Tagged Questions

1
vote
4answers
264 views

How to find a DIP component implementing this simple logic?

I need to implement this logic in a very simple circuit. It will be perfect if I can use a single component in a DIP package, implementing the logic. How can I find one?
2
votes
1answer
578 views

What is the fastest 7400 series family? Is 74VHC faster than 74AHC?

What is the fastest 7400 series logic family? Is 74VHC* faster than 74AHC*? This list does not seem to be in any particular order: http://en.wikipedia.org/wiki/7400_series
0
votes
2answers
257 views

Digital potentiometer size

I need to replace a 5k mechanical potentiometer with a digital one. The hang up is that it will have a maximum of 14V across it. That's too high for most digital pots on the market. The max current ...
5
votes
6answers
672 views

Sources for cheap/free electronics for students? [closed]

I've just recently discovered an incredible interest in building my own circuits and my own logic. I'm in a computer architecture class and we're learning how to make ALUs based on a set of ...
4
votes
2answers
261 views

Are there any convenient “bus keeper” or “bus hold” chips?

Many CPLDs have a handy feature which will weakly drive pins toward their present state, so that a pin which is weakly pulled high will pull high and one which is weakly pulled low will pull low. Are ...