SI8640AB-B-IS

Digital Isolators Overview

The SI8640AB-B-IS is a Skyworks Solutions digital isolator featuring four independent channels with unidirectional signal paths. It supports data rates up to 1 Mbps and provides 2500 Vrms isolation voltage. The device operates on a supply voltage range of 2.5 V to 5.5 V, consuming 6.6 mA DC input current. Key electrical parameters include a propagation delay of 35 ns, rise time of 4 ns, and power dissipation of 415 mW. It functions within an operating temperature range of -40°C to +125°C and utilizes a 16-pin SOIC package.

Digital Isolators Feature Summary

• Provides high-speed operation with no start-up initialization required
• Supports wide operating supply voltage from 2.5 V to 5.5 V
• Offers general-purpose digital isolation across four channels

Digital Isolators Applications

• General purpose digital isolation
• Industrial process control systems
• Power management circuits

Digital Isolators Procurement Notes

Verify the specific suffix 'IS' against the datasheet to confirm the tube packaging format, as other suffixes like 'ISR' indicate tape and reel. Ensure the component meets AEC-Q100 automotive standards if applicable to the target application. Cross-reference the manufacturer part number with official Skyworks documentation to validate the 1 Mbps speed grade and 2.5 kVrms isolation rating before procurement.

Digital Isolators Selection Notes

Select this component for applications requiring moderate speed (1 Mbps) and robust isolation in a standard 16-pin SOIC footprint. It is suitable where low power consumption and wide voltage tolerance are prioritized over higher data rates. Consider the 35 ns propagation delay when designing timing-critical interfaces. Verify that the 415 mW power dissipation fits within the thermal constraints of the enclosure.

Digital Isolators Part Context

This part belongs to the Si86xx series of capacitive coupling digital isolators from Skyworks Solutions. It shares architectural similarities with other models in the family but is distinguished by its 1 Mbps data rate and 2.5 kVrms isolation capability. The series generally offers CMOS compatibility and requires no external components for basic operation.

Digital Isolators Replacement Considerations

SI8640AB-B-ISR: Identical electrical specifications; differs only in packaging (Tape & Reel vs. Tube).

Digital Isolators FAQ

Does the SI8640AB-B-IS require start-up initialization?

No, the device does not require start-up initialization.

What is the maximum data rate supported by this model?

The maximum data rate is 1 Mbps.