[sdiy] CMOS schmitt trigger question

[media at mail1.nai.net]

At 6:29 PM -0500 12/27/01, harry wrote:
>
>In the case of the unbuffered gates (CMOS -A series) you can get different
>results by either paralleling gate inputs (more input load... but better
>>output drive - meaning it will drive closer to the rails, just as
>>increasing transistor base drive improves collector current).  This is
>not >the case in the -B series parts...

OK :)

>Usually you can tie inputs to whatever is convenient. I usually tie
>them to some rail... or to another nearby (non-critical) signal. I always
>>avoid "burying" the gates in such a way (like power supply run through an
>>input pin...

I've heard you can run various CMOS chips without connecting power to Vdd!!
(not that it's a good idea)

>or traces under a socket on the component side of the board...) that they
>>cannot be easily liberated if I need the gate later...

THANX!!

>> >>to agree to "sucked and blown" as a definitve terminology.  ;^)
>>
>> Oh my!!  What industry is that?? ;)
>
>Well... obviously its not the ENTERTAINMENT industry...

Or at least not the adult entertainment industry, where they both mean the
same thing :)