/diy/ - Do It Yourself

>>1897804
>Could you elaborate on what this means?

if you look at the datasheet, you can see the diff between the 4009UB which is unbuffered, and the 4010B which is buffered. looking at the output transistor, on the far right, you see that you have access to all 3 of the FETs pins: gate, source, and drain. as such, you can use that FET in any way you like, including as an analog amplifier, or analog switch.

the 4010 is much more traditional, in that you have to get through some totem-pole stages before you get to the output. these stages are strictly logical, and dont do analog.