The recommended operating voltage range for the HEF40174BP,652 is 4.5V to 15.5V, with a typical operating voltage of 5V.
Unused inputs of the flip-flops should be connected to VCC or GND to prevent them from floating and causing unwanted behavior.
The maximum clock frequency that the HEF40174BP,652 can handle is typically around 10MHz, but this can vary depending on the specific application and operating conditions.
Yes, the HEF40174BP,652 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 proper power-on and power-off behavior, the power supply voltage should be ramped up and down slowly, and the device should be powered on and off in a controlled manner to prevent unwanted behavior.