SI88440EC-ISR

Overview

The SI88440EC-ISR is a Skyworks Solutions digital isolator featuring four unidirectional channels with an integrated DC-DC converter. It provides 5000 Vrms isolation via capacitive coupling and supports data rates up to 100 Mb/s. The device operates within a supply voltage range of 3 V to 5.5 V, offering a propagation delay of 18 ns and rise/fall times of 2.5 ns. It is housed in a SOIC-Wide-20 package, rated for operation between -40°C and +125°C, and includes a shutdown function.

Feature Summary

• Integrates four isolated digital channels with a built-in DC-DC converter for power delivery across the isolation barrier.
• Utilizes silicon dioxide-based capacitive coupling technology to ensure high reliability and immunity to magnetic fields.
• Features ultra-low power consumption characteristics suitable for energy-efficient system designs.

Applications

• Industrial automation systems requiring robust signal isolation
• Medical equipment needing high-voltage safety compliance
• Power electronics interfaces such as motor drives and inverters

Procurement Notes

Verify that the specific suffix 'ISR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the 5000 Vrms insulation rating aligns with the safety standards mandated by the target application environment. Ensure compatibility with the SOIC-Wide-20 footprint during PCB layout validation.

Selection Notes

Select this component when high-density isolation is required alongside integrated power conversion capabilities. The unidirectional channel configuration suits applications where signal flow is strictly one-way. Consider the thermal performance and power dissipation limits relative to the expected operating temperature range of the final assembly.

Part Context

This part belongs to the Si8844x family of digital isolators from Skyworks Solutions. These devices are designed to replace traditional optocouplers, offering superior speed, size, and power efficiency. The series emphasizes reliability through solid-state construction and advanced manufacturing processes.

Replacement Considerations

SI88440EC-IS (Tube Packaging)

FAQ

What is the isolation voltage rating for this device?

The SI88440EC-ISR provides an insulation voltage of 5000 Vrms.

Does this component include a power converter?

Yes, it features an integrated DC-DC converter to provide isolated power to the secondary side.