SI8635ET-IS

Digital Isolators Overview

The SI8635ET-IS is a general-purpose digital isolator from the Skyworks si863x series, featuring three unidirectional channels. It operates within a supply voltage range of 2.5 V to 5.5 V and supports data rates up to 150 Mb/s. The device provides 5000 Vrms isolation voltage with 10 kV surge capability and exhibits a common mode transient immunity of 60 kV/µs. Key timing parameters include an 8 ns propagation delay, 4 ns rise/fall times, and 5 ns pulse width. It is housed in a 16-pin SOIC-Wide package and is qualified under AEC-Q100 standards for automotive applications.

Digital Isolators Feature Summary

• Capacitive coupling technology enables high-speed digital signal transmission across isolation barriers.
• Integrated shutdown function allows for low-power standby modes when not actively transmitting data.
• High common mode transient immunity ensures reliable operation in electrically noisy environments.

Digital Isolators Applications

• Automotive electronic control units requiring robust galvanic isolation
• Industrial communication interfaces such as RS-485 and CAN bus systems
• Medical equipment needing safety-certified signal isolation

Digital Isolators Procurement Notes

Verify the specific suffix IS2 against official Skyworks documentation to confirm pinout and functional compatibility. Ensure the procurement source provides valid RoHS compliance certificates. Confirm that the delivered components match the AEC-Q100 qualification status required for your application environment. Check for moisture sensitivity level indicators on packaging to prevent handling damage prior to reflow soldering.

Digital Isolators Selection Notes

Select this component when three unidirectional isolated channels are required for general-purpose digital signaling. The 150 Mb/s data rate suits most standard industrial and automotive protocols. Consider the 16-pin wide SOIC package for PCB layout flexibility. Verify that the 5000 Vrms isolation rating meets the safety requirements of your system design compared to higher voltage alternatives in the si86xx family.

Digital Isolators Part Context

This part belongs to the si863x family of digital isolators designed for high-reliability applications. The series utilizes proprietary CMOS-SiO2-CMOS technology to provide superior performance over traditional transformer-based isolators. The SI8635 variant specifically offers a 3-channel configuration, distinguishing it from 1-channel or 2-channel counterparts like the SI862x series.

Digital Isolators Replacement Considerations

Direct replacements within the same family include SI8635BB-B-IS for similar specifications. Cross-family substitution requires verifying channel count, isolation voltage ratings, and package dimensions against the original design constraints.