Oh man. I ordered the Sequential Switch from Laurie and he forgot to
include one 4051, so I ordered one from Mouser. When I typed in 4051, what
came up was the part I bought and installed. Ok so I swapped the part out
for the right one and now everything works!
Thanks again Ken
pete
include one 4051, so I ordered one from Mouser. When I typed in 4051, what
came up was the part I bought and installed. Ok so I swapped the part out
for the right one and now everything works!
Thanks again Ken
pete
On 2/10/07, sasami@... <sasami@...> wrote:
>
> Yes, it is MOST DEFINITELY the problem. The 74HC series are 5 volt chips.
> If
> you connect them to 15 volts they either immediately blow up, or if the
> current is limited as it is in this case, they draw what current they can
> to
> the detrement of whatever is going on around them. Make sure you get a
> genuine 4000 series chip.
> These are MC14051 if made by Motorola or most likely CD4051 if made by
> someone else. There will probably be B or something like that after the
> code.
> Never use a 74HC4xxx in any of my designs, unless I specifically give the
> full code number. So far the CGS46 is the only board to use one - a
> 74HC4046.
>
> Ken
>
>
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