CD54HC191F3A datasheet by Texas Instruments

CD54HC191F3A Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for the CD54HC191F3A?
  The recommended operating voltage range for the CD54HC191F3A is 2V to 6V, with a typical voltage of 5V.
• How do I ensure proper synchronization of the counter outputs?
  To ensure proper synchronization of the counter outputs, it is recommended to use a common clock signal for all counters and to use the SYNC input to synchronize the counters.
• What is the maximum clock frequency that the CD54HC191F3A can handle?
  The maximum clock frequency that the CD54HC191F3A can handle is 25 MHz, but this can vary depending on the operating voltage and temperature.
• Can I use the CD54HC191F3A as a binary counter?
  Yes, the CD54HC191F3A can be used as a binary counter by connecting the Q0 output to the CI (clock inhibit) input and using the Q3 output as the most significant bit.
• How do I reset the counter to zero?
  The counter can be reset to zero by applying a low signal to the MR (master reset) input.