SI88640EC-IS

Overview

The SI88640EC-IS is a quad-channel digital isolator from Skyworks Solutions, utilizing capacitive coupling technology for signal transmission. It features an integrated DC-DC converter and supports unidirectional data flow at rates up to 100 Mb/s. The device operates within a supply voltage range of 3 V to 5.5 V and offers an isolation voltage of 3750 Vrms. Key electrical parameters include a propagation delay of 18 ns, rise/fall times of 2.5 ns, and a maximum pulse width distortion of 4.5 ns. It is housed in a 24-SOIC package and is qualified under AEC-Q100 standards for automotive applications.

Feature Summary

• Integrates a high-efficiency DC-DC converter to eliminate the need for external isolated power supplies.
• Provides robust galvanic isolation via capacitive coupling with high common-mode transient immunity.
• Supports high-speed data transmission with low propagation delay and jitter characteristics.
• Meets automotive reliability requirements through AEC-Q100 qualification.

Applications

• Automotive infotainment and display systems requiring isolated communication.
• Industrial automation controllers needing reliable signal isolation between domains.
• Medical equipment interfaces demanding high safety isolation standards.
• Power electronics gate drive circuits for motor control applications.

Procurement Notes

Verify the specific suffix 'IS' corresponds to the SOIC-24 tube packaging configuration as listed in official Skyworks documentation. Confirm that the AEC-Q100 qualification status is required for your specific application environment. Ensure compatibility with the 3 V to 5.5 V operating voltage range before integration. Cross-reference the datasheet revision date to ensure all latest electrical specifications are considered during design validation.

Selection Notes

Select this component when a single-chip solution for four isolated channels with integrated power conversion is required. It is suitable for designs prioritizing board space reduction by eliminating external isolated regulators. Consider the 100 Mb/s data rate limit for high-speed interface requirements. Verify that the unidirectional channel configuration aligns with the system's signal flow direction needs.

Part Context

This part belongs to the Si8864x family of digital isolators designed for high-reliability applications. The series combines signal isolation with power management in a compact form factor. It addresses the growing demand for isolated interfaces in automotive and industrial sectors where safety and noise immunity are critical. The family supports various channel configurations and packaging options to suit diverse design constraints.

Replacement Considerations

Check Skyworks documentation for direct pin-compatible alternatives within the Si8864x series. Verify if other suffixes offer different packaging or temperature ranges without changing functionality. Ensure any substitute maintains the same integrated DC-DC converter capability and isolation voltage ratings.