectional digital isolation architecture
• High common-mode transient immunity for noise resilience
• Capacitive coupling technology for signal transmission
• Wide operating temperature range for industrial environments

Digital Isolators Applications

• General-purpose digital isolation in industrial systems
• Isolation for embedded processors and controllers
• Signal isolation in noisy electrical environments

Digital Isolators Procurement Notes

Verify the specific suffix against official Skyworks documentation to confirm insulation voltage ratings, as variations exist within the series. Confirm package dimensions and moisture sensitivity levels prior to PCB layout. Ensure compatibility with system voltage requirements and thermal management needs. Cross-reference datasheet revisions for any parameter updates before finalizing procurement specifications.

Digital Isolators Selection Notes

Select this component when high channel density and robust isolation are required in a compact surface-mount package. Evaluate the 5000 Vrms rating against system safety standards. Consider the 100 Mb/s data rate suitability for target communication protocols. Verify that the unidirectional configuration aligns with signal flow requirements without needing bidirectional alternatives.

Digital Isolators Part Context

This part belongs to the Si88244 series of digital isolators from Skyworks Solutions. These devices utilize capacitive coupling technology to replace traditional optocouplers, offering improved performance in speed, power consumption, and reliability. The series is designed for applications requiring galvanic isolation between circuits operating at different potential levels.

Digital Isolators Replacement Considerations

SI88244BC-ISR is listed as a parameter-equivalent alternative. Verify pinout compatibility and insulation voltage specifications before substitution.