• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 18 subscribers
  • Views 355 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

SN74HC4060: Output State During Startup

Will Howren
Prodigy 10 points
Part Number: SN74HC4060

What is the state of the outputs when power is first applied, or more generally, are all the flips-flops zero during startup?

Specifically, I have CLR tied to ground and am using an RC oscillator of C = 2.2 uF R1 = 53.6 kO R2 = 536 kO. Are all the flip-flops held low during startup, or are they in an indeterminate state? Should CLR tied to high?

  • 0
    TI__Guru* 96591 points

    Hi Will,

    The outputs will be in an unknown state until data has been clocked through them.  It's best to clear the device at startup if you need to be certain of the output.  Many times people only care that the output is a certain frequency, so it's not an issue.