SI8640BT-AS2

Digital Isolators Overview

The SI8640BT-AS2 is a low-power, quad-channel digital isolator from the Si864x series by Skyworks Solutions. It features four unidirectional channels with a data rate of 150 Mb/s and an insulation voltage of 5000 Vrms. The device operates within a supply voltage range of 2.5 V to 5.5 V, consuming 6.1 mA of operating current. It exhibits a propagation delay of 8 ns and supports a wide operating temperature range from -40 °C to +125 °C. Packaged in a 16-SOIC (0.295 inch width) surface-mount format, it is AEC-Q100 qualified for automotive applications.

Digital Isolators Feature Summary

• Provides high-speed signal isolation with 150 Mb/s data rate capability across four independent channels.
• Ensures robust electrical safety through 5000 Vrms insulation voltage rating.
• Designed for automotive environments with AEC-Q100 qualification and extended temperature tolerance.
• Utilizes capacitive coupling technology for reliable signal transmission without magnetic interference.

Digital Isolators Applications

• Automotive powertrain control modules
• Inverter gate drive circuits
• Industrial motor drives
• High-voltage measurement systems

Digital Isolators Procurement Notes

Verify the specific suffix 'AS2' against the manufacturer's official datasheet to confirm package dimensions and tape-and-reel or tube packaging details. Ensure the component meets AEC-Q100 grade requirements for your target application environment. Cross-reference the SOIC-16 footprint with your PCB design guidelines to guarantee mechanical compatibility during assembly.

Digital Isolators Selection Notes

Select this component when four isolated bidirectional or unidirectional signals require high common-mode transient immunity and low power consumption. The 5000 Vrms rating suits applications demanding strong galvanic isolation between high-voltage and low-voltage domains. Consider the 150 Mb/s speed limit for timing-critical interfaces and verify that the 8 ns propagation delay aligns with system synchronization needs.

Digital Isolators Part Context

This part belongs to the Si864x family of digital isolators, which are designed to replace traditional transformer and optocoupler solutions. The family offers improved reliability, smaller form factors, and lower power consumption compared to legacy isolation technologies. The SI8640BT-AS2 specifically targets automotive and industrial markets requiring certified high-voltage isolation.

Digital Isolators Replacement Considerations

Direct pin-to-pin replacements within the same series include SI8640BT-IS2. Verify channel count, insulation voltage, and package type before substitution. Alternative families may require schematic redesign due to differing pinouts or electrical characteristics.