SI88621BD-AS

Overview

The SI88621BD-AS is a general-purpose digital isolator from Skyworks Solutions, housed in a 20-pin SOIC package. It features two 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 8 mA of current. Key electrical parameters include a 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 without a shutdown pin.

Feature Summary

• Provides galvanic isolation via capacitive coupling technology for signal integrity.
• Supports high-speed digital communication with a 100 Mb/s data rate capability.
• Ensures safety compliance through a 5000 Vrms insulation voltage rating.

Applications

• Industrial process control systems requiring isolated sensor interfaces
• Medical equipment needing patient isolation barriers
• Power electronics monitoring circuits

Procurement Notes

Verify the specific suffix against official Skyworks documentation to confirm pinout and functional equivalence. Confirm availability status as distribution listings may indicate restricted supply or regional sales limitations. Ensure the selected variant matches the required insulation voltage and channel configuration for the target application design.

Selection Notes

Select this component when a 2-channel unidirectional isolator with 5000 Vrms rating is required. Compare against the SI88621BC-IS if integrated DC-DC conversion is needed instead of external power management. Consider the SI8621 series for applications demanding higher 150 Mbps data rates or different package footprints.

Part Context

This part belongs to the Si88621 family of digital isolators designed for robust industrial and automotive environments. It utilizes Skyworks' proprietary capacitive isolation technology to provide high common-mode transient immunity. The family offers various configurations including those with integrated power converters.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult official Skyworks documentation for qualified alternatives.