The PCA82C251 can operate at a maximum clock frequency of 40 MHz.
To configure the PCA82C251 for I2C-bus operation, you need to set the SCL pin as an input and the SDA pin as an open-drain output. You also need to configure the device's internal clock to match the I2C-bus clock frequency.
The PCA82C251 requires a minimum voltage of 4.5V to operate. However, it is recommended to operate the device at a voltage between 5V and 6V for optimal performance.
The PCA82C251 can be reset by applying a low signal to the RST pin for at least 100 ns. This will reset the device's internal registers and return it to its default state.
The PCA82C251 can sink or source a maximum current of 20 mA per pin. However, it is recommended to limit the current to 10 mA per pin to ensure reliable operation.
