kudjung
Member level 4

74ac spice
Hello All
I'm a newbie to spice. this probably be a simple question. But I don't know why I was getting this. I try to to simulate the simple mixed signal in spice. I put a 100K ohm resistor at the output of a not gate(74F04), I got 3.5 volt(why not 5) as logic high. Why? What I did wrong? I try changing the not gate supply but it also didn't work. I 've attached the picture of the schematic that I use for simulation.
TIA.
Hello All
I'm a newbie to spice. this probably be a simple question. But I don't know why I was getting this. I try to to simulate the simple mixed signal in spice. I put a 100K ohm resistor at the output of a not gate(74F04), I got 3.5 volt(why not 5) as logic high. Why? What I did wrong? I try changing the not gate supply but it also didn't work. I 've attached the picture of the schematic that I use for simulation.
TIA.