Hi, I'm new to circuits and am having trouble getting this AND (also a c04n hex inverter) working. I put 4.8v dc (3AAs), + to pin14 vcc, and - to pin7 GND. I have a led/resistor hooked up to an output pin, and without any inputs, the and gate is outputting ~2v. As I touch the protoboard I have it hooked up to, the LED fluctuates. Whats going on here? Has static messed up the IC? I've heard things about using bypass caps (?). If I put +4.8 to the input pins, the led shuts off. If I run my fingers along ic pins, things go crazy. I have a similar setup with the hex inverter, things are just as bizarre.
Is there a better 7408 package I should use? Do I have to add some other components to get this working? Any help would be appreciated. I'm just looking for a simple way to get AND and NOT logic with 5v to drive LEDs.
Thanks!
Is there a better 7408 package I should use? Do I have to add some other components to get this working? Any help would be appreciated. I'm just looking for a simple way to get AND and NOT logic with 5v to drive LEDs.
Thanks!