SI88422ED-IS

Digital Isolators Overview

The SI88422ED-IS is a general-purpose digital isolator manufactured by Skyworks Solutions Inc. It features two unidirectional channels with an integrated DC-DC converter, providing galvanic isolation up to 5000 Vrms. The device supports data rates of 100 Mb/s and operates within a supply voltage range of 3 V to 5.5 V. Key electrical parameters include a propagation delay of 18 ns (maximum), a common-mode transient immunity of 40 kV/µs, and a pulse width distortion of 7 ns (maximum). It is qualified under AEC-Q100 standards for automotive applications and functions reliably across a temperature range of -40°C to +125°C.

Digital Isolators Feature Summary

• Integrates a high-efficiency isolated DC-DC converter to power the secondary side, eliminating the need for external isolated power supplies.
• Utilizes capacitive coupling technology to provide robust signal transmission with high common-mode transient immunity.
• Features a wide operating temperature range suitable for demanding industrial and automotive environments.

Digital Isolators Applications

• Automotive electronic control units requiring certified isolation
• Industrial communication interfaces such as RS-485 and CAN bus
• Power inverter gate drive circuits

Digital Isolators Procurement Notes

Verify the specific suffix 'ED' confirms the SOIC-Wide-16 package and standard insulation ratings before ordering. Confirm that the integrated DC-DC converter meets the target application's power requirements. Ensure compliance with AEC-Q100 qualification if used in automotive contexts. Check current availability status as production cycles may vary.

Digital Isolators Selection Notes

Select this component when a compact solution with built-in isolated power is required for two-channel signal isolation. Compare against non-isolated alternatives for safety compliance. Consider the 16-pin SOIC footprint constraints during PCB layout. Evaluate thermal performance given the internal DC-DC converter operation at maximum load conditions.

Digital Isolators Part Context

This part belongs to the Si88422 series of digital isolators from Skyworks Solutions. It is designed to replace optocouplers in modern systems, offering superior speed and reliability. The series includes variants with different channel counts and packaging options to suit diverse interface needs.

Digital Isolators Replacement Considerations

• SI88422BC-ISR

Digital Isolators FAQ

Does the SI88422ED-IS require an external isolated power supply?

No, it includes an integrated DC-DC converter that generates the necessary isolated power for the output side.

What is the maximum common-mode transient immunity of this device?

The device provides a minimum common-mode transient immunity of 40 kV/µs.