Over the years I’ve accumulated a bunch of obsolete ICs; all I can say is they weren’t obsolete at the time. Sometimes I need one, so here’s a list of the jelly-bean collection where I can find & update it as parts emerge from their hidey-holes in the Heap.
All hulking through-hole
- 138 1-to-8 demux
- 221 monstable (!)
- 139 1-to-4 decoder
- 156 2-to-4 dual demux / decoder
- F521 8-bit comparator
- 373 8-bit latch (transparent)
- 374 8-bit latch (clocked)
- 74 dual D flipflop
- 244 8-bit buffer
- 393 dual 4-bit counter (ripple)
- AS869 8-bit up/down counter
- 191 4-bit up/down counter
- 157 quad 2-to-1 mux
- 164 8-bit parallel output shift register
- 245 8-bit bus transceiver
- 151 8-in multiplexer
Memo to Self: What horror lurks in the box labeled “Old ICs”?
The Smell of Molten Projects in the Morning 
Comments
4 responses to “7400-Family IC Stash”
Well that list is sad. I think I have most of them. 138, 139, 373, 374, 74, 244, 191, 157, 164, 245 I KNOW I have. Plus many others. I’d be willing to share with you if you ever think you might need something I have.
Plenty more where they came from: this just gets a scrap of paper off my desk!
I amazed at how many ancient things I still have. A lot of what I have was from an EX-field engineer in 1978 who just handed me a bag of his extra stuff he didn’t want to throw away. Hundreds of TTL 7400 Series IC’s. If they stopped being useful, I might toss em too, but the tinkering never stops so they remain in my stash. reminds me… Why do I need a bunch of 6800/6809 cpu’s? I can’t just toss ’em.
I can’t just toss ‘em.
I know that feeling…
I’ve promised that our next move won’t involve most of the stuff in the Basement Laboratory. When we moved from Raleigh (back) to Poughkeepsie, one of the movers looked at the shop’s parts bins and said “This is like moving Home Depot!”
Of course, the guy hauling out the book boxes said “Why don’t you just sell these mumble books and buy a TV?”
Too much stuff!