双向I2C总线和SMBus电压级别转换器TI-PCA9306详解

The TI-PCA9306.pdf is a documentation for the PCA9306, which is a dual bidirectional I2C bus and SMBus voltage-level translator. This device is designed for use in mixed-mode I2C applications and is compatible with both I2C and SMBus protocols. One of the key features of the PCA9306 is its 2-bit bidirectional translator for SDA and SCL lines, which allows for seamless communication between devices with different voltage levels. This is especially useful in systems where components with varying voltage requirements need to communicate with each other. The PCA9306 has a maximum propagation delay of less than 1.5 ns, which ensures that it can accommodate standard-mode and fast-mode I2C devices as well as multiple controllers. This makes it suitable for use in high-speed and complex systems where rapid data transmission is crucial. Another important feature of the PCA9306 is its ability to perform voltage-level translation between different reference voltages. It can translate between 1.2V VREF1 and 1.8V, 2.5V, 3.3V, or 5V VREF2, as well as between 1.8V VREF1 and 2.5V, 3.3V, or 5V VREF2, 2.5V VREF1 and 3.3V or 5V VREF2, and 3.3V VREF1 and 5V VREF2. This makes it a versatile solution for systems with varying voltage requirements. In summary, the PCA9306 is a highly versatile and reliable dual bidirectional I2C bus and SMBus voltage-level translator that is suitable for use in a wide range of mixed-mode I2C applications. Its fast propagation delay, compatibility with different protocols, and ability to perform voltage-level translation make it an ideal choice for high-speed and complex systems that require seamless communication between components with different voltage requirements.