There are some instances where I want to keep an input of a digital logic chip permanently high. Should I include a resistor between the supply and the pin? Also does it make any difference if it is an LS chip or a CMOS HC chip?
I've seen some with and without resistors. Which is the correct design?
I personally would think CMOS chips do not require a resistor (since the gate is insulated), while the LS series require one.
Fairchild AN-363 (Designing with TTL) has this to say (see attachment). I personally don't see much merit in either of their arguments for using resistors. Mike2545's reason is sound.