CD4521BE datasheet by Texas Instruments

CD4521BE Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for the CD4521BE?
  The recommended operating voltage range for the CD4521BE is 4.5V to 15.5V, although the device can operate with a minimum voltage of 3V.
• How do I ensure the CD4521BE is properly powered on and off?
  To ensure proper power-on and power-off, it's recommended to use a capacitor (e.g., 0.1uF) between VCC and GND, and to sequence the power supply voltage (VCC) and the clock signal (CLK) to prevent unwanted oscillations.
• What is the maximum clock frequency the CD4521BE can handle?
  The CD4521BE can handle clock frequencies up to 10 MHz, but the maximum frequency may vary depending on the specific application and operating conditions.
• How do I handle the asynchronous reset (R) input?
  The asynchronous reset (R) input should be tied to VCC through a resistor (e.g., 1kΩ) and a capacitor (e.g., 0.01uF) to ensure proper reset functionality.
• What is the purpose of the enable (E) input?
  The enable (E) input is used to enable or disable the counter. When E is high, the counter is enabled, and when E is low, the counter is disabled and the outputs are in a high-impedance state.