ChipScout

Comparison page

BSS138 Level Shifter vs TCA9548A

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.

BSS138 Level Shifter

Projects needing Level shifting and I2C with a commonly available power part.

TCA9548A

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

Specification Matrix

DimensionBSS138 Level ShifterTCA9548A
CategoryPowerPower
MakerGenericTexas Instruments
CoreNot specifiedNot specified
ClockNot specifiedNot specified
WirelessNot specifiedNot specified
Voltage3.3V3.3V
LibrariesArduinoArduino, MicroPython
Price$0.30 - $1.50$1.00 - $4.00

Known Tradeoffs

BSS138 Level Shifter

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

TCA9548A

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

Open Individual Model Pages

BSS138 Level Shifter

Generic

MOSFET-based bidirectional level shifter module used for I2C 3.3V/5V conversion.

China-madePower72% confidence

TCA9548A

Texas Instruments

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

China-madePower88% confidence