SI8661ED-B-ISR

Digital Isolators Overview

The SI8661ED-B-ISR is a six-channel digital isolator from Skyworks Solutions, housed in a 16-pin SOIC-Wide package. It provides 5 kVrms isolation voltage with capacitive coupling technology. The device supports data rates up to 150 Mbps and features a propagation delay of 8 ns. It operates on supply voltages between 2.375 V and 5.5 V. The configuration includes five forward channels and one reverse channel, all unidirectional. It functions within a temperature range of -40°C to +125°C.

Digital Isolators Feature Summary

• Provides high-speed signal transmission with low propagation delay for efficient data integrity.
• Utilizes capacitive coupling to ensure robust electrical isolation without magnetic interference.
• Eliminates the need for start-up initialization, allowing immediate operation upon power application.

Digital Isolators Applications

• Industrial automation control systems
• Power supply monitoring circuits
• Inverter gate drive interfaces

Digital Isolators Procurement Notes

Verify the specific suffix 'ED' confirms the 5 kVrms insulation rating and wide SOIC package before ordering. Ensure the reverse channel requirement matches the single-channel configuration. Confirm that the 150 Mbps speed meets system timing requirements. Check for AEC-Q100 qualification if automotive compliance is necessary, as this variant may differ from standard industrial grades.

Digital Isolators Selection Notes

Select this component when high isolation voltage is critical alongside moderate-to-high data throughput. The wide SOIC package facilitates PCB layout compared to narrow variants. Consider the unidirectional nature of the channels for circuit topology. Evaluate the 8 ns delay against system clock speeds to prevent timing violations in high-frequency applications.

Digital Isolators Part Context

This part belongs to the Si86xx family of digital isolators, which are designed to replace traditional transformer and optocoupler solutions. The series offers various channel counts and isolation ratings. The SI8661ED-B-ISR specifically targets applications requiring six isolated channels with high voltage withstand capability in a surface-mount format.

Digital Isolators Replacement Considerations

SI8661EB-B-IUR offers similar functionality but with 2.5 kVrms isolation and a QSOP-16 package. SI8661AB-B-IS1 provides lower speed (1 Mb/s) and different packaging. Verify pinout compatibility and isolation voltage requirements when substituting.