device is a dual bidirectional I2C and SMBus voltage-level translator with an enable (EN) input
and is operational from 1.2-V to 3.3-V VREF1 and 1.8-V to 5.5-V VREF2.
The PCA9306 device allows bidirectional voltage translations between 1.2 V and 5 V, without the use of a direction pin.
The low ON-state resistance (RON) of the switch allows connections to be made with minimal propagation delay.
When EN is high, the translator switch is ON, and the SCL1 and SDA1 I/O are connected to the SCL2 and SDA2 I/O,
respectively, allowing bidirectional data flow between ports. When EN is low, the translator switch is off,
and a high-impedance state exists between ports.
In addition to voltage translation, the PCA9306 device can be used to isolate a 400-kHz bus from a 100-kHz busy controlling the EN pin,
and disconnecting the slower bus during fast-mode communication.
۱ x CJMCU-9306 PCA9306 2-Bit Bidirectional I2C Bus And SMBus Voltage Level Translator