SI88620BC-ISR

Overview

The SI88620BC-ISR is a Skyworks Solutions digital isolator featuring two unidirectional channels with integrated DC-DC converter capability. It provides 5000 Vrms isolation voltage and supports data rates up to 100 Mb/s. The device operates on a supply voltage range of 3 V to 5.5 V, with a maximum propagation delay of 18 ns. It utilizes capacitive coupling technology and is housed in a 20-SOIC package.

Feature Summary

• Integrates high-speed digital signal isolation with an internal isolated power supply architecture.
• Provides robust noise immunity through capacitive coupling technology designed for harsh electromagnetic environments.
• Supports bidirectional communication within the specified channel configuration while maintaining galvanic isolation.

Applications

• Industrial automation systems requiring reliable signal transmission across isolation barriers
• Programmable logic controller (PLC) input/output modules
• Motor drive control circuits needing isolated gate or feedback signals

Procurement Notes

Verify the specific suffix 'BC' indicates the required insulation voltage rating and 'ISR' confirms the tape-and-reel packaging format. Confirm RoHS compliance status and check for any recent product change notices regarding the SOIC-20 package dimensions. Ensure the selected variant matches the system's thermal and electrical requirements before finalizing the order.

Selection Notes

Select this component when a combination of signal isolation and integrated power delivery is necessary to reduce external component count. Consider the 5000 Vrms isolation rating for safety-critical applications. Evaluate the 100 Mb/s data rate against system timing constraints. Verify that the 20-SOIC footprint fits the PCB layout and that the operating temperature range meets environmental specifications.

Part Context

This part belongs to the Si88xx ISOvolt family, which combines digital isolators with isolated DC-DC converters. This integration simplifies design by providing both signal and power isolation in a single package, reducing board space compared to discrete solutions.

Replacement Considerations

SI88620BC-IS is a parameter-equivalent alternative available in tube packaging instead of tape-and-reel. Other variants in the Si88620 series may offer different insulation ratings or channel counts but require verification of pinout and electrical compatibility.