Re: 74LS90, 74LS92 and other TTL are OBSOLETE???



On 13 Mar 2006 11:08:29 -0800 in sci.electronics.components, "pdmtr"
<pdmtr@xxxxxxxxx> wrote,
The question is, WHY to replace a simple <10cents Ic with a >1$ (+ cost
to make the code) one to do the job??? if you just need to do only the
ting the TTL logic does?

But you don't need just one TTL IC. What are you building?
What are you building that doesn't need a few dozen TTL ICs = or one
micro to do the same job?

Of course there are plenty of 74LS still on shelves at
www.jameco.com etc., but can you guess what your boss would say if
you designed a few of them in to a product that was going to be made
in 100k quantities? How big do you want your cell phone to be?

.