CD4019BF datasheet by Texas Instruments

CD4019BF Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that the CD4019BF can handle?
  The CD4019BF can handle clock frequencies up to 10 MHz, but it's recommended to keep it below 5 MHz for reliable operation.
• Can I use the CD4019BF as a simple counter without the clock input?
  Yes, you can use the CD4019BF as a simple counter without the clock input by connecting the clock input to the Q output of the previous stage. This is known as a 'ripple counter' configuration.
• How do I reset the CD4019BF counter?
  You can reset the CD4019BF counter by applying a low signal to the MR (Master Reset) input. The counter will reset to zero when the MR input is low.
• Can I use the CD4019BF as a divide-by-N counter?
  Yes, you can use the CD4019BF as a divide-by-N counter by connecting the Q output of the desired stage to the clock input. For example, to divide the clock frequency by 4, connect the Q3 output to the clock input.
• What is the power consumption of the CD4019BF?
  The power consumption of the CD4019BF depends on the operating frequency and voltage. Typically, it consumes around 10-20 mA at 5V and 1 MHz clock frequency.