SI8642ET-IS2

Digital Isolators Overview

The SI8642ET-IS2 is a four-channel digital isolator from the Si864x series, manufactured by Skyworks Solutions. It features capacitive coupling technology with a 5000 Vrms insulation voltage and supports data rates up to 150 Mb/s. The device operates on a supply voltage between 2.375 V and 5.5 V, consuming 4.4 mA of current. It offers an 8 ns propagation delay with 4 ns rise and fall times. Packaged in a SOIC-16 format, it is AEC-Q100 qualified for automotive applications and functions within a temperature range of -40°C to +125°C.

Digital Isolators Feature Summary

• Provides high-voltage isolation via capacitive coupling technology
• Supports bidirectional signal transmission with two forward and two reverse channels
• Certified for automotive reliability under AEC-Q100 standards
• Operates at high data speeds suitable for general-purpose interface applications

Digital Isolators Applications

• Automotive electronic control units requiring galvanic isolation
• Industrial communication interfaces such as CAN and LIN buses
• Power conversion systems needing feedback loop isolation
• Medical equipment requiring patient safety isolation barriers

Digital Isolators Procurement Notes

Verify the specific suffix ET-IS2 against official Skyworks documentation to confirm package type and tape-and-reel configuration. Ensure the component meets AEC-Q100 grade requirements if used in automotive contexts. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Confirm that the 5 kV isolation rating aligns with system safety standards before integration.

Digital Isolators Selection Notes

Select this component when high channel count and robust automotive qualification are required. The 150 Mb/s speed suits most standard industrial protocols. Consider the SOIC-16 footprint for PCB layout compatibility. Verify thermal performance at maximum operating temperatures. Compare power consumption against other isolators if battery efficiency is critical.

Digital Isolators Part Context

This part belongs to the Si864x family of digital isolators. It shares architectural similarities with variants like SI8642ET-AS2 but differs in packaging and specific certification details. The family utilizes silicon dioxide isolation layers for durability. Other members include SI8640 and SI8642 variants with different voltage ratings or channel configurations.

Digital Isolators Replacement Considerations

Direct substitutes include SI8642ET-AS2 and SI8642BD-B-IS. Verify pinout compatibility and isolation voltage ratings. Check if alternative packages meet space constraints. Ensure equivalent propagation delay and power specifications for circuit continuity.