Forums » CircuitLab Feature Requests

Not sure if this ability already exists but I'm simulating a circuit that has an analog voltage feeding a logic gate, it would be helpful if the input threshold voltage was settable based on what type of logic family I am using. Based on my results it looks like 3V is where the gate transitions from low to high. This is incorrect for most logic families and if it can't be set at least pick a more reasonable voltage (2.5V for 5V logic). Also allowing a setting for the output voltage as well would be helpful for mixed signal simulation. (It seems like 5V is what is defaulted) If you plan to do this you might want to consider separate L-H and H-L voltages this would allow devices like Schmitt trigger buffers to be modeled as well