How to control a demultiplexer

Hi all,

I checked with the chips and I'm afraid the reason is I destroyed the chips, therefore the Z pin was always switching to the 0000 channel...But the thing is how could this happen.

overgift said:

Hi all,

I checked with the chips and I'm afraid the reason is I destroyed the chips, therefore the Z pin was always switching to the 0000 channel...But the thing is how could this happen.

Click to expand...

Thats bad news,

What voltage levels were you switching thru the 4067.?

Whats your location.?

EDIT:
I see that you are using the 4067 as an expander ie: 1 to 16.

If the outputs of the 4067 are 'floating' and you touch them, you could have blown the analog gate open at that time..