SI88642BC-ASR

Isolators - Gate Drivers Overview

The SI88642BC-ASR is a unidirectional digital isolator from the Si88642 series, housed in a SOIC-24 SMD/SMT package. It features four channels with two forward and two reverse paths, supporting data rates up to 100 Mb/s. The device provides an insulation voltage of 5000 Vrms and operates within a supply voltage range of 3 V to 5.5 V. Key timing parameters include a propagation delay of 18 ns, rise/fall times of 25 ns, and pulse width distortion of 4.5 ns. It lacks a shutdown function and functions without an integrated DC-DC converter.

Isolators - Gate Drivers Feature Summary

• Provides high-voltage galvanic isolation via capacitive coupling technology for signal integrity across potential differences.
• Supports high-speed data transmission with low propagation delay and minimal pulse width distortion for precise timing applications.
• Offers flexible channel configuration with independent forward and reverse signal paths in a compact surface-mount footprint.

Isolators - Gate Drivers Applications

• Industrial automation control systems requiring robust signal isolation
• Medical equipment interfaces needing high dielectric strength
• Power electronics monitoring circuits
• Automotive electronic subsystems

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'ASR' against official Skyworks documentation to confirm tape and reel packaging and temperature grade specifications. Ensure compatibility with existing PCB footprints for the SOIC-24 package. Cross-reference the 5000 Vrms insulation rating with system safety requirements. Confirm that the absence of a shutdown pin aligns with design logic. Validate RoHS compliance status through current manufacturer declarations.

Isolators - Gate Drivers Selection Notes

Choose this component when unidirectional isolation with high voltage withstand capability is required without integrated power conversion. The lack of a shutdown feature simplifies control logic but requires external management if power-down states are needed. The SOIC-24 package offers a balance between channel count and board space. Consider the 100 Mb/s data rate limit for high-frequency signal transmission needs.

Isolators - Gate Drivers Part Context

This part belongs to the Si88642 family of digital isolators, which utilizes Skyworks' proprietary capacitive coupling technology. Unlike variants such as the SI88642EC-ASR, this model does not include an integrated DC-DC converter, relying instead on external power supplies for both sides of the isolation barrier. It shares similar electrical characteristics with other unidirectional members of the series but differs in packaging and specific thermal ratings.

Isolators - Gate Drivers Replacement Considerations

Direct substitutes within the same series include SI88642BC-AS, which shares identical electrical specifications but may differ in packaging format (tube vs. reel). Verify functional equivalence regarding the absence of shutdown pins and DC-DC converters before substitution.

Isolators - Gate Drivers FAQ

Does the SI88642BC-ASR include an integrated DC-DC converter?

No, this specific variant does not include an integrated DC-DC converter and requires external power supplies for both the source and destination sides.

What is the maximum insulation voltage rating?

The device supports an insulation voltage of 5000 Vrms.