CD4028BF datasheet by Texas Instruments

CD4028BF Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that the CD4028BF can handle?
  The CD4028BF can handle clock frequencies up to 10 MHz, but it's recommended to operate it at a maximum frequency of 5 MHz for reliable operation.
• How do I ensure that the CD4028BF is properly reset during power-up?
  To ensure proper reset, connect the RST pin to VCC through a 1 kΩ resistor and a 10 nF capacitor to ground. This will provide a reliable power-on reset.
• What is the recommended operating voltage range for the CD4028BF?
  The recommended operating voltage range for the CD4028BF is 4.5 V to 15.5 V, with a typical operating voltage of 5 V.
• How do I interface the CD4028BF with a microcontroller?
  The CD4028BF can be interfaced with a microcontroller using a serial interface, such as SPI or I2C. The microcontroller can provide the clock signal and data to the CD4028BF, and read the output data from the CD4028BF.
• What is the maximum output current that the CD4028BF can sink or source?
  The CD4028BF can sink or source up to 1.5 mA of current per output pin, but it's recommended to limit the output current to 1 mA for reliable operation.