Need more logic ICs, what ones ?

[Wimberleytech]

I do not subscribe to the JIT approach for jellybean parts.  The amount of money you spend on shipping your JIT buy, can purchase a lot of stock on hand.

That is how I do it...not advising anybody else to do the same.

------update-----------
I can buy 5 cd4007 pdip on ebay, usa seller, free shipping for $2.99
I can buy 5 cd4007 pdip from mouser for $2.10 + shipping.  I am sure shipping is at least $8
A single data point.

Yes, but what is jellybean? You want to avoid buying too many black ones if you don't like black ones. And someone into multi GHz RF may want a bag of black ones.
As to a single data point, I am arguing that even with shipping over the long term you will be better off financially buying what you need when you need it and maybe a few spares.

You'll be working with exactly what you need, you won't have to store and catalogue the excess and if you are mobile, moving will be easier.

In the olden days when a magazine Ad in small print could list virtually everything available this was still a fanciful idea. Yes get a selection of LED's, a hundred IN4148 and a dozen IN4004, resistors and some capacitors maybe a few transistors.

But, you cannot buy everything. As long as that is true you will have to buy something and then you pay shipping. If a healthy stockpile means you reduce what you need to buy you put yourself further from the height of the free shipping bar. If you buy a few spares to reach that height then it is a tradeoff.

I've said it before and I'm going to say it again. If you can't carry your parts stock to the rubbish bin in one trip you have too much.


If you are going to use your parts stock to construct a defensive perimeter in the zombie apocalypse then you might need to be nimble and mobile. This parts stockpile discussion is not a trifle. It could be a life or death issue.

The only value a stock of IC's will have at such times would be if they were PDIP and you could lay them out upturned on the floor surrounding your bed. If they were SMD then you better be a light sleeper.

OK, maybe I am a hoarder.  That is what my wife would say.

[amspire]

I have a few tubes of old 18CV8 programmable ICs. If I need to breadboard some logic, I just program the chip. Most of the programs are just a few lines of code and one 18CV8 often replaces 3 or more logic chips. It can replace a big chunk of logic chips varieties and the speed is 10ns. Never have to add extra inverters to a design to get the right clock edge. Not low power (50mA), but for breadboarding, it doesn't matter.

I did once have a collection of a few hundred logic chips, but I ended up getting rid of them. Many were the original 74xx series I had carefully preserved from the 70's.