SI88440BD-ASR

Isolators - Gate Drivers Overview

The SI88440BD-ASR is a unidirectional digital isolator from the Si88440 series, manufactured by Skyworks Solutions. It features four independent channels housed in an SOIC-20 surface-mount package. The device supports data rates up to 100 Mb/s with a propagation delay of 18 ns and pulse width distortion of 4.5 ns. It operates on a supply voltage between 3 V and 5.5 V, drawing 13.3 mA of working current. Key electrical specifications include a maximum rise and fall time of 2.5 ns and an isolation voltage of 5000 Vrms. The component functions within a temperature range of -40°C to +125°C.

Isolators - Gate Drivers Feature Summary

• Provides galvanic isolation for high-speed digital signals using capacitive coupling technology.
• Integrates four unidirectional signal paths within a single compact integrated circuit.
• Operates reliably across extended industrial temperature ranges without requiring shutdown functionality.

Isolators - Gate Drivers Applications

• Industrial automation systems requiring robust signal isolation
• Medical equipment needing high-voltage safety barriers
• Power electronics interfaces for gate drive applications

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix ASR indicates reel packaging when ordering. Confirm that the manufacturer lists this part as not recommended for new designs if sourcing from legacy channels. Ensure compatibility with moisture sensitivity levels during storage and handling procedures before assembly.

Isolators - Gate Drivers Selection Notes

Choose this component when four isolated bidirectional or unidirectional channels are required in a small footprint. The SOIC-20 package suits space-constrained PCB layouts. Verify that the 5000 Vrms isolation rating meets system safety standards. Ensure the 100 Mb/s data rate aligns with communication requirements.

Isolators - Gate Drivers Part Context

This device belongs to the Si88440 family of digital isolators designed for high-reliability applications. It replaces older optocoupler solutions by offering faster switching speeds and lower power consumption. The integration of multiple channels reduces board space and simplifies design complexity compared to discrete isolation components.

Isolators - Gate Drivers Replacement Considerations

Check for SI88440BC-ASR or SI88440ED-ASR variants which share similar electrical characteristics but may differ in packaging or manufacturing lot details. Verify pinout compatibility before substitution.