SI88420ED-ISR

Digital Isolators Overview

The SI88420ED-ISR is a Skyworks Solutions digital isolator featuring two unidirectional channels with integrated DC-DC converter capability. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 100 Mb/s. The device provides an insulation voltage of 5000 Vrms and exhibits a common mode transient immunity of 40 kV/µs. Propagation delay is specified at 18 ns maximum, with rise and fall times of 2.5 ns. It functions reliably across an operating temperature range of -40°C to +125°C and is housed in a 16-SOIC (Wide) package.

Digital Isolators Feature Summary

• Integrates capacitive coupling isolation technology for signal transmission
• Includes built-in DC-DC converter functionality for isolated power generation
• Provides high common mode transient immunity for noise resilience

Digital Isolators Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reliable signal separation
• General purpose digital isolation interfaces

Digital Isolators Procurement Notes

Verify the specific suffix 'ED' confirms the inclusion of the internal DC-DC converter, as this distinguishes it from standard isolator variants. Confirm the SOIC-Wide-16 package dimensions match your PCB footprint requirements. Check current availability status, as some listings indicate restricted supply or not recommended for new designs depending on the region and distributor.

Digital Isolators Selection Notes

Select this component when both signal isolation and isolated power generation are required in a single package. Ensure the 100 Mb/s data rate meets system timing requirements. Verify that the 5000 Vrms isolation rating satisfies safety standards for the application's voltage domains. Consider the thermal dissipation capabilities given the power consumption specifications.

Digital Isolators Part Context

This part belongs to the Si8842x series of digital isolators from Skyworks Solutions. It is designed for applications demanding robust isolation performance in compact packages. The series typically includes variants with different channel counts and integration levels, such as those without the DC-DC converter.

Digital Isolators Replacement Considerations

SI88420BD-ISR is a related variant in the same series but utilizes a SOIC-Wide-16 package and may lack the DC-DC converter integration found in the ED suffix version. Cross-reference datasheets to confirm functional equivalence regarding the power conversion features.