SI8651AB-B-IS1R

Digital Isolators Overview

The SI8651AB-B-IS1R is a five-channel unidirectional digital isolator from the Si865x series, manufactured by Skyworks Solutions. It utilizes capacitive coupling technology to provide electrical isolation with a rated insulation voltage of 2500 Vrms. The device supports data rates up to 1 Mb/s and features a typical propagation delay of 35 ns. It operates within a supply voltage range of 2.5 V to 5.5 V and is housed in a SOIC-Narrow-16 package. 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

• Provides robust galvanic isolation between circuits using high-reliability capacitive coupling technology.
• Supports general-purpose digital signal transmission with unidirectional channel configuration.
• Meets automotive quality requirements through AEC-Q100 qualification for enhanced durability.

Digital Isolators Applications

• Automotive electronic control units requiring certified isolation components
• Industrial communication interfaces needing reliable signal transfer across potential differences
• Power conversion systems isolating control logic from high-voltage power stages

Digital Isolators Procurement Notes

Verify the specific suffix IS1R confirms the reel packaging format when ordering. Ensure the AB variant matches the required 2500 Vrms isolation rating for your design. Confirm AEC-Q100 compliance is necessary for your target application environment. Check that the SOIC-Narrow-16 footprint aligns with your PCB layout constraints before finalizing procurement.

Digital Isolators Selection Notes

Select this component when a five-channel solution is required with moderate speed capabilities. The 1 Mb/s data rate suits standard industrial protocols but may be insufficient for high-speed Ethernet or USB applications. Consider the 2500 Vrms isolation limit against system transient requirements. The unidirectional nature restricts usage to single-way signal paths without additional circuitry.

Digital Isolators Part Context

This part belongs to the Si865x family of digital isolators, which offers various channel counts and isolation voltages. The SI8651AB-B-IS1R specifically addresses the need for five isolated channels in a compact surface-mount package. It complements lower-channel variants like the SI8641 and higher-isolation models within the same product line.

Digital Isolators Replacement Considerations

Direct substitutes include other Skyworks Si865x series parts with matching channel counts and isolation ratings. Verify pin compatibility and electrical specifications before swapping with similar devices from different manufacturers.