SI8640AB-ASR

Digital Isolators Overview

The SI8640AB-ASR is a unidirectional digital isolator from the Si86xx series, manufactured by Skyworks Solutions. It features four channels with a data rate of 1 Mbps and operates within a supply voltage range of 2.5 V to 5.5 V. The device provides 2500 Vrms isolation using capacitive coupling technology. It is housed in an SOIC-16 package and supports an operating temperature range from -40°C to +125°C. Key electrical parameters include a propagation delay of 35 ns, rise/fall times of 4 ns, and a typical operating current of 1.8 mA.

Digital Isolators Feature Summary

• Provides galvanic isolation via capacitive coupling technology for signal integrity
• Supports high-speed operation up to 1 Mbps without start-up initialization
• Features ultra-low power consumption suitable for battery-operated applications
• Designed for automotive environments with robust thermal performance

Digital Isolators Applications

• Automotive engine control units requiring isolated communication
• Industrial motor drives and inverters
• Power supply feedback loops
• Medical equipment signal isolation

Digital Isolators Procurement Notes

Verify the specific suffix ASR corresponds to the reel packaging configuration as listed in official Skyworks documentation. Confirm that the AEC-Q100 qualification status aligns with your specific automotive grade requirements, as this varies across the Si864x family. Ensure the SOIC-16 footprint matches your PCB design constraints before finalizing procurement orders.

Digital Isolators Selection Notes

Select this component when a single-directional data path is required across four independent channels. The 1 Mbps data rate distinguishes it from higher-speed variants like the SI8640BT. Consider the 2500 Vrms isolation barrier for standard industrial or automotive applications where lower cost is prioritized over the 5000 Vrms rating found in other models.

Digital Isolators Part Context

This part belongs to the Si86xx family of digital isolators, which utilize Skyworks' proprietary capacitive coupling technology. Unlike magnetic or optical isolators, these devices offer superior reliability and smaller form factors. The SI8640AB variant specifically targets applications needing moderate speed with low power consumption in a compact surface-mount package.

Digital Isolators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.