found very large stash of IC.

[poppyman]

Hello,

I found a very large stash of IC for sell but since I didn't recognized any of the classic/famous IC used in pedals, I just bought a little sample of them just to give a go with google.
Unfortunately, after a couple of hours of "googling" and datasheet and equivalence reading, I didn't come up with much. Most of them have a Texas Instrument logo on it...I'm not sure but they could be pretty old.

Does any of these IC rings a bell to any one? (there's potentially dozen of each of the ones listed!)

uA 709 CP: I found it could be a former version of the ua741 op amp: D+ or Hotcakes?

SN 74LS293N: I found a close one listed in the Banzai music part shop listed as SN74LS93N Logic. 4bit Binary. PDIP.

SN 7457 N (14 pin)

DS8830 (14 PIN)

CD 4063 BE (RCA) (16 pin)

there's a lot of other ones but their marking are nowhere near any "audio friendly" IC I've seen listed at small bear or anywhere else.

If you have any clue let me know.

Thanks in advance.

[duck_arse]

74LS157 (7457), TTL, Quad 2-Input Data Selector/ Multiplexer
DS8830 Dual Differential Line Driver
cd4063 4 bit magnitude comparator

looks like you got yourself a load of hardcore digital stuff, from the old days. not a lot of use for that stuff in a fuzz, but stranger things have gained reputations in fuzz.

[amptramp]

The µA709 is an op amp but with external compensation that permits better frequency response than a µA741 once you are above a gain of one.  They were used in the 1970's and came out prior to the µA741.  No doubt someone will invent some sort of special mojo for them like they have with the µA741, but I have designed with both, so I am immune to mojo.

[greaser_au]

The 709 is a very old op-amp - earlier than the the 741, and a similar spec (I once had an old Tandy/Radio Shack/Science Fair 'breadboard' kit that used a 709) - those kits were so cool.
The 74LS293 is a divide-by-16 or divide-by-10 binary ripple counter - like all of the 74 series, it is very digital...
7457 is a digital 8-pin device used as a divide-by-60 function (typically used for clocks referenced to the mains supply frequency in the US).
DS8830 is a 'digital' dual differential line driver - typically you might use these for the data transmission lines of (e.g.) X.21 or V.35 interfaces.
the CD4063 is a digital magnitude comarator- it takes 2 4-bit numbers (nybbles) as input and provides an output of A<B, A=B, or A>B (these are cascadable for bigger data slices)

david

[poppyman]

Thanks a lot for your very detailed answers.

It seems that most of the chips I found are a bit overkill for my regular projects...I'm gonna try to pop the ua709 in the op amp ODs I've build, maybe I might get some intersting results!!!

Cheers!

[PRR]

Don't "pop" a '709 unless you know what you are doing.

They need extra parts to work right.

They die *instantly* if the output is shorted.

They are worth a few dollars to a few old-old studio gear owners who have to maintain '709-based gear.

That's a remarkably useful bunch of chips *if* you live in the early 1970s and do a lot of logic circuits. I sense you are not the best person for this pile.

[poppyman]

That's waht I thought too, as a second guess. That's why I didn't buy the whole thing. I think there's up to a hundred of each, they definitely look unused.

I don't know what to do  :/

If someone round here is craving for them I could send a few for the price of the postage (I live in France), but I don't want to start selling something I don't konw anything about or something I can't be sure if it's still working etc....

Oh well.

[FUZZZZzzzz]

for the 709 this springs to mind