SI88621BD-ASR

Overview

The SI88621BD-ASR is a general-purpose digital isolator from Skyworks Solutions, featuring two channels with unidirectional signal paths. It operates on a supply voltage range of 3 V to 5.5 V and supports data rates up to 100 Mb/s. The device provides an insulation voltage of 5000 Vrms and exhibits a common-mode transient immunity of 40 kV/µs. Key timing parameters include a propagation delay of 18 ns, rise and 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 and is housed in a 20-SOIC package.

Feature Summary

• Capacitive coupling technology for high-speed signal isolation
• Integrated 5000 Vrms insulation capability
• High common-mode transient immunity of 40 kV/µs
• Unidirectional channel configuration

Applications

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

Procurement Notes

Verify the specific suffix 'ASR' against official Skyworks documentation to confirm tape-and-reel packaging and exact electrical tolerances. Ensure compatibility with system voltage levels and thermal requirements before integration. Cross-reference datasheet revisions to validate parameter consistency.

Selection Notes

Select this component when unidirectional isolation is required for signals up to 100 Mb/s. The 20-SOIC package suits applications needing robust insulation without integrated power conversion. Consider the operating temperature range and supply voltage constraints during circuit design.

Part Context

This part belongs to the Si88621 series of digital isolators. It utilizes capacitive coupling technology to provide galvanic isolation between circuits. The series is designed for high reliability in demanding industrial and automotive environments.

Replacement Considerations

SI88621BC-ISR is a documented substitute within the same family.