Comparison page

TCA9548A vs ULN2003

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.

TCA9548A

Projects needing I2C mux and Address conflicts with a commonly available power part.

ULN2003

Projects needing Driver array and Stepper kit with a commonly available power part.

Specification Matrix

DimensionTCA9548A ULN2003

CategoryPowerPower

MakerTexas InstrumentsTexas Instruments

CoreNot specifiedNot specified

ClockNot specifiedNot specified

WirelessNot specifiedNot specified

Voltage3.3V3.3V

LibrariesArduino, MicroPythonArduino

Price$1.00 - $4.00$0.10 - $0.60

Known Tradeoffs

TCA9548A

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

ULN2003

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

Open Individual Model Pages

TCA9548A

Texas Instruments

8-channel I2C multiplexer used to connect sensors with duplicate I2C addresses.

China-madePower88% confidence

ULN2003

Texas Instruments

Darlington transistor array often sold with 28BYJ-48 stepper motor kits.

China-madePower82% confidence