SI8631BB-B-IS1R

Digital Isolators Overview

The SI8631BB-B-IS1R is a Skyworks Solutions digital isolator featuring three channels with a 2500 Vrms isolation voltage. It operates within a 2.5 V to 5.5 V supply range and supports data rates up to 150 Mb/s. The device utilizes capacitive coupling technology and provides a common-mode transient immunity of 35 kV/µs. Packaged in a 16-SOIC narrow body, it offers a propagation delay of 13 ns and functions reliably across an operating temperature range of -40°C to +125°C.

Digital Isolators Feature Summary

• Provides galvanic isolation between circuits using high-reliability capacitive coupling technology.
• Ensures signal integrity in noisy environments through a common-mode transient immunity rating of 35 kV/µs.
• Supports bidirectional or unidirectional logic configurations with independent input and output supplies.

Digital Isolators Applications

• Industrial automation systems requiring robust signal isolation
• Medical equipment needing certified safety isolation barriers
• Power electronics interfaces for motor control and inverters

Digital Isolators Procurement Notes

Verify the specific suffix 'IS1R' confirms the reel packaging format required for automated assembly processes. Confirm that the SOIC-16 package width matches the target PCB footprint constraints. Ensure the component meets RoHS compliance standards applicable to the final product region. Cross-reference the datasheet revision to confirm compatibility with existing design files.

Digital Isolators Selection Notes

Select this component when high-speed data transmission up to 150 Mbps is required alongside strong noise immunity. The wide operating temperature range makes it suitable for harsh industrial environments. Consider the 16-pin SOIC package for space-constrained designs needing multiple isolated channels. Verify power supply requirements align with the 2.5 V to 5.5 V operational window.

Digital Isolators Part Context

This part belongs to the Si86xx family of digital isolators from Skyworks Solutions. The series is known for replacing traditional optocouplers with superior performance metrics. The SI8631 variant specifically addresses applications needing three isolated channels with high speed and reliability.

Digital Isolators Replacement Considerations

Publicly confirmed substitute part numbers include ADUM231E1BRWZ and ADUM3301CRWZ from Analog Devices Inc. These alternatives offer similar channel counts and isolation voltages but may differ in pinout or electrical characteristics.