The recommended operating voltage range for the 74HC7046AD is 2V to 6V, with a typical voltage of 5V.
Unused inputs of the 74HC7046AD should be connected to VCC or GND to prevent them from floating and causing unwanted oscillations.
The maximum clock frequency that the 74HC7046AD can handle is 25 MHz, but this can vary depending on the operating voltage and load conditions.
Yes, the 74HC7046AD can be used in a 3.3V system, but the output voltage levels may not be as high as those in a 5V system, and the device may not be as fast.
To ensure that the 74HC7046AD is properly powered, a decoupling capacitor of 0.1uF to 1uF should be placed close to the VCC pin, and the power supply should be able to provide sufficient current to drive the device.