SI86S640EC-AS1

Overview

The SI86S640EC-AS1 is an automotive-grade digital isolator from Skyworks Solutions, featuring four unidirectional channels. It utilizes capacitive coupling technology to provide electrical isolation with a rated insulation voltage of 3750 Vrms. The device supports data rates up to 150 Mbps and offers a common-mode transient immunity (CMTI) of 150 kV/µs. It operates within a supply voltage range of 3 V to 5.5 V and functions reliably across an extended temperature range from -40°C to +125°C. The component is housed in a 16-pin SOIC package with a 0.154-inch width.

Feature Summary

• Automotive qualification for reliable operation in vehicle environments
• High-speed data transmission capability supporting up to 150 Mbps
• Robust noise immunity with 150 kV/µs common-mode transient rejection
• Low power consumption design suitable for energy-efficient systems

Applications

• Automotive infotainment and display interfaces
• Battery management system communication
• Inverter gate drive isolation
• On-board charger signal isolation

Procurement Notes

Verify the specific suffix AS1 against the manufacturer's datasheet to ensure correct packaging and tape-and-reel specifications. Confirm that the component meets the required AEC-Q100 reliability standards for your specific automotive application tier. Check for lead-free compliance and RoHS status as indicated in the official documentation before finalizing procurement.

Selection Notes

Select this component when four isolated bidirectional or unidirectional channels are required for high-speed automotive data links. Ensure the system voltage requirements align with the 3 V to 5.5 V operating range. Consider the 150 kV/µs CMTI rating if the environment contains significant high dv/dt noise, such as near motor drives or inverters, to prevent signal corruption.

Part Context

This part belongs to the Si86S6x series of automotive digital isolators. It is designed to replace bulky magnetic isolators in modern electronic control units. The series emphasizes low jitter and high reliability for safety-critical applications. It complements other Skyworks interface solutions by providing robust galvanic isolation between microcontrollers and peripheral devices.

Replacement Considerations

Check for direct pin-compatible alternatives within the Si86S6x family, such as variants with different channel counts or polarity configurations. Verify that any substitute maintains the same 3750 Vrms insulation rating and 150 Mbps data rate. Ensure the replacement part also holds necessary automotive certifications if used in production vehicles.