Comparison page

IRLZ44N vs PCF8574

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.

IRLZ44N

Projects needing MOSFET and Logic-level with a commonly available power part.

PCF8574

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

Specification Matrix

DimensionIRLZ44N PCF8574

CategoryPowerPower

MakerInfineonNXP

CoreNot specifiedNot specified

ClockNot specifiedNot specified

WirelessNot specifiedNot specified

Voltage3.3V3.3V

LibrariesArduinoArduino, MicroPython

Price$0.50 - $2.00$0.20 - $1.00

Known Tradeoffs

IRLZ44N

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

PCF8574

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

Open Individual Model Pages

IRLZ44N

Infineon

Logic-level N-channel MOSFET used in LED strip, motor, and load switching projects.

China-madePower78% confidence

PCF8574

NXP

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

China-madePower84% confidence