SI8651BD-B-IS

Digital Isolators Overview

The SI8651BD-B-IS is a five-channel digital isolator from Skyworks Solutions, designed for automotive and industrial applications. It features unidirectional signal transmission with four forward channels and one reverse channel. 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 5000 Vrms, a propagation delay of 8 ns, and rise/fall times of 4 ns. It offers a common-mode transient immunity of 35 kV/µs and includes a shutdown function. The component is qualified under AEC-Q100 standards and functions reliably across a temperature range of -40°C to +125°C.

Digital Isolators Feature Summary

• Provides galvanic isolation via capacitive coupling technology for robust signal integrity.
• Integrates a shutdown pin to minimize power consumption during inactive periods.
• Ensures high noise immunity with specified common-mode transient resistance.
• Complies with automotive reliability standards for demanding operational environments.

Digital Isolators Applications

• Automotive battery management systems
• Industrial motor control interfaces
• Inverter gate drive circuits

Digital Isolators Procurement Notes

Verify the specific suffix 'B-IS' corresponds to the SOIC-16 narrow package and standard tape-and-reel or tube packaging as defined by the manufacturer's current documentation. Confirm that the AEC-Q100 qualification status aligns with your project's automotive grade requirements. Ensure the operating voltage range matches your system's logic levels. Cross-reference the latest datasheet revision to confirm pinout compatibility and thermal characteristics before finalizing procurement orders.

Digital Isolators Selection Notes

Select this component when high channel density is required in a single package for unidirectional signal isolation. It is suitable for designs needing 5000 Vrms isolation strength with low propagation delay. Consider the SOIC-16 footprint constraints and the need for a shutdown feature to manage power budgets. Evaluate the 150 Mb/s data rate against your system's communication speed requirements to ensure adequate performance margins.

Digital Isolators Part Context

This part belongs to the Si865x family of digital isolators, which utilizes Skyworks' proprietary capacitive isolation technology. The family provides various channel configurations and insulation voltages. The SI8651 variant specifically addresses applications requiring five isolated channels. The 'BD' designation typically indicates the wide body SOIC package option, while 'B-IS' specifies the narrow body variant. This series is engineered for high reliability in electric vehicle and industrial power electronics.

Digital Isolators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Verify compatibility with alternative Skyworks models such as the SI8650 series or other Si865x variants based on channel count and insulation voltage requirements. Consult official Skyworks documentation for detailed cross-reference information.