The recommended operating voltage range for the HEF4060BT is 3V to 15V, although it can operate down to 2V with reduced performance.
To ensure reliable startup of the oscillator circuit, make sure to use a high-quality quartz crystal with a suitable load capacitance, and ensure that the oscillator pins (pins 1 and 2) are properly decoupled from the power supply.
Yes, you can use the HEF4060BT as a clock divider only by not using the counter output (pins 3-6) and only using the clock output (pin 9).
During power-up, the reset pin (pin 12) should be pulled high to ensure that the device resets properly. A 1kΩ to 10kΩ pull-up resistor is recommended.
The maximum clock frequency that the HEF4060BT can handle is approximately 10MHz, although this may vary depending on the specific application and operating conditions.