The maximum clock frequency of the 74HC4040D is 25 MHz, but it can be affected by factors such as supply voltage, temperature, and capacitive load.
To ensure proper power supply, connect the VCC pin to a stable 2.0-6.0 V power supply, and decouple the power supply lines with a 100 nF capacitor.
The maximum output current that the 74HC4040D can sink or source is 25 mA per output pin, but it's recommended to limit the current to 10 mA to ensure reliable operation.
The 74HC4040D counter can be reset by applying a low signal to the MR (Master Reset) input pin.
The propagation delay of the 74HC4040D is typically 10 ns, but it can vary depending on the operating conditions and load capacitance.