Oleg, me and many others have written many useful posts about this issue, with lots of pictures, schematics and links. And even when new newbies came we have again written new posts, instead of only giving them the old links. But from time to time we have no time or are not willing to again formulate a new set of posts. Then, it's necessary for you to search for the posts written earlier.

Ashwin, your question about whether the 74HC244 can be used instead of 74VHC244 must be answered by YES and NO. The topic is too difficult to give a simple answer. Many factors come into play, which you can only understand, if you read the many posts written about it. So, please type 74VHC244 into the search box of this site and read at least the posts from me.

Ashwin, you expect help from us, but you are not willing to spend a few minutes of reading. Take note, we, who we examined this issue, who we searched for solutions and published schematics, pictures and links, spent hourse and days for it! So, it's not at all offending from us, when we ask you to search and read here.


Kai