SI88620BD-ISR

Overview

The SI88620BD-ISR is a high-speed digital isolator from Skyworks Solutions, featuring two unidirectional channels and an integrated DC-DC converter. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 100 Mb/s. The device provides 5000 Vrms insulation voltage using capacitive coupling technology. Key electrical parameters include a propagation delay of 18 ns, rise/fall times of 2.5 ns, and a pulse width distortion of 4.5 ns. It functions reliably across a temperature range of -40°C to +125°C and is housed in a 20-SOIC wide package.

Feature Summary

• Integrates a 2W DC-DC converter for isolated power generation
• Provides robust capacitive coupling isolation with high common-mode transient immunity
• Supports high-speed data transmission at 100 Mb/s with low propagation delay

Applications

• Industrial automation systems requiring galvanic isolation
• Power electronics and motor drive circuits
• Medical equipment needing safety-certified signal isolation

Procurement Notes

Verify the specific suffix 'ISR' indicates the reel packaging format and SOIC-Wide-20 footprint. Confirm RoHS compliance status through official Skyworks documentation. Check for end-of-life or not-recommended-for-new-designations prior to final procurement decisions. Ensure thermal management aligns with the specified operating temperature range.

Selection Notes

Select this component when bidirectional isolation is not required, as it offers only unidirectional channels. The integrated DC-DC converter simplifies design by eliminating external isolated power supplies. Compare channel count and speed requirements against other Si8862x variants if higher throughput or different pin configurations are needed.

Part Context

This part belongs to the Si8862x ISOvolt family, designed to replace optocouplers in industrial applications. It combines digital isolation with on-chip power conversion to reduce system size and cost. The series targets applications demanding high reliability and long-term stability in electrically noisy environments.

Replacement Considerations

Check for direct substitutes within the Si8862x family such as SI88620ED-ISR for similar specifications. Verify pin compatibility and electrical ratings before swapping with older Skyworks isolation products.