CD54HC4020F3A datasheet by Texas Instruments

CD54HC4020F3A Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for the CD54HC4020F3A?
  The recommended operating voltage range for the CD54HC4020F3A is 2V to 6V, with a typical voltage of 5V.
• How do I handle the output enable (OE) pin in my design?
  The output enable (OE) pin is active-low, meaning that the outputs are enabled when OE is low and disabled when OE is high. You should connect OE to a logic low signal to enable the outputs, and to a logic high signal to disable the outputs.
• What is the maximum clock frequency that the CD54HC4020F3A can handle?
  The maximum clock frequency that the CD54HC4020F3A can handle is 25 MHz, but this can vary depending on the operating voltage and temperature. It's recommended to check the datasheet for specific timing characteristics.
• How do I ensure that the CD54HC4020F3A is properly powered and decoupled?
  To ensure proper operation, it's recommended to use a decoupling capacitor of 0.1 μF to 1 μF between the VCC pin and GND, and to power the device from a clean, regulated voltage source.
• Can I use the CD54HC4020F3A in a 3.3V system?
  Yes, the CD54HC4020F3A can be used in a 3.3V system, but you should ensure that the input signals are compatible with the device's input voltage levels, and that the output signals are compatible with the receiving device's input voltage levels.