SI8651AB-B-IS1

Digital Isolators Overview

The SI8651AB-B-IS1 is a five-channel digital isolator from the Si865x series, manufactured by Skyworks Solutions Inc. It features unidirectional signal transmission with four forward and one reverse channel. The device operates on a supply voltage range of 2.5 V to 5.5 V and supports data rates up to 1 Mbps. It provides an insulation voltage of 2500 Vrms using capacitive coupling technology. Key electrical parameters include a propagation delay of 35 ns, a pulse width of 250 ns, and a power dissipation of 415 mW. It functions within a temperature range of -40°C to +125°C and is housed in a 16-pin SOIC-Narrow package.

Digital Isolators Feature Summary

• Provides galvanic isolation for five independent digital channels using capacitive coupling technology.
• Supports high-speed operation with data rates up to 1 Mbps without requiring start-up initialization.
• Features wide operating supply voltage compatibility ranging from 2.5 V to 5.5 V.
• Ensures signal integrity with a common-mode transient immunity rating of 35 kV/µs.

Digital Isolators Applications

• General purpose digital isolation in industrial automation systems
• Isolation barriers in measurement and sensing equipment
• Power management circuit interfaces in energy monitoring devices

Digital Isolators Procurement Notes

Verify the specific suffix IS1R or IS1 against the datasheet to confirm tape-and-reel versus tube packaging requirements. Confirm that the AEC-Q100 qualification status aligns with your project's automotive or industrial reliability standards. Ensure the SOIC-Narrow-16 footprint matches your PCB layout constraints before finalizing procurement orders.

Digital Isolators Selection Notes

Select this component when five isolated channels are required at 1 Mbps speeds. Compare against the SI8651EC variant if higher insulation voltage (3.75 kVrms) or faster data rates (150 Mbps) are needed. Consider the SI8651BB series if automotive AEC-Q100 certification is mandatory for the application environment.

Digital Isolators Part Context

This part belongs to the Si865x family of digital isolators, which utilizes Skyworks' proprietary iCoupler technology. The family offers various channel counts and speed grades. The SI8651AB specifically targets general-purpose applications requiring moderate speed and standard isolation levels within a compact 16-pin form factor.

Digital Isolators Replacement Considerations

The SI8651EC-B-IS1 offers higher performance with 3.75 kVrms isolation and 150 Mbps speed. For automotive-grade requirements, the SI8651BB series provides AEC-Q100 certification. Verify pinout compatibility and thermal characteristics when substituting these variants.