SI8645BT-AS2

Digital Isolators Overview

The SI8645BT-AS2 is an automotive-grade, four-channel digital isolator from the Si864x series by Skyworks Solutions. It utilizes capacitive coupling technology to provide electrical isolation with a rated insulation voltage of 5000 Vrms. The device supports data rates up to 150 Mb/s and features a typical propagation delay of 8 ns. It operates within a supply voltage range of 2.5 V to 5.5 V and consumes approximately 6.1 mA of quiescent current. Packaged in a 16-pin SOIC, it meets AEC-Q100 qualification standards for automotive applications.

Digital Isolators Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards
• High common-mode transient immunity of 35 kV/µs
• Ultra-low power consumption for energy-efficient operation
• Capacitive coupling isolation for robust signal transmission

Digital Isolators Applications

• Automotive gate driver circuits
• Inverter control systems
• Motor drive interfaces
• On-board charger communication links

Digital Isolators Procurement Notes

Verify the specific suffix AS2 against official Skyworks documentation to confirm package type and tape-and-reel configuration. Ensure the component matches the required AEC-Q100 automotive qualification level. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and avoid counterfeit risks. Confirm that the ordering information aligns with the intended surface-mount assembly process.

Digital Isolators Selection Notes

Select this component when high-voltage isolation is required in automotive environments. The 5000 Vrms rating suits applications with significant potential differences between control and power stages. The unidirectional channel configuration limits use cases to single-direction data flow. Verify that the 150 Mb/s data rate meets system timing requirements. Consider the 16-SOIC footprint for PCB layout compatibility.

Digital Isolators Part Context

This device belongs to the Si864x family of digital isolators, which are designed for general-purpose and automotive applications. The family offers various channel counts and isolation voltages. The SI8645 variant specifically provides four channels, making it suitable for multi-line communication or parallel signal isolation needs in complex electronic systems.

Digital Isolators Replacement Considerations

Check for SI8645BT-IS2 as a potential alternative within the same series. Verify if other Skyworks models with similar isolation ratings and channel counts meet the specific application requirements. Ensure any substitute maintains the same package dimensions and pinout configuration.