Comparison page

PCF8574 vs SK6812

Side-by-side selection notes for specs, ecosystem readiness, known issues, and data confidence. This page is generated from structured component fields instead of a hand-written article.

PCF8574

Projects needing IO expansion and I2C with a commonly available power part.

SK6812

Projects needing Addressable LED and RGBW with a commonly available power part.

Specification Matrix

DimensionPCF8574 SK6812

CategoryPowerPower

MakerNXPOpsco

CoreNot specifiedNot specified

ClockNot specifiedNot specified

WirelessNot specifiedNot specified

Voltage3.3V3.3V

LibrariesArduino, MicroPythonArduino, MicroPython

Price$0.20 - $1.00$0.04 - $0.25 per LED

Known Tradeoffs

PCF8574

Breakout boards may use different pin labels or regulator choices
Clone modules can differ from the original datasheet part

SK6812

Breakout boards may use different pin labels or regulator choices
Clone modules can differ from the original datasheet part

Open Individual Model Pages

PCF8574

NXP

I2C GPIO expander often used in LCD backpacks and small IO expansion modules.

China-madePower84% confidence

SK6812

Opsco

Addressable LED family including RGBW variants used as a WS2812B alternative.

China-madePower72% confidence