SI88241BC-ASR

Overview

The SI88241BC-ASR is a four-channel digital isolator from Skyworks Solutions, housed in a 20-SOIC package. It operates with a unidirectional polarity and supports data rates up to 100 Mb/s. The device provides an insulation voltage of 5000 Vrms and features a common-mode transient immunity of 40 kV/µs. Electrical parameters include a propagation delay of 18 ns, with rise and fall times of 2.5 ns each. Pulse width distortion is specified at 4.5 ns. It functions within a supply voltage range of 3 V to 5.5 V and operates across a temperature range of -40°C to +125°C.

Feature Summary

• Four-channel digital isolation architecture with three forward and one reverse channel
• High common-mode transient immunity for noise-resistant signal transmission
• Integrated CMOS technology for low power consumption and small form factor
• Unidirectional signal flow capability for standard interface isolation

Applications

• Industrial automation systems requiring galvanic isolation
• Programmable logic controller (PLC) input/output modules
• Medical equipment needing safety-rated signal separation
• Power electronics control circuits

Procurement Notes

Verify the specific suffix ASR against official Skyworks documentation to confirm reel packaging and moisture sensitivity level requirements. Ensure the 20-SOIC footprint matches your PCB layout constraints. Confirm that the 5000 Vrms isolation rating meets your system's safety standards. Check for RoHS compliance status in the latest datasheet revision before finalizing procurement orders.

Selection Notes

Select this component when unidirectional isolation is sufficient for the application design. The 100 Mb/s data rate suits moderate-speed communication interfaces. Consider the 20-SOIC package size for board space limitations. Verify that the 3 V to 5.5 V operating voltage aligns with the target system power rails. Ensure the thermal performance supports the intended ambient temperature conditions.

Part Context

This part belongs to the Si8824x family of digital isolators from Skyworks Solutions. These devices utilize capacitive coupling technology to provide electrical isolation between circuit sections. The family offers various channel configurations and isolation voltages to support diverse industrial and commercial applications requiring reliable signal transmission across isolated boundaries.

Replacement Considerations

Consult official Skyworks substitution guides for verified alternatives. Cross-reference pinouts and isolation ratings carefully. Verify compatibility with existing PCB footprints and thermal management strategies before implementing any substitute components.