SI8451BB-B-IS1R

Overview

The SI8451BB-B-IS1R is a five-channel digital isolator from Skyworks Solutions, utilizing capacitive coupling technology. It features four unidirectional forward channels and one reverse channel, supporting data rates up to 150 Mb/s with a propagation delay of 6 ns. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V and provides an isolation voltage of 2500 Vrms. Packaged in a 16-pin SOIC-Narrow, it functions within a temperature range of -40°C to +125°C.

Feature Summary

• Integrates four forward and one reverse channel for versatile signal routing
• Employs high-reliability capacitive coupling for galvanic isolation
• Includes a shutdown pin for power management control

Applications

• Industrial automation systems requiring multi-channel isolation
• Medical equipment needing reliable signal separation
• Power metering applications with bidirectional data needs

Procurement Notes

Verify the NRND status before procurement, as this component is not recommended for new designs. Confirm package integrity upon receipt due to moisture sensitivity classification. Ensure compatibility with existing PCB footprints for the SOIC-Narrow-16 configuration during integration planning.

Selection Notes

Choose this part when a mix of forward and reverse signal paths is required within a single isolated barrier. It suits designs needing moderate speed at 150 Mb/s with low propagation delay. Consider the shutdown feature if active power reduction is necessary during idle periods in the system architecture.

Part Context

This component belongs to the SI845x series of general-purpose digital isolators. It shares the SOIC-Narrow-16 footprint with other variants like the SI8450 but differs in insulation voltage and channel directionality. The series is designed for robust performance in noisy environments across industrial and automotive sectors.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official Skyworks resources for current alternatives or updated components replacing this NRND part.