SI8661EB-B-IU

Digital Isolators Overview

The SI8661EB-B-IU is a six-channel digital isolator from the Si866x series, manufactured by Skyworks Solutions. It features five forward and one reverse channel with unidirectional signal flow. The device utilizes capacitive coupling technology to provide an isolation voltage of 2500 Vrms. It supports data rates up to 150 Mb/s with a propagation delay of 8 ns. Operating on a supply voltage between 2.375 V and 5.5 V, it is housed in a QSOP-16 package. The component is qualified under AEC-Q100 standards for automotive applications and operates within a temperature range of -40°C to +125°C.

Digital Isolators Feature Summary

• Six-channel configuration with five forward and one reverse direction for flexible signal routing
• Capacitive coupling isolation technology ensuring high common-mode transient immunity
• Automotive qualification compliant with AEC-Q100 standards for reliability
• Integrated shutdown functionality to reduce power consumption during idle states

Digital Isolators Applications

• Automotive electronic control units requiring galvanic isolation
• Industrial communication interfaces such as CAN and LIN bus systems
• Power electronics gate drive circuits for motor control
• General-purpose digital isolation in mixed-signal environments

Digital Isolators Procurement Notes

Verify that the specific suffix 'B' corresponds to the intended pinout and functional configuration, as ordering codes define exact part characteristics. Confirm compliance with RoHS directives and moisture sensitivity levels prior to assembly. Ensure the QSOP-16 package dimensions align with the target PCB footprint. Cross-reference the datasheet for any updates regarding lead-free soldering profiles and reflow temperature limits to guarantee manufacturing integrity.

Digital Isolators Selection Notes

Select this component when a six-channel isolator with automotive qualification is required. The 2500 Vrms isolation rating suits standard industrial and automotive voltage levels. Consider the 150 Mb/s data rate capability for moderate-speed communication links. The unidirectional nature dictates signal flow directionality; ensure the five-forward and one-reverse layout matches the system architecture. Verify power supply requirements against the 2.375 V to 5.5 V operating range.

Digital Isolators Part Context

This device belongs to the Si866x family of low-power digital isolators. The family offers various channel counts and isolation voltages, including 2.5 kV and 5 kV options. The SI8661EB variant specifically provides a 2.5 kV isolation barrier. Other members in the series may differ in channel configuration, such as four or six channels, or offer bidirectional capabilities. The EB suffix typically denotes specific packaging and feature sets within the broader product line.

Digital Isolators Replacement Considerations

SI8661BD-B-IS2: Offers 5 kV isolation in a SOIC-Wide-16 package. SI8661BD-B-ISR: Provides 5 kV isolation in an SOIC-16 package. SI8662EB-B-IU: Features four forward and two reverse channels in a QSOP-16 package. SI8660BB-B-IU: Contains six forward channels only in a QSOP-16 package.