SI8451BA-A-IS1R

Overview

The SI8451BA-A-IS1R is a five-channel digital isolator from Skyworks Solutions, utilizing capacitive coupling technology. It features four unidirectional forward channels and one reverse channel within a SOIC-Narrow-16 package. The device supports data rates up to 150 Mb/s with an insulation voltage of 1000 Vrms. Operating on a supply voltage range of 2.7 V to 5.5 V, it exhibits a propagation delay of 6 ns and operates across a temperature range of -40°C to +125°C.

Feature Summary

• Integrates five isolated channels with four forward and one reverse configuration for versatile signal routing.
• Employs high-reliability capacitive coupling architecture to ensure robust electrical isolation between circuits.
• Includes a dedicated shutdown pin to minimize power consumption during inactive periods.

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment signal processing interfaces
• Power electronics control circuitry

Procurement Notes

Verify the component lifecycle status before procurement, as this part may be marked as Not Recommended for New Designs (NRND). Confirm that the SOIC-Narrow-16 package dimensions and moisture sensitivity levels align with your assembly process requirements. Ensure compatibility with the specified 2.7 V to 5.5 V operating voltage range for your target application design.

Selection Notes

Select this component when a combination of moderate speed (150 Mb/s) and high channel count (five channels) is required in a compact footprint. It is suitable for designs needing unidirectional isolation with a single return path. Consider the thermal performance and power dissipation characteristics relative to the expected ambient operating conditions and board layout constraints.

Part Context

This device belongs to the SI8451 family of digital isolators, which are designed to replace traditional optocouplers in modern electronic systems. The family offers improved performance metrics including lower power consumption, smaller physical size, and higher reliability compared to legacy isolation technologies.

Replacement Considerations

Check for updated revisions or alternative Skyworks models if new design approval is required due to the NRND status. Verify pinout compatibility if substituting with other devices in the same series.