SI8641BD-B-IS

Digital Isolators Overview

The SI8641BD-B-IS is a quad-channel digital isolator from the Si864x series, manufactured by Skyworks Solutions Inc. It features capacitive coupling isolation with a rated insulation voltage of 5000 Vrms. The device supports data rates up to 150 Mb/s and operates within a supply voltage range of 2.5 V to 5.5 V. It provides three unidirectional forward channels and one unidirectional reverse channel. Key electrical parameters include a typical propagation delay of 8 ns, rise and fall times of 4 ns, and a pulse width distortion of 0.2 ns. The component is qualified under AEC-Q100 standards for automotive applications and functions reliably across an operating temperature range of -40°C to +125°C.

Digital Isolators Feature Summary

• High-voltage isolation capability with 5000 Vrms rating for robust circuit protection
• Ultra-low power consumption design suitable for energy-efficient systems
• AEC-Q100 qualification ensuring reliability in demanding automotive environments

Digital Isolators Applications

• Automotive electronic control units (ECUs)
• Industrial motor control systems
• Power supply feedback loops

Digital Isolators Procurement Notes

Verify that the specific suffix 'B' matches the required package width and pinout configuration for your PCB layout. Confirm that the 'IS' designation aligns with the intended tape-and-reel or tube packaging requirements for your assembly process. Ensure the AEC-Q100 qualification status meets your project's automotive grade specifications before finalizing procurement.

Digital Isolators Selection Notes

Select this component when high voltage isolation is required alongside low power consumption. The 3/1 channel configuration is ideal for applications needing multiple signal outputs and a single return path. Consider the 150 Mb/s data rate limit and ensure it exceeds your system's communication speed requirements while maintaining signal integrity over the specified temperature range.

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 channel configurations and isolation voltages. The SI8641BD-B-IS specifically addresses needs for high-density, low-power isolation in space-constrained designs requiring automotive-grade reliability.

Digital Isolators Replacement Considerations

Public confirmed substitute part numbers: SI8641BD-B-ISR, SI8641BD-B-IS2, SI8641BD-B-YS0.