SI8655BB-AS1R

Digital Isolators Overview

The SI8655BB-AS1R is an automotive-grade digital isolator from the Si865x series, manufactured by Skyworks Solutions. It features five unidirectional channels with a data rate of 150 Mb/s and a propagation delay of 8 ns. The device provides 2500 Vrms insulation voltage using capacitive coupling technology. It operates on a supply voltage range of 2.375 V to 5.5 V with a typical operating current of 18.4 mA. Packaged in a 16-pin SOIC, it supports temperatures from -40°C to +125°C and holds AEC-Q100 qualification.

Digital Isolators Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards for harsh environment operation
• High isolation capability with 2500 Vrms insulation voltage for robust noise immunity
• Capacitive coupling technology ensures long-term stability and low power consumption
• Unidirectional signal transmission optimized for simple interface isolation tasks

Digital Isolators Applications

• Automotive electronic control unit (ECU) isolation
• Inverter gate drive circuits in electric vehicles
• On-board charger (OBC) communication interfaces
• Battery management system (BMS) sensor isolation

Digital Isolators Procurement Notes

Verify the specific suffix AS1R indicates reel packaging when sourcing components. Confirm AEC-Q100 qualification status is required for automotive integration projects. Ensure the SOIC-16 package dimensions match the target PCB footprint design constraints. Check for moisture sensitivity level requirements during storage and handling procedures.

Digital Isolators Selection Notes

Select this component for applications requiring five isolated channels with unidirectional data flow. The 2500 Vrms rating suits standard automotive isolation barriers where higher voltages are not critical. Consider the 18.4 mA supply current against total system power budgets. Validate that the 150 Mb/s speed meets the communication protocol timing requirements.

Digital Isolators Part Context

This part belongs to the Si865x family of high-reliability digital isolators designed specifically for automotive electronics. The family offers various channel counts and isolation voltage ratings to support diverse vehicle architectures. The SI8655 variant focuses on providing five channels within a compact surface-mount package suitable for dense board layouts.

Digital Isolators Replacement Considerations

Direct substitutes include other Skyworks Si865x variants such as SI8655BA or SI8655BD depending on required insulation voltage levels. Cross-reference pinouts and electrical characteristics carefully before substitution. Verify that alternative parts meet the same AEC-Q100 automotive qualification standards.