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I was experimenting with logic gates on my breadboard and tried a 3-input logic gate.

I got the following result:

Input  |  Output
A B C  |   ?
0 0 0  |   1
0 0 1  |   0
0 1 0  |   1
0 1 1  |   0
1 0 0  |   1
1 0 1  |   0
1 1 0  |   1
1 1 1  |   1

What logic gate could this be? Thanks

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  • \$\begingroup\$ What is the part number and pinout? Photo? \$\endgroup\$ – Transistor Jul 1 '17 at 9:11
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    \$\begingroup\$ nC+A.B is the function. \$\endgroup\$ – Andy aka Jul 1 '17 at 9:13
  • \$\begingroup\$ @Transistor sorry, what do you mean part number and pinout? I've built a transistor logic gate if that helps... \$\endgroup\$ – Mihir Chaturvedi Jul 1 '17 at 9:18
  • \$\begingroup\$ @Andyaka oh! Is there a specific name given to this function \$\endgroup\$ – Mihir Chaturvedi Jul 1 '17 at 9:19
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    \$\begingroup\$ @Mi hirChaturvedi: When you said "... and tried a 3-input logic gate" I read it as you were probing one gate. I think you have created some combinational logic rather than a logic "gate". \$\endgroup\$ – Transistor Jul 1 '17 at 9:23
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Functionally it is this: -

enter image description here

And it doesn't have a specific name unless someone somewhere in some obscure place has named it.

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  • \$\begingroup\$ C looks like enable. Kind of nand with enable. \$\endgroup\$ – Gregory Kornblum Jul 1 '17 at 9:34
  • \$\begingroup\$ Thanks! It does output exactly the same values. How did you figure it out though? \$\endgroup\$ – Mihir Chaturvedi Jul 1 '17 at 11:21
  • \$\begingroup\$ The output is the inverse of C except for one instant. \$\endgroup\$ – Andy aka Jul 1 '17 at 17:24

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