SI8642BT-ISR

Digital Isolators Overview

The SI8642BT-ISR is a Skyworks Solutions digital isolator featuring four unidirectional channels with capacitive coupling technology. It operates within a supply voltage range of 2.375 V to 5.5 V and supports data rates up to 150 Mb/s. The device provides an insulation voltage of 5000 Vrms and exhibits a propagation delay of 8 ns. It functions reliably across a temperature range of -40°C to +125°C. Packaged in a 16-SOIC wide format, it meets AEC-Q100 automotive qualification standards.

Digital Isolators Feature Summary

• Utilizes capacitive coupling for high-speed signal transmission
• Provides robust electrical isolation between circuit domains
• Supports bidirectional data flow through dedicated forward and reverse channel configurations
• Complies with automotive reliability standards for harsh environments

Digital Isolators Applications

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

Digital Isolators Procurement Notes

Verify the specific suffix 'ISR' corresponds to the reel packaging configuration required for automated assembly processes. Confirm that the 16-SOIC wide package dimensions align with the target PCB footprint. Ensure the 5000 Vrms isolation rating satisfies the safety requirements of the intended application environment. Cross-reference the AEC-Q100 certification status if automotive compliance is mandatory for the project.

Digital Isolators Selection Notes

Select this component when four isolated channels are required for unidirectional data transfer at speeds up to 150 Mb/s. The 5000 Vrms isolation level makes it suitable for applications demanding high dielectric strength between low-voltage logic and high-voltage power stages. Consider the 8 ns propagation delay for timing-sensitive designs. The wide SOIC package facilitates easier manual handling or rework compared to narrower variants.

Digital Isolators Part Context

This part belongs to the Si864x family of digital isolators from Skyworks Solutions. The series is characterized by its use of silicon dioxide-based capacitive coupling technology, which offers superior performance over traditional transformer or optical isolation methods. The family includes variants with different isolation voltages and channel configurations to address diverse interface needs.

Digital Isolators Replacement Considerations

SI8642BD-B-ISR: Offers identical 4-channel functionality but features a 5 kV isolation rating with a different pinout orientation for bidirectional support.

Digital Isolators FAQ

What is the maximum data rate supported by the SI8642BT-ISR?

The device supports a maximum data rate of 150 Mb/s.

Does the SI8642BT-ISR meet automotive qualification standards?

Yes, the component is qualified according to the AEC-Q100 standard.