SI88640BC-IS

Overview

The SI88640BC-IS is a Skyworks Solutions digital isolator featuring four unidirectional channels in a 24-SOIC package. It operates on a 3 V to 5.5 V supply with a propagation delay of 18 ns and data rates up to 100 Mb/s. The device provides 5000 Vrms isolation voltage and supports an operating temperature range from -40°C to +125°C. Key electrical parameters include rise and fall times of 25 ns, pulse width distortion of 4.5 ns, and high common-mode transient immunity.

Feature Summary

• Provides robust galvanic isolation between circuits using capacitive coupling technology.
• Integrates an on-chip DC-DC converter to generate isolated power supplies for the secondary side.
• Ensures signal integrity through high common-mode transient immunity characteristics.

Applications

• Industrial automation systems requiring reliable signal isolation
• Medical equipment needing safety-compliant circuit separation
• Power electronics interfaces for motor control applications

Procurement Notes

Verify the specific suffix 'IS' confirms the integrated DC-DC converter variant and SOIC-24 packaging. Ensure compatibility with moisture sensitivity levels and reflow soldering profiles specified in the official datasheet. Confirm that the 5000 Vrms isolation rating meets your system's safety requirements before finalizing procurement orders.

Selection Notes

Select this component when four-channel unidirectional isolation with integrated power generation is required. Compare against variants without DC-DC converters if external power sources are available. Consider the 24-SOIC footprint constraints and thermal performance within the -40°C to +125°C operational range during design integration.

Part Context

This part belongs to the Si88640 series of general-purpose digital isolators from Skyworks Solutions. It complements other family members like the SI88640BC-ASR by offering integrated power conversion capabilities. The series targets applications demanding high reliability and compact form factors in interface ICs.

Replacement Considerations

Direct substitutes may include SI88640BC-ISR or SI88640EC-IS, provided they match the 24-SOIC package and functional requirements. Verify pinout compatibility and insulation voltage ratings before swapping components in existing designs.