Simple TTL question

[Tim Klinger]

I am trying to hook up a 7400N quad NAND chip to use as a debouncer
for a switch and am running into a problem I don't understand. When I
provide power to the chip (pin 7 to ground, pin 14 to +5V) and wire
pins 1 and 2 to ground, I only measure 3V at pin 3. Shouldn't it be
5V or close to it? I'm new to this racket so any pointers would be
greatly appreciated.

Thanks,
Tim Klinger

 

[XandMS]

This is decided by TTL characteristic, if you want to get 5v output, you
must use CD4011 to replace 7400

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"Tim Klinger" <organmorgan123@yahoo.com> ????
news:e5239d50.0402050959.2bc56bd0@posting.google.com...

I am trying to hook up a 7400N quad NAND chip to use as a debouncer
for a switch and am running into a problem I don't understand. When I
provide power to the chip (pin 7 to ground, pin 14 to +5V) and wire
pins 1 and 2 to ground, I only measure 3V at pin 3. Shouldn't it be
5V or close to it? I'm new to this racket so any pointers would be
greatly appreciated.

Thanks,
Tim Klinger