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  1. Parts
  2. /Components
  3. /Logic level converters

SparkFun Level Translator Breakout - PCA9306

OverviewAlternates
SparkFun Level Translator Breakout - PCA9306 - SparkFun - BOB-15439

Bidirectional I2C/SMBus voltage-level translator breakout using the PCA9306, for bridging devices running at different logic voltages.

Parts tray full · 5 max · remove a part to add another
SparkFun Level Translator Breakout - PCA9306 — SparkFun — BOB-15439

Offers

  • ?DigiKey$5.25
  • SparkFun$5.25

Offers

  • ?DigiKey$5.25
  • SparkFun$5.25

Pinout

Logical pinout · physical placement not verified
SPARKFUN LEVEL TRANSLASCL1SCL2SDA1SDA2VREF1VREF2GNDGNDEN
  • SCL11

    I2C clock side 1

    Type · I2C
  • SDA12

    I2C data side 1

    Type · I2C
  • VREF13

    side 1 logic/reference voltage

    Type · Power
  • GND4

    common ground

    Type · Ground
  • EN5

    enable input

    Type · Control
  • SCL26

    I2C clock side 2

    Type · I2C
  • SDA27

    I2C data side 2

    Type · I2C
  • VREF28

    side 2 logic/reference voltage

    Type · Power
  • GND9

    common ground

    Type · Ground
PinPositionTypeFunction
SCL11I2CI2C clock side 1
SDA12I2CI2C data side 1
VREF13Powerside 1 logic/reference voltage
GND4Groundcommon ground
EN5Controlenable input
SCL26I2CI2C clock side 2
SDA27I2CI2C data side 2
VREF28Powerside 2 logic/reference voltage
GND9Groundcommon ground
Logical pinout · physical placement not verified
SPARKFUN LEVEL TRANSLASCL1SCL2SDA1SDA2VREF1VREF2GNDGNDEN

Pin details

9 connections
  1. SCL1

    I2C clock side 1

    I2C
    1
  2. SDA1

    I2C data side 1

    I2C
    2
  3. VREF1

    side 1 logic/reference voltage

    Power
    3
  4. GND

    common ground

    Ground
    4
  5. EN

    enable input

    Control
    5
  6. SCL2

    I2C clock side 2

    I2C
    6
  7. SDA2

    I2C data side 2

    I2C
    7
  8. VREF2

    side 2 logic/reference voltage

    Power
    8
  9. GND

    common ground

    Ground
    9

Level shifters

20 other options

BSS138/PCA9306 I2C shifters, TXB0104/TXS0108E auto-direction translators, 74LVC245/74AHCT125 buffers, and 12V-to-3.3V converters — matched to bus type and direction, not channel count.

View all 20
  • 2-Channel Level Converter (12V to 3.3V) visual preview

    2-Channel Level Converter (12V to 3.3V)

    $6.90
  • 2-Channel Level Converter (12V to 5V) visual preview

    2-Channel Level Converter (12V to 5V)

    $6.90
  • 4-channel I2C-safe Bi-directional Logic Level Converter visual preview

    4-channel I2C-safe Bi-directional Logic Level Converter

    $3.95
  • 4-Channel Level Converter (12V to 3.3V) visual preview

    4-Channel Level Converter (12V to 3.3V)

    $8.90
  • 4-Channel Level Converter (12V to 5V) visual preview

    4-Channel Level Converter (12V to 5V)

    $8.90
  • 74AHCT125 - Quad Level-Shifter (3V to 5V) visual preview

    74AHCT125 - Quad Level-Shifter (3V to 5V)

    $1.50
  • 74AHCT14 - Logic Level Inverter / Level Shifter visual preview

    74AHCT14 - Logic Level Inverter / Level Shifter

    $0.95
  • 74LVC245 - Breadboard Friendly 8-bit Logic Level Shifter visual preview

    74LVC245 - Breadboard Friendly 8-bit Logic Level Shifter

    $1.50
  • 8-channel Bi-directional Logic Level Converter visual preview

    8-channel Bi-directional Logic Level Converter

    $7.95
  • Adafruit QT 3V to 5V Level Booster Breakout - STEMMA QT / Qwiic visual preview

    Adafruit QT 3V to 5V Level Booster Breakout - STEMMA QT / Qwiic

    $2.95
  • Adafruit QT 5V to 3V Level Shifter Breakout - STEMMA QT / Qwiic visual preview

    Adafruit QT 5V to 3V Level Shifter Breakout - STEMMA QT / Qwiic

    $2.95
  • Fermion: TXS0104E 4-Bit Level Translator (Breakout) visual preview

    Fermion: TXS0104E 4-Bit Level Translator (Breakout)

    $3.50

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