SparkFun Level Translator Breakout - PCA9306
966 units available with a short lead time.
The SparkFun PCA9306 Level Translator Breakout provides dual bidirectional voltage-level translation for I2C and SMBus lines. It lets you safely connect devices operating at different logic levels — for example, a 3.3V sensor to a 5V microcontroller — without a direction pin. Simply apply your reference voltages and enable the translator.
The PCA9306 supports a low-side voltage range of 1.2–3.3V and a high-side range of 1.8–5.5V. The breakout includes a broken-out enable pin and a second ground pin for convenient wiring.
Key Features
- Dual Bidirectional Translation – Two channels for SDA and SCL (or any two signals)
- No Direction Pin – Automatic bidirectional level shifting
- Low Side – 1.2V to 3.3V (VREF1)
- High Side – 1.8V to 5.5V (VREF2)
- I2C & SMBus Compatible – Open-drain bidirectional translation
- Enable Pin – Broken out for software control
Ideal For
- Connecting 3.3V I2C sensors to 5V Arduino boards
- Mixed-voltage I2C bus systems
- Interfacing between different logic-level devices
- Any project requiring bidirectional voltage translation
Package Contents
- 1× SparkFun PCA9306 Level Translator Breakout
Resources
The SparkFun Level Translator Breakout - PCA9306 appears in the following collections:
