SI88642ED-ISR

Overview

The SI88642ED-ISR is a Skyworks Solutions digital isolator featuring four channels with integrated DC-DC conversion. It provides 5000 Vrms isolation using capacitive coupling technology. The device supports data rates up to 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, rise/fall times of 2.5 ns, and a common-mode transient immunity of 40 kV/µs. It functions in temperatures from -40°C to +125°C and is housed in a 24-SOIC package.

Feature Summary

• Integrates an isolated DC-DC converter for power delivery across the isolation barrier
• Provides high-speed signal transmission with 100 Mb/s data rate capability
• Features robust noise immunity with 40 kV/µs common-mode transient rejection

Applications

• Industrial automation control systems
• Medical equipment signal isolation
• Power electronics gate drive interfaces

Procurement Notes

Verify component authenticity through authorized distributors due to the NRND status. Confirm that the specific ISR suffix corresponds to the tape and reel packaging format required for automated assembly processes. Ensure compliance with RoHS directives and check for any recent product change notifications affecting specifications or availability before finalizing procurement plans.

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 high CMTI performance in noisy environments. Consider the 24-SOIC package dimensions and thermal dissipation characteristics during PCB layout. Evaluate the trade-off between the integrated DC-DC power consumption and external power supply options for the secondary side.

Part Context

This part belongs to the Si8864x series of digital isolators from Skyworks Solutions. It is designed for general-purpose applications requiring reliable signal transmission across isolation barriers. The series utilizes proprietary capacitive coupling technology to achieve high reliability and low skew compared to traditional magnetic isolation methods.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.