[sdiy] just one gate?

[Scott Gravenhorst]

sasami at hotkey.net.au (Ken Stone) wrote:
>>Ever want "just one gate",  rather than a package of 4 or 6 or whatever?
>>
>>http://www.rohm.com/products/shortform/28logic/logic_index.html might be of 
>>some interest.
>>
>>Thoug h I'm guessing that some of you guys would probably just use a standard 
>>package and figure out a use for the "extra" gates...	:-)
>
>Actually, as far as slower speed stuff is concerned, if I need just one
>gate, I usually make it from diodes, resistors and, if need be, a transistor
>for inverted logic.

Same here, I designed (and built) a CMOS ADSR that uses one 4069UB, but the
circuit actually contains one RS flipflop, a few NOR gates and some other stuff,
all made out of the 6 inverters on the one chip plus some diodes and resistors.  

There is also the reverse, where you may have an unused gate from a NOR package,
but you really need an inverter.  Just ground one NOR input and voila la inverter.


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