SI86SM40EC-AS1R

Digital Isolators Overview

The SI86SM40EC-AS1R is a four-channel SPI digital isolator from Skyworks Solutions, designed for automotive applications. It provides galvanic isolation between voltage domains with a rated insulation of 3750 Vrms. The device features unidirectional signal transmission and supports data rates up to 150 Mbps. It includes a sleep mode for power optimization and offers common-mode transient immunity of 150 kV/µs. Packaged in a 16-SOIC (0.154 inch width) surface-mount package, it operates within an extended temperature range suitable for harsh environments.

Digital Isolators Feature Summary

• Provides robust galvanic isolation for automotive-grade electronic circuits
• Integrates four unidirectional channels optimized for SPI communication
• Includes low-power sleep mode functionality for energy efficiency
• Delivers high common-mode transient immunity for noise resilience

Digital Isolators Applications

• Automotive sensor interface isolation
• Inverter gate drive control loops
• Battery management system communication
• Motor control unit signal isolation

Digital Isolators Procurement Notes

Verify the specific suffix AS1R indicates reel packaging when sourcing components. Confirm that the EC designation aligns with required automotive qualification standards for your specific application environment. Ensure compatibility with the 16-SOIC footprint during PCB layout finalization. Cross-reference the datasheet revision date to ensure all electrical characteristics match your design requirements before procurement.

Digital Isolators Selection Notes

Select this component when designing systems requiring isolated SPI interfaces in automotive contexts. It is suitable for applications needing moderate data throughput with high noise immunity. Consider the 16-SOIC package constraints for board space. Evaluate the sleep mode benefits against active power consumption needs. Ensure the input/output voltage domains are compatible with the isolator's rating limits.

Digital Isolators Part Context

This part belongs to the Si86SM4x series of digital isolators from Skyworks Solutions. The series focuses on providing reliable isolation for automotive and industrial applications. It complements other devices like the SI86SL4x series by offering specific SPI optimization. The family emphasizes low power consumption and high reliability in electric vehicle architectures.

Digital Isolators Replacement Considerations

Check for direct pin-compatible alternatives within the Si86SM4x family. Verify if the SI86SL4x series meets the isolation voltage and channel count requirements. Ensure any substitute maintains the same SOIC-16 package and automotive qualification status.