SI88440EC-AS

Digital Isolators Overview

The SI88440EC-AS is a four-channel unidirectional digital isolator from Skyworks Solutions, housed in an SOIC-20 package. It operates on a supply voltage between 3 V and 5.5 V with a maximum current of 13.3 mA. The device supports data rates up to 100 Mb/s and provides 5000 Vrms isolation voltage. Key timing parameters include an 18 ns propagation delay, 2.5 ns rise/fall times, and 4.5 ns pulse width distortion. It functions within a temperature range of -40°C to +125°C without a shutdown feature.

Digital Isolators Feature Summary

• Integrates a fully integrated secondary sensing feedback-controlled DC-DC converter for high-speed isolation
• Provides four unidirectional signal channels for general-purpose digital isolation
• Supports data transmission rates up to 100 Mb/s with low propagation delay

Digital Isolators Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing high-voltage safety isolation
• Power electronics control circuits

Digital Isolators Procurement Notes

Verify the specific suffix AS against official Skyworks documentation to confirm pinout and electrical characteristics match design requirements. Confirm RoHS compliance status through manufacturer datasheets. Check current availability as distribution may be restricted in certain regions. Ensure ESD handling protocols are followed during SMD/SMT assembly due to moisture sensitivity classification.

Digital Isolators Selection Notes

Select this component when four unidirectional isolated channels are required alongside an integrated power converter. Compare against SI88440ED-AS for packaging differences or SI88440BD-ISR if reel packaging and shutdown functionality are needed. Evaluate thermal performance at +125°C max operating temperature. Ensure input/output voltage levels align with the 3 V to 5.5 V supply range.

Digital Isolators Part Context

Part of the Si88440 series of high-speed digital isolators. This family integrates capacitive coupling technology with on-board DC-DC converters to eliminate external transformer requirements. The SI88440EC-AS specifically denotes the tube-packaged variant in an SOIC-20 footprint, distinguishing it from tape-and-reel options like the ISR suffix.

Digital Isolators Replacement Considerations

SI88440ED-AS offers identical electrical specifications but differs in factory packaging quantity. SI88440BD-ISR includes a shutdown pin and comes in a reel package; verify functional compatibility if shutdown control is not utilized.