SI88241BC-IS

Overview

The SI88241BC-IS is a quad digital isolator manufactured by Skyworks Solutions, Inc., featuring an integrated DC-DC converter. It provides four channels with three unidirectional inputs on the primary side and one on the secondary side. The device supports data rates up to 100 Mb/s and offers an insulation voltage of 5000 Vrms. Key electrical parameters include a propagation delay of 18 ns, a maximum rise/fall time of 2.5 ns, and a common mode transient immunity of 40 kV/µs. It operates within a supply voltage range of 3 V to 5.5 V and functions across a temperature range of -40°C to +125°C.

Feature Summary

• Integrates a high-efficiency DC-DC converter for isolated power generation
• Provides robust capacitive coupling isolation with high CMTI
• Supports high-speed data transmission at 100 Mbps
• Features a shutdown pin for power management control

Applications

• Industrial automation systems requiring galvanic isolation
• Power supply circuits with isolated feedback loops
• Medical equipment needing high-voltage safety isolation
• Inverter drives and motor control applications

Procurement Notes

Verify the specific suffix 'IS' corresponds to the SOIC-Wide-20 package and tube packaging configuration as listed in official Skyworks documentation. Confirm that the component meets RoHS standards and check for any recent Product Change Notifications (PCNs) that may affect specifications or manufacturing location. Ensure compatibility with your PCB footprint requirements before finalizing orders.

Selection Notes

Select this component when a single-chip solution combining four-channel isolation and integrated power conversion is required. It is suitable for designs needing 5000 Vrms isolation strength and 40 kV/µs CMTI. Consider the 18 ns propagation delay and 100 Mbps data rate limits for signal integrity planning. Evaluate the thermal performance given the 2.27 W power dissipation capability if operating near maximum temperatures.

Part Context

This part belongs to the Si8824x family of digital isolators from Skyworks Solutions. The family is designed to replace traditional optocouplers in modern electronic systems, offering higher reliability, smaller form factors, and better performance consistency. The SI88241BC-IS specifically addresses applications requiring multiple isolated channels with onboard power generation, simplifying the bill of materials compared to discrete solutions.

Replacement Considerations

Direct replacements within the same series include the SI88240BC-IS and SI88243BD-IS, though channel configurations and insulation voltages may vary. Verify pinout compatibility and functional equivalence against the datasheet before substitution. Note that some variants may be marked as Not Recommended for New Designs (NRND); consult current Skyworks availability lists for active alternatives.