SI8651BB-AS1R

Digital Isolators Overview

The SI8651BB-AS1R is a five-channel digital isolator from Skyworks Solutions, designed for automotive applications. It features four unidirectional forward channels and one reverse channel with capacitive coupling isolation. The device operates within a supply voltage range of 2.375 V to 5.5 V and supports data rates up to 150 Mb/s. Key electrical parameters include an insulation voltage of 2500 Vrms, propagation delay of 8 ns, rise/fall times of 4 ns, and pulse width distortion of 0.2 ns. It is housed in a SOIC-16 package, qualified under AEC-Q100, and functions between -40°C and +125°C.

Digital Isolators Feature Summary

• Provides galvanic isolation for automotive circuits using capacitive coupling technology.
• Integrates five independent signal paths with a shutdown capability for power management.
• Delivers high-speed data transmission with low propagation delay and minimal pulse width distortion.

Digital Isolators Applications

• Automotive electronic control units requiring circuit isolation
• Inverter gate drive interfaces
• Isolated communication buses in vehicle networks

Digital Isolators Procurement Notes

Verify the specific suffix AS1R corresponds to the reel packaging configuration as documented by the manufacturer. Confirm that the AEC-Q100 qualification status meets the required automotive grade standards for the target application environment. Ensure the SOIC-16 footprint matches the design layout constraints.

Digital Isolators Selection Notes

Select this component when a five-channel isolator with asymmetric directionality (four forward, one reverse) is required. The 150 Mb/s data rate suits high-speed applications, while the 2500 Vrms insulation rating provides adequate safety margins for many automotive systems. Consider the operating temperature range and supply voltage compatibility during system integration.

Digital Isolators Part Context

This part belongs to the Si865x series of digital isolators from Skyworks Solutions. The series utilizes silicon dioxide-based capacitive coupling for robust isolation. The SI8651 variant specifically offers five channels, distinguishing it from other members of the family that may offer different channel counts or higher insulation voltages.

Digital Isolators Replacement Considerations

Check for direct substitutes within the Si865x family, such as the SI8651AB-B-IS1R, which shares similar channel configurations but may differ in data rate specifications. Verify pinout compatibility and electrical parameter alignment before substitution.