SI8641BB-B-IUR

Digital Isolators Overview

The SI8641BB-B-IUR is a high-performance digital isolator from Skyworks Solutions, featuring four isolated channels with unidirectional signal paths. It utilizes capacitive coupling technology to provide robust electrical isolation rated at 2500 Vrms. The device supports data rates up to 150 Mbps and offers a propagation delay of 8 ns. It operates within a supply voltage range of 2.375 V to 5.5 V and is housed in a 16-SSOP package. Designed for industrial applications, it functions reliably across an extended temperature range from -40°C to +125°C.

Digital Isolators Feature Summary

• Capacitive coupling technology ensures long-term reliability without degradation over time.
• Integrated shutdown function allows for low-power standby modes when not in use.
• High common-mode transient immunity protects against noise in electrically noisy environments.

Digital Isolators Applications

• Industrial automation systems requiring galvanic isolation
• Power supply feedback loops for accurate control
• Communication interfaces between microcontrollers and peripheral devices

Digital Isolators Procurement Notes

Verify the specific suffix 'IUR' corresponds to the reel packaging format rather than tube packaging when sourcing. Confirm that the component meets AEC-Q100 automotive qualification if intended for vehicle electronics, as standard commercial variants may lack this certification. Ensure compatibility with the required voltage levels and thermal management specifications for the target application environment.

Digital Isolators Selection Notes

Select this model when high-speed data transmission up to 150 Mbps is required alongside strong isolation capabilities. Consider the 16-SSOP package size for board space constraints. Evaluate the need for integrated shutdown features to manage power consumption during idle periods. Compare against lower-speed alternatives if data rate requirements are less stringent.

Digital Isolators Part Context

This component belongs to the Si864x series of digital isolators, which are designed for general-purpose applications. The series is known for its use of CMOS process technology and capacitive isolation, offering superior performance compared to traditional optocouplers. It serves as a modern replacement for legacy isolation components in various electronic designs.

Digital Isolators Replacement Considerations

SI8641BA-B-IU is a documented alternative within the same family, though it typically features a lower isolation rating of 1000 Vrms. Verify that the reduced insulation voltage meets the safety requirements of the specific circuit design before substitution.

Digital Isolators FAQ

What is the maximum data rate supported by this isolator?

The SI8641BB-B-IUR supports a maximum data rate of 150 Mbps.

Does this component include a shutdown feature?

Yes, the device includes an integrated shutdown function to reduce power consumption.