CD4021BE datasheet by Texas Instruments

CD4021BE Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that the CD4021BE can handle?
  The CD4021BE can handle clock frequencies up to 10 MHz.
• How do I ensure that the CD4021BE is properly reset after power-up?
  To ensure proper reset, connect the MR (Master Reset) pin to VCC through a 1kΩ resistor and a 0.1μF capacitor to ground. This will ensure that the device is properly reset after power-up.
• What is the recommended operating voltage range for the CD4021BE?
  The recommended operating voltage range for the CD4021BE is 3V to 15V.
• Can I use the CD4021BE in a 5V system?
  Yes, the CD4021BE can be used in a 5V system. However, ensure that the input signals are within the recommended voltage range of 0V to VCC.
• How do I interface the CD4021BE with a microcontroller?
  The CD4021BE can be interfaced with a microcontroller by connecting the clock input (CP) to a clock signal from the microcontroller, and the data inputs (D0-D7) to the corresponding data lines of the microcontroller.