I found this chart in the CMOS Cookbook. I tried the divide by 6 and the divide by 10
configurations but neither worked. I have attached the page from the book as well as
a schematic for the two configurations that I tried. The input is a 5 volt 6KHz square
wave. Please tell me where I have gone wrong.

Thanks

 

What is the power to the chip?

 

What is the power to the chip?

5 volts

 

5 volts

Okay. Game of 20 questions.

Is that going to pin 16?
Do you also have pin 8 going to ground?

 

 

I was misinformed by someone that said the "Jam" input were to be grounded.

The Jam inputs are indeed grounded.

 

Wrong. The Preset Enable (Pin 10) needs to be grounded but not the Jam pins.
As soon as I removed the ground from those pins, the counter worked flawlessly.

That's strange. I've just breadboarded one with pins 2,3,7,8,9,10,12 & 15 grounded, and it works fine! As long as 10 & 15 are grounded it doesn't matter which way the jam pins are tied!

 

That's strange. I've just breadboarded one with pins 2,3,7,8,9,10,12 & 15 grounded, and it works fine! As long as 10 & 15 are grounded it doesn't matter which way the jam pins are tied!

You are right! The first two CD4018s that I tried are obviously defective as all
my others work with pins grounded. Never had defective ICs from a well
known supplier, just from a surplus type store, occasionally. I should have tried
more before sounding the alarm! My apologies.I guess my major birthday on
Monday is affecting me adversely, ie. I am an Old Phart.

 

We've all been there...