SI8661EC-AS1

Digital Isolators Overview

The SI8661EC-AS1 is a unidirectional digital isolator from the Si866x series, manufactured by Skyworks Solutions. It features six channels with five forward and one reverse configuration, housed in an SOIC-16 package. The device supports a data rate of 150 Mb/s and offers an insulation voltage of 3750 Vrms using capacitive coupling technology. Operating on a supply voltage range of 2.5 V to 5.5 V, it draws a typical operating current of 7.9 mA. Key electrical parameters include a propagation delay of 8 ns, rise and fall times of 4 ns, and a pulse width of 5 ns. It functions within a temperature range of -40°C to +125°C.

Digital Isolators Feature Summary

• Provides high-speed signal isolation with a 150 Mb/s data rate for reliable communication across isolation barriers.
• Integrates six independent channels configured as five forward and one reverse path for flexible system design.
• Utilizes capacitive coupling technology to achieve robust electrical isolation without magnetic components.

Digital Isolators Applications

• Automotive electronic control units requiring certified isolation
• Industrial automation systems needing high-voltage barrier protection
• Power electronics interfaces for motor drives and inverters

Digital Isolators Procurement Notes

Verify that the specific part number matches the required insulation voltage and channel configuration for your application. Confirm that the SOIC-16 package dimensions align with your PCB layout constraints. Ensure that the operating temperature range meets the environmental requirements of the final assembly. Check for any specific automotive qualification certifications if the component is intended for vehicle integration.

Digital Isolators Selection Notes

Select this model when a unidirectional isolator with six channels is required for high-speed data transmission. Consider the 3750 Vrms insulation rating for applications demanding significant voltage separation between circuits. Evaluate the 7.9 mA power consumption against system energy efficiency targets. Compare the 8 ns propagation delay with timing requirements of the connected protocols to ensure signal integrity.

Digital Isolators Part Context

This component belongs to the Si866x family of digital isolators, which are designed for general-purpose isolation applications. The family combines high-speed performance with low power consumption, utilizing Skyworks' proprietary capacitive isolation technology. These devices are suitable for replacing traditional optocouplers in modern electronic designs where size, speed, and reliability are critical factors.

Digital Isolators Replacement Considerations

Direct replacements may include other variants within the Si866x series such as the SI8661BC-AS1 or SI8661BD-B-IS1, depending on specific insulation voltage and package requirements. Verify compatibility regarding channel count, polarity, and operating temperature range before substitution.