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| 4017 outputs pinout: why? |
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| fmzambon:
Hello everyone, well, it's half a rant, half a curiosity: why the heck is the pinout of the 4017 decade counter arranged as it is? I'm talking about the ten decoded outputs, I have no issue with the inputs. I mean, I would have expected the outputs to be arranged in order, say Q0 on pin 1,Q1 on pin 2, Q2 on pin 3... Q6 on pin 7, then Q7 on either pin 9 or 11, Q8 on pin 10 and Q9 on the last remaining pin. Instead they are arranged in that order that I cannot make sense of. What's the reason for this arrangement? Is it only due to the internal chip layout or is there a reason why they are arranged like this? |
| golden_labels:
Hackaday explains. tl;dr: because of how things are placed on the die. |
| fmzambon:
--- Quote from: golden_labels on June 26, 2020, 06:03:40 pm ---Hackaday explains. tl;dr: because of how things are placed on the die. --- End quote --- On the upside I had guessed right. On the downside I should have searched more before opening a new thread :palm: |
| Brumby:
No need to apologise. Someone else will have the same question - and their looking for an answer could bring them here! |
| golden_labels:
--- Quote from: fmzambon on June 26, 2020, 06:31:11 pm ---On the downside I should have searched more before opening a new thread :palm: --- End quote --- If you searched at all, there is no need to apologize! Sometimes it’s just a matter of sending the right query and no one can be blamed for missing it among many possibilities. I knew the page not because of my superior googling skills, but due to sheer luck. Just a few days earlier I came across it while participating in a discussion tangential to IC dies photos. |
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