Hi!
It's the first time I write on this NG. I have a question for you :)
What is the simplest (and cheapest) method to select one between two TTL signals?
With logic gates I need two ANDs, one NOT and one OR (ok, I can use only NANDs or NORs, but I need a lot of them). I might use a dual buffer with three-state output... do you know any IC for that?
Marco / iw2nzm
You can do it with 4 NANDs, which come in a single 14 pin package. The Philips 74HC00 costs $0.11 in quantities at digi key, for example.
For a slightly higher price you can also get the smaller (8 pin) SN74LVC2G157 from Texas Instruments, which is a single integrated 2:1.
I have to thank you! That is exactly what I need.
Marco / iw2nzm
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