SI88440ED-ISR

Overview

The SI88440ED-ISR is a Skyworks Solutions digital isolator featuring four unidirectional channels with an integrated DC-DC converter. It operates within a supply voltage range of 3 V to 5.5 V and provides 5000 Vrms insulation via capacitive coupling. The device supports data rates up to 100 Mb/s, with a propagation delay of 18 ns and rise/fall times of 2.5 ns. It functions between -40°C and +125°C, housed in a SOIC-Wide-20 package.

Feature Summary

• Integrates a high-efficiency DC-DC converter for isolated power generation
• Provides robust capacitive coupling isolation technology
• Includes a shutdown function for power management

Applications

• Industrial automation systems
• Power electronics interfaces
• General-purpose digital isolation

Procurement Notes

Verify the NRND status before procurement, as this component is not recommended for new designs. Confirm the specific SOIC-Wide-20 reel packaging requirements. Ensure compatibility with existing circuit layouts due to potential obsolescence constraints.

Selection Notes

Select this model for applications requiring four-channel unidirectional isolation with integrated power conversion. Consider the 5000 Vrms rating for high-voltage separation needs. Evaluate the 100 Mb/s speed against system timing requirements.

Part Context

This part belongs to the Si88440 series of digital isolators. It shares family characteristics with other variants like the SI88440BD-ISR but differs in insulation voltage ratings and packaging configurations. The series emphasizes compact integration of isolation and power management.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.