SI88621ED-IS

Overview

The SI88621ED-IS is a general-purpose digital isolator from Skyworks Solutions, featuring two unidirectional channels with a data rate of 100 Mb/s. It utilizes capacitive coupling technology to provide an isolation voltage of 5000 Vrms and a common-mode transient immunity of 40 kV/µs. The device operates within a supply voltage range of 3 V to 5.5 V, drawing a typical operating current of 8 mA. Key timing parameters include a propagation delay of 18 ns, rise and fall times of 2.5 ns, and a pulse width distortion of 4.5 ns. It is housed in a 20-SOIC package and supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Provides galvanic isolation between circuits using capacitive coupling technology for high reliability.
• Features unidirectional signal transmission with integrated DC-DC converter capabilities.
• Delivers high common-mode transient immunity to ensure signal integrity in noisy environments.

Applications

• Industrial automation systems requiring robust signal isolation
• Medical equipment needing safe patient isolation barriers
• Power electronics interfaces for motor control applications

Procurement Notes

Verify the specific suffix 'IS' corresponds to tube packaging rather than tape-and-reel variants like 'ISR'. Confirm that the component status is active, as some related models in this series may be marked as not recommended for new designs. Ensure compatibility with the required 20-SOIC footprint and check for any regional distribution restrictions before ordering.

Selection Notes

Select this model when unidirectional isolation with integrated power conversion is required. It is suitable for applications demanding high isolation voltage and fast response times. Consider the 20-SOIC package size for board space constraints. Verify that the 100 Mb/s data rate meets the system's communication speed requirements without necessitating higher-speed alternatives.

Part Context

This component belongs to the Si8862x family of digital isolators designed for industrial and automotive applications. It integrates isolation barriers with on-chip DC-DC converters, reducing external component count. The family offers various channel configurations and insulation ratings to support diverse interface needs in harsh electrical environments.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official Skyworks resources for cross-reference information or verify if alternative SKUs within the same series meet the specific electrical and mechanical requirements.