SI8640ET-AS

Digital Isolators Overview

The SI8640ET-AS is a Skyworks Solutions digital isolator featuring four unidirectional channels with capacitive coupling technology. It provides an insulation voltage of 5000 Vrms and supports data rates up to 150 Mb/s. The device operates within a supply voltage range of 2.375 V to 5.5 V, drawing a typical operating current of 6.1 mA per channel. Key electrical parameters include a propagation delay of 8 ns, rise/fall times of 4 ns, and pulse width distortion of 0.2 ns. It is housed in a 16-pin SOIC-Wide package and is qualified for automotive applications under AEC-Q100 standards.

Digital Isolators Feature Summary

• Four-channel unidirectional signal isolation using capacitive coupling technology
• High insulation capability rated at 5000 Vrms for robust noise immunity
• Automotive qualification compliant with AEC-Q100 reliability standards

Digital Isolators Applications

• Automotive powertrain control systems
• Inverter gate drive circuits
• Motor control interfaces
• Industrial communication bus isolation

Digital Isolators Procurement Notes

Verify the specific suffix 'ET' corresponds to the required tape-and-reel packaging configuration rather than tube packaging when sourcing. Confirm that the component meets the AEC-Q100 grade requirements for your target automotive application environment. Ensure the selected distributor provides traceability documentation consistent with Skyworks Solutions manufacturing standards.

Digital Isolators Selection Notes

Select this component for designs requiring four isolated bidirectional or unidirectional paths with high surge immunity. The 150 Mb/s data rate supports standard CAN FD and LIN protocols. Consider the 8 ns propagation delay for timing-critical applications. The SOIC-Wide package facilitates PCB layout compared to narrower alternatives.

Digital Isolators Part Context

This part belongs to the Si864x family of ultra-low power digital isolators from Skyworks Solutions. The family utilizes proprietary CMOS-SOI technology to achieve high performance with low power consumption. The SI8640ET-AS specifically targets automotive markets, offering enhanced reliability and thermal stability compared to general-purpose industrial variants.

Digital Isolators Replacement Considerations

Direct substitutes within the same series include SI8640BT-ASR, which shares identical electrical specifications but differs in packaging format. Verify that any replacement maintains the AEC-Q100 qualification status if automotive compliance is mandatory.