SI88444BC-ISR

Overview

The SI88444BC-ISR is a Skyworks Solutions digital isolator featuring four unidirectional channels in a 20-SOIC package. It operates on a 3 V to 5.5 V supply with a maximum data rate of 100 Mb/s and an insulation voltage of 5000 Vrms. The device exhibits a propagation delay of 18 ns, rise/fall times of 2.5 ns, and pulse width distortion of 4.5 ns. It supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Provides high-speed signal isolation via capacitive coupling technology for reliable data transmission across isolation barriers.

Applications

• Industrial automation systems requiring galvanic isolation
• Power electronics control interfaces
• General-purpose digital communication links

Procurement Notes

Verify the specific suffix 'BC' against official Skyworks documentation to confirm exact electrical characteristics and pinout configuration. Ensure the SOIC-20 package dimensions match the target PCB footprint. Confirm that the unidirectional channel arrangement aligns with the system's signal flow requirements before finalizing procurement.

Selection Notes

Select this component when a 5000 Vrms isolation rating and 100 Mb/s data throughput are required. The 20-SOIC form factor suits space-constrained designs needing multiple isolated channels. Verify thermal management capabilities for operation within the specified -40°C to +125°C ambient range.

Part Context

This part belongs to the Si8844x series of general-purpose digital isolators from Skyworks Solutions. It utilizes proprietary capacitive coupling technology to achieve robust isolation performance without the limitations of traditional optical components.

FAQ

What is the common-mode transient immunity (CMTI) specification?

The datasheet indicates a CMTI of 40 kV/µs.

Does this device include an integrated DC-DC converter?

No, the SI88444BC-ISR is a standalone digital isolator without an integrated power converter.