mozikluv
New Member
i have several questions to be answered by you guys who are well versed on logic chips;
1. is the pin assignment of the 74LS190N the same with the 74LS193N :?
2. Can the 74HC4066N be used to repalce the CD4066 w/o necessarily changing the accompanying components? :?:
3. What does n-stage counter mean. Does the "n" stand for any number of stages used like in a ripple clock, ripple carry/borrow or parallel gated carry/borrow configuration?
4. Why is it that some reading materials say that "unused pins should be tied to ground or to supply. So far I have not yet read an article that says "unused pins should be left open. Now how come I have been seeing several circuits with unused pins left open and others tied to ground. Are both approach correct in its own right? Does it mean that tying the unused pin to ground or leaving it open depends entirely on the application or function of the device? :? :? :?
Your replies would be highly appreciated