SI88440ED-ASR

Overview

The SI88440ED-ASR is a general-purpose digital isolator from Skyworks Solutions, housed in a 20-SOIC package. It features four unidirectional channels with a data rate of 100 Mb/s and an insulation voltage of 5000 Vrms. The device operates on a supply voltage between 3 V and 5.5 V, drawing 13.3 mA. Key electrical parameters include a propagation delay of 18 ns, rise/fall times of 2.5 ns, and a common-mode transient immunity of 40 kV/µs. It functions within a temperature range of -40°C to +125°C.

Feature Summary

• Provides galvanic isolation for high-speed digital signals using capacitive coupling technology.
• Supports unidirectional signal transmission across four independent channels.
• Delivers high common-mode transient immunity to maintain signal integrity in noisy environments.

Applications

• Industrial automation control systems
• Power electronics interface circuits
• General-purpose isolated communication links

Procurement Notes

Verify the specific suffix ASR against official Skyworks documentation to confirm reel packaging and moisture sensitivity level requirements. Ensure compatibility with SOIC-20 footprint constraints during procurement planning. Cross-reference the manufacturer part number with distributor listings to confirm current availability status and lead time estimates.

Selection Notes

Select this component when four unidirectional isolated channels are required for high-speed data transfer. Consider the 5000 Vrms insulation rating for safety-critical applications. Evaluate the 100 Mb/s data rate against system timing requirements. Confirm that the 20-SOIC package fits the design board space and thermal management needs.

Part Context

This part belongs to the Si88440 series of digital isolators designed for robust performance in industrial settings. It utilizes Skyworks' proprietary capacitive isolation technology. The ED variant specifies the wide-body SOIC package option, distinguishing it from standard narrow packages while maintaining identical electrical characteristics.

Replacement Considerations

SI88440BC-ASR

FAQ

What is the common-mode transient immunity (CMTI) of the SI88440ED-ASR?

The device offers a common-mode transient immunity of 40 kV/µs.

Does the SI88440ED-ASR support bidirectional communication?

No, the device is configured for unidirectional signal transmission only.