SI88621EC-IS

Overview

The SI88621EC-IS is a Skyworks Solutions digital isolator featuring two unidirectional channels and an integrated DC-DC converter. It operates within a supply voltage range of 3 V to 5.5 V, consuming 8 mA of operating current. The device provides 3750 Vrms isolation via capacitive coupling and supports data rates up to 100 Mb/s. Key timing parameters include an 18 ns propagation delay, 2.5 ns rise/fall times, and 4.5 ns pulse width distortion. It functions reliably between -40°C and +125°C in a 20-SOIC package.

Feature Summary

• Integrates a high-efficiency DC-DC converter for isolated power generation
• Provides robust signal isolation through capacitive coupling technology
• Supports high-speed data transmission with low propagation delay

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reliable signal separation
• Power electronics interfaces with ground potential differences

Procurement Notes

Verify the specific suffix 'IS' corresponds to tube packaging rather than tape-and-reel formats when sourcing components. Confirm that the integrated DC-DC converter requirements align with the target application's power budget. Ensure compatibility with the 20-SOIC footprint during PCB layout. Cross-reference the manufacturer datasheet for latest revision notes regarding electrical characteristics and thermal performance specifications.

Selection Notes

Select this component when both signal isolation and isolated power delivery are required in a single package. The integrated DC-DC converter eliminates the need for external magnetic components, simplifying design. Consider the 100 Mb/s data rate limit for high-speed communication needs. Evaluate the 3750 Vrms insulation rating against system safety standards. The wide temperature range suits harsh industrial environments.

Part Context

Part of the Si88621 series designed for applications demanding combined isolation and power conversion. This family addresses space-constrained designs by integrating functions typically handled by separate components. The series emphasizes reliability and efficiency in noisy electromagnetic environments common in modern electronic systems.

Replacement Considerations

SI88621BC-IS offers similar functionality with AEC-Q100 automotive qualification.

FAQ

What is the maximum data rate supported by this isolator?

The SI88621EC-IS supports a maximum data rate of 100 Mb/s.

Does this component include an isolated power supply?

Yes, it features an integrated DC-DC converter for generating isolated power.