[sdiy] CD4067 MUX, supplier differences?

[Ove Ridé]

On 17 October 2012 05:28, Tom Arnold <xyzzy at sysabend.org> wrote:
> On Wed, Oct 17, 2012 at 03:58:31AM +0200, Ove Ridé wrote:
>> A first sanity check: Are you sure it's a CD4067 you're using and not
>> a 74HC4067? Despite what anyone might have told you, they're not
>> equivalent. While the pinout is identical, the 74HC variant has a
>> lower limit for the Vcc than a proper CD4067.
>
> Unless TI is labeling their parts wrong I've tried CD4067s from two batches.
>
> I'm really stumped on this one.  Puppy staring at gramophone level of
> stumped...

Do you have/can you make a schematic for the circuit you're building?
How is the circuit built? Etched PCB or prototype board of some kind?

-- 
/Ove

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