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Bidirectional Voltage Level Translator Breakout PCA9306 I2C
The 7Semi Bidirectional Voltage Level Translator Breakout PCA9306 is a compact and reliable logic level conversion module designed to enable seamless communication between devices operating at different voltage levels. Based on the Texas Instruments PCA9306 dual-channel bidirectional voltage-level translator, this breakout board allows safe interfacing between 1.2V, 1.8V, 2.5V, 3.3V, and 5V logic systems without requiring complex circuitry or direction control signals.
The PCA9306 utilizes a low ON-resistance pass transistor architecture that automatically handles bidirectional data transfer, making it ideal for I²C, SMBus, PMBus, MDIO, and other open-drain communication interfaces. Its transparent operation ensures reliable signal integrity while reducing design complexity in mixed-voltage systems.
This module is widely used in Arduino, ESP32, ESP8266, STM32, Raspberry Pi, industrial controllers, sensor networks, robotics, IoT devices, battery-powered electronics, and embedded systems where different logic voltage domains must communicate safely and efficiently. Its compact footprint and low-power operation make it an excellent choice for both prototyping and production applications.
Features
- Based on Texas Instruments PCA9306 voltage level translator IC
- Dual-channel bidirectional voltage translation
- Supports logic level conversion between 1.2V, 1.8V, 2.5V, 3.3V, and 5V systems
- Automatic bidirectional signal translation
- No direction control pin required
- Optimized for I²C communication buses
- Compatible with SMBus, PMBus, and MDIO interfaces
- Low ON-resistance MOSFET architecture
- Maintains signal integrity across voltage domains
- Supports mixed-voltage embedded systems
- Low power consumption design
- Compact PCB footprint for space-constrained applications
- Easy integration with development boards and sensors
- Suitable for industrial and commercial applications
- Reliable operation across a wide voltage range
Specifications
- Product category: Voltage translation module
- Operating Temperature:-40C to 80C
- Translation channel: Dual channel
- Communication Type: Bidirectional
- Low Side Voltage (VREF1): 1.2V to 3.3V
- High Side Voltage (VREF2): 1.8V to 5V
- Dimension in mm: L=20mm W=14mm H=2.72mm
Package Includes
- 1x Bidirectional Voltage Level Translator Breakout PCA9306 I2C
