SI8642BT-ASR

Digital Isolators Overview

The SI8642BT-ASR 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 using capacitive coupling technology. The device operates on a supply voltage between 2.375 V and 5.5 V, drawing a typical operating current of 6.1 mA. It exhibits a propagation delay of 8 ns and supports pulse widths down to 5 ns. Packaged in a 16-SOIC format, it functions within a temperature range of -40°C to +125°C and holds AEC-Q100 qualification for automotive applications.

Digital Isolators Feature Summary

• Provides electrical isolation via capacitive coupling technology for robust signal transmission across isolated domains.
• Features four independent unidirectional signal paths to support complex multi-channel interface requirements.
• Includes integrated shutdown functionality to minimize power consumption during idle periods.
• Certified to AEC-Q100 standards, ensuring reliability and performance consistency for automotive electronic systems.

Digital Isolators Applications

• Automotive infotainment and display interface systems
• Industrial communication gateways and protocol converters
• Medical equipment requiring high-voltage isolation
• Power monitoring and control circuits

Digital Isolators Procurement Notes

Verify the specific suffix ASR against official Skyworks documentation to confirm reel packaging and tape specifications. Ensure the selected variant matches the required insulation voltage and channel configuration for your design. Cross-reference the AEC-Q100 qualification status if automotive compliance is mandatory. Confirm lead times and availability directly with authorized distributors as stock levels fluctuate.

Digital Isolators Selection Notes

Select this component when four unidirectional channels are required with high insulation voltage capabilities. Compare the 6.1 mA supply current against other variants in the Si864x family to optimize power budgets. Consider the SOIC-16 package dimensions for PCB layout constraints. Verify that the 150 Mb/s data rate meets the system's timing requirements without introducing excessive jitter or delay.

Digital Isolators Part Context

This part belongs to the Si864x family of digital isolators, which utilizes Skyworks' proprietary capacitive isolation technology. The family offers various configurations including bidirectional and mixed-direction options. The SI8642BT-ASR specifically targets applications needing low power consumption alongside high reliability in harsh environments.

Digital Isolators Replacement Considerations

Check Skyworks datasheets for direct pin-compatible alternatives within the Si864x series. Verify if variants like SI8642BD or SI8642BB offer different insulation ratings or packaging options suitable for the application.