SI8640BT-AS

Digital Isolators Overview

The SI8640BT-AS is a quad-channel digital isolator from the Si864x series, manufactured by Skyworks Solutions Inc. It features unidirectional signal transmission with four forward channels and zero reverse channels. The device utilizes capacitive coupling technology to provide an insulation voltage of 5000 Vrms. It supports data rates up to 150 Mb/s with a propagation delay of 8 ns. Operating within a supply voltage range of 2.5 V to 5.5 V, it draws a typical operating current of 6.1 mA. The component is housed in a 16-pin SOIC package and is qualified under AEC-Q100 standards for automotive applications.

Digital Isolators Feature Summary

• Provides high-voltage isolation via capacitive coupling technology
• Supports high-speed data transmission at 150 Mb/s
• Qualified for automotive reliability standards
• Features low power consumption characteristics

Digital Isolators Applications

• Automotive electronic control units
• Industrial communication interfaces
• Power supply monitoring circuits
• Motor drive gate drivers

Digital Isolators Procurement Notes

Verify the specific suffix 'AS' corresponds to tube packaging rather than reel packaging when sourcing. Confirm AEC-Q100 qualification status is required for the target application environment. Ensure the SOIC-16 footprint matches the PCB design constraints. Cross-reference the datasheet revision to confirm parameter consistency against previous versions.

Digital Isolators Selection Notes

Select this component when unidirectional isolation is sufficient for the system architecture. Consider the 5000 Vrms rating for applications requiring robust galvanic separation between high and low voltage domains. Evaluate the 8 ns propagation delay against timing requirements of the communication protocol. Verify that the 150 Mb/s data rate meets the bandwidth needs of the signal lines.

Digital Isolators Part Context

This part belongs to the Si864x family of ultra-low power digital isolators. It shares architectural similarities with other members like the SI8641BT-AS but differs in channel configuration and polarity. The SI8640BT-AS specifically offers four forward channels without reverse capability, distinguishing it from bidirectional variants in the same product line.

Digital Isolators Replacement Considerations

The SI8640BD-AS is listed as a parametric equivalent. Verify pinout compatibility and electrical specifications before substitution. Ensure the replacement part meets the same AEC-Q100 automotive qualification requirements.