SI8735BC-IS

Digital Isolators Overview

The SI8735BC-IS is a single-channel digital isolator from Skyworks Solutions, utilizing capacitive coupling technology. It operates within a supply voltage range of 2.5 V to 5.5 V and supports data rates up to 15 Mb/s. The device provides an isolation voltage of 2500 Vrms with a typical common-mode transient immunity (CMTI) of 25 kV/µs. Key timing parameters include a maximum propagation delay of 50 ns and rise/fall times of approximately 2.5 ns. It functions reliably across an extended temperature range from -40°C to +125°C and is housed in an 8-SOIC package.

Digital Isolators Feature Summary

• Capacitive coupling architecture for high-speed signal transmission
• Unidirectional channel design for general-purpose isolation
• High common-mode transient immunity capability
• Drop-in replacement compatibility for optocouplers

Digital Isolators Applications

• General-purpose digital signal isolation
• Optocoupler replacement in industrial systems
• Microcontroller interface isolation
• Gate driver isolation circuits

Digital Isolators Procurement Notes

Verify the specific suffix 'IS' confirms the 8-SOIC surface-mount package variant. Confirm that the required isolation rating meets the 2500 Vrms specification rather than higher-rated variants like the SI8736 series. Ensure the unidirectional configuration aligns with the circuit design requirements before procurement.

Digital Isolators Selection Notes

Select this component when a single-channel, unidirectional isolator is required for general-purpose applications. It is suitable for designs needing moderate data rates up to 15 Mbps with robust transient immunity. Consider the 8-SOIC footprint for PCB layout constraints and verify that the 2.5 V to 5.5 V supply range matches the system power rails.

Digital Isolators Part Context

This part belongs to the Si87xx family of digital isolators from Skyworks Solutions. These devices are engineered as pin-compatible, drop-in replacements for popular optocouplers. The family utilizes proprietary capacitive coupling technology to provide reliable isolation without the limitations associated with optical components, such as aging or current transfer ratio variations.

Digital Isolators Replacement Considerations

• SI8735BC-ISR

Digital Isolators FAQ

What is the typical common-mode transient immunity (CMTI) for the SI8735BC-IS?

The typical CMTI for this device is 25 kV/µs.

Is the SI8735BC-IS bidirectional?

No, it is a unidirectional digital isolator with one forward channel and zero reverse channels.