Hein (fub) wrote,
Hein
fub

  • Mood:

Pin layouts...

Whoever designed the CMOS 4017 chip must have had a secret hatred for everyone who would be forced to make use of his brainchild.
For those who are playing along at home: the 4017 is a widely used chip that switches one of ten outputs high when a pulse is received on the 'clock'-pin. It's frequently used as a counter to make LEDs light up in sequence, in timers and that sort of thing.

The 4017 is housed in a 16-pin chip (which means 8 pins on each side). Wouldn't it be convenient if the sequential outputs were located on sequential pins?
But of course, that is not the case. Output 0 is on pin 3, output 1 is on pin 2, output 2 is on pin 4, output 3 is on pin 7 -- while output 5 is on pin 1 and output 7 is on pin 6.
Why!? Why is everyone forced to make multi-layer PCB layouts just to accomodate the weird design of this chip? Why didn't anyone come up with a design that does put the leads sequentially? Who thought up this unholy contraption? Why are we forced to put up with it?

Needless to say, I would gladly kick the responsible persons in the nuts, on behalf of every electronics hobbyist on the planet.
Tags: electronics, rant
Subscribe

  • Mock Chicken

    The Judge Dredd comics are an interesting artefact of the 1980s: it’s what British comic writers thought how the US urban landscape would…

  • Friday Five: Food

    Food is an important subject of this blog, so I couldn’t pass up a food-themed Friday Five. 1) What is your favourite food? Okonomiyaki, no…

  • Baking

    I have been making chocolates with flexible silicone molds, because those are easy to get the chocolate out of once it’s been set. I did try…

  • Post a new comment

    Error

    Anonymous comments are disabled in this journal

    default userpic

    Your reply will be screened

    Your IP address will be recorded 

  • 3 comments