SI88243BC-IS

Digital Isolators Overview

The SI88243BC-IS is a general-purpose digital isolator from Skyworks Solutions Inc. It features four unidirectional channels with an integrated DC-DC converter, providing galvanic isolation via capacitive coupling. The device supports data rates up to 100 Mb/s and offers a high common-mode transient immunity of 40 kV/µs. It operates within a supply voltage range of 3 V to 5.5 V and provides an insulation voltage of 5000 Vrms. The component is housed in a 20-SOIC package and is qualified under AEC-Q100 standards for automotive applications.

Digital Isolators Feature Summary

• Integrates a high-efficiency isolated DC-DC converter to power the secondary side without external components.
• Utilizes silicon dioxide (SiO2) capacitive coupling technology for robust signal transmission across isolation barriers.
• Provides high common-mode transient immunity to ensure reliable operation in electrically noisy environments.

Digital Isolators Applications

• Automotive electronic control units requiring AEC-Q100 qualification
• Industrial communication interfaces such as RS-485 and CAN bus
• Medical equipment requiring reinforced galvanic isolation

Digital Isolators Procurement Notes

Verify the specific suffix 'IS' against the official datasheet to confirm the package type and temperature grade. Ensure that the integrated DC-DC converter requirements align with the target application's power budget. Confirm availability status as some variants may be subject to production lifecycle changes or obsolescence notices.

Digital Isolators Selection Notes

Select this component when a single-chip solution combining isolation and power conversion is required. The 4-channel configuration suits parallel data lines. Consider the 20-SOIC footprint for PCB layout constraints. Verify that the 5000 Vrms insulation rating meets the safety standards of the end system.

Digital Isolators Part Context

This part belongs to the Si88x4x family of digital isolators from Skyworks Solutions. These devices are designed to replace traditional optocouplers, offering superior performance in speed, power consumption, and reliability. The family includes variants with and without integrated power supplies, catering to diverse system isolation needs.

Digital Isolators Replacement Considerations

Public confirmed substitute part numbers: SI88243BD-IS, SI88243ED-IS, SI88243BC-ISR.