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Question about 74LS07


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Hi all!

I am confused a little bit with something related with the IC 74LS07.

This IC has buffers, isn`t that correct? So let`s choose the first gate and apply +5V at the input (1A). I expect to get +5V at the output of the gate (1Y), right? So why is that not working with my chips? ??? (I have already checked two of them).

I cannot understand what is my mistake... :(

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