The maximum frequency of operation for the PCA9544ADGVR is 400 kHz, as specified in the datasheet. However, it's recommended to operate at a lower frequency to ensure reliable operation and to avoid any potential issues with signal integrity.
No, the PCA9544ADGVR is not designed to be used as a level shifter. It's a bidirectional I2C bus multiplexer, and it does not provide level shifting capabilities. If you need to shift voltage levels, you'll need to use a separate level shifter IC.
The PCA9544ADGVR does not have built-in hot-swapping capabilities. To handle hot-swapping, you'll need to implement external circuitry to detect the insertion or removal of devices and control the multiplexer accordingly. You may need to use additional ICs, such as a hot-swap controller, to ensure safe and reliable operation.
The PCA9544ADGVR is designed for I2C bus multiplexing, and it's not compatible with I3C devices. I3C is a newer bus standard that's not supported by this device. If you need to multiplex I3C devices, you'll need to use a different IC that's specifically designed for I3C.
The maximum capacitance of the bus that the PCA9544ADGVR can drive is not explicitly specified in the datasheet. However, as a general rule, the total capacitance of the bus should be kept as low as possible to ensure reliable operation. A good rule of thumb is to keep the total capacitance below 400 pF.
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