SI8661BD-B-ISR

Digital Isolators Overview

The SI8661BD-B-ISR is a general-purpose digital isolator from Skyworks Solutions Inc., featuring six channels with five forward and one reverse configuration. It operates on a single supply voltage ranging from 2.5 V to 5.5 V and supports data rates up to 150 Mbps. The device provides an isolation voltage of 5000 Vrms and exhibits a minimum common-mode transient immunity of 35 kV/µs. It is housed in a 16-SOIC package with a width of 7.50 mm and functions within a temperature range of -40°C to +125°C.

Digital Isolators Feature Summary

• Provides high-voltage galvanic isolation using capacitive coupling technology for signal transmission between isolated circuits.
• Features unidirectional channel architecture with a specific 5-forward and 1-reverse pinout configuration for flexible system design.
• Delivers high-speed data transmission capabilities suitable for demanding communication protocols at specified bit rates.

Digital Isolators Applications

• Industrial automation systems requiring robust signal isolation
• Medical equipment needing certified electrical safety barriers
• Power electronics interfaces for motor control and inverters

Digital Isolators Procurement Notes

Verify the exact suffix ISR against official Skyworks documentation to confirm tape-and-reel packaging specifications. Ensure the 5000 Vrms isolation rating aligns with your system's safety requirements. Cross-reference the 16-SOIC package dimensions with your PCB footprint constraints. Confirm that the 2.5 V to 5.5 V supply range matches your logic levels. Validate the 150 Mbps data rate sufficiency for your application bandwidth needs before finalizing procurement.

Digital Isolators Selection Notes

Select this component when high isolation voltage and moderate speed are required in a compact surface-mount package. The 5-forward, 1-reverse configuration suits applications needing multiple outputs from a single input source. Consider the 35 kV/µs CMTI rating for environments with rapid voltage transients. Evaluate the SOIC-16 form factor for compatibility with existing assembly lines. Compare power consumption metrics against alternative isolators if energy efficiency is critical.

Digital Isolators Part Context

This part belongs to the Si86xx family of digital isolators, which utilize Skyworks' proprietary capacitive isolation technology. The family offers various channel counts and isolation ratings to address diverse industrial and commercial needs. The SI8661 variant specifically targets applications requiring six-channel isolation with high reliability and low propagation delay characteristics.

Digital Isolators Replacement Considerations

Check Skyworks datasheets for direct pin-compatible alternatives within the Si866x series. Verify if lower isolation ratings or different channel configurations meet your design requirements. Ensure any substitute maintains the same 16-SOIC package outline and thermal performance characteristics.