[sdiy] Weird old logic chips & transistors

[Scott Gravenhorst]

Hmm.  Might there be some analog application for RTL ICs?  I mean, would there
be a way to run them (like RTL inverters) in "linear" mode something like a
4069UB?  I don't know enough about RTL (probably not totem-pole output) to know
if I'm talking through my hat.


harrybissell <harrybissell at prodigy.net> wrote:
>Most of your haul is RTL  (two generations pre-TTL)
>
>I'm really depressed that your GRANDFATHER had this stuff... I makes
>me feel very, very old. Even older than I did today as I built a test fixture
>for work on old-school barrier strips (phenolic with lugs on it... :^).
>
>My first fuzzbox used RTL cans... it was from a 1970 article in Popular
>Electronic called "Timbre Gate" by Craig Anderton.
>
>H^) harry
>
>Aaron Lanterman wrote:
>
>> My parents came to visit this weekend, and my dad hauled along a massive
>> pile of old electronic parts that he had inherited from my granddad; I had
>> mentioned I was getting into circuits, and he thought they'd get more use
>> here with me.
>>
>> Anyway, I'm sorting through it - I came across some 74 series I
>> recognized, as well as a couple LM380N amplifiers, and a whole bunch of
>> LM324N op amps (which I recall seeing in some synth designs, if I recall
>> correctly).
>>
>> Then there's a whole bunch of weird logic chips. At least, when I type the
>> #'s into datasheetarchive, they come up as logic chips, with the following
>> descriptions (quantities I have listed in parens):
>>
>> N8416A 3-Input NAND-Function Logic Gate (4x)
>> N8270A          4-Bit Shift Register (2x)
>> N8826A          Dual J-K Flip-Flop      (2x)
>> N8266B (?) (2x)
>> SP321A          Dual J-K Flip-Flop       (1x)
>> SP328A          Dual D-Type Flip-Flop    (2x)
>> SP362A          Single Monostable Multivibrator (5x)
>> SP380A          1700mV nor gate   Philips (6x)
>>
>> MC667P          Dual Monostable Multivibrator (4x)
>> MC717P          2-Input NOR-Function Logic Gate (1x)
>> MC719P          4-Input NOR-Function Logic Gate (5x)
>> MC725 (handwritten) 4-Input NOR-Function Logic Gate (1x)
>> MC778P Dual D-Type Flip-Flop (5x)
>> MC789P ? (5x)
>> MC790P ? (1x) (dual JK flip-flop - from online forum)
>> MC791P ? (1x)
>> MC792P   3-Input NOR-Function Logic Gate (1x)
>> MC793P          3-Input NOR-Function Logic Gate (2x)
>> MC830P          4-Input NAND-Function Logic Gate (10x)
>> MC846P          2-Input NAND-Function Logic Gate (1x)
>> MC894P          4-Bit Shift Register (2x)
>> MC9820P  2-Input Multifunction Logic Gate (2x)
>>
>> Anyone seen these before? What in the world is all this? Are these some
>> weird pre-TTL kind of technology? Would they be useful in anything now,
>> i.e. could I interface them with the 74 series?
>>
>> After much googling I can't seem to find any actual datasheets.
>>
>> Oh, and there's piles and piles of transistors, that I'm just starting to
>> sort, including a whole bunch of 2n299 germaniums.
>>
>> There's quite a few D29A4s and 2n3505... would those be of any use? (When
>> I look at a transistor data sheet I don't really know what what I should
>> be looking for...)
>>
>> - Aaron
>>
>> -----------------------------------------------------------------------------
>>
>> Dr. Aaron Lanterman, Asst. Prof.       Voice:  404-385-2548
>> School of Electrical and Comp. Eng.    Fax:    404-894-8363
>> Georgia Institute of Technology        E-mail: lanterma at ece.gatech.edu
>> Mail Code 0250                         Web:    users.ece.gatech.edu/~lanterma
>> Atlanta, GA 30332                      Office: GCATT 334B
>

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-- Scott Gravenhorst | LegoManiac / Lego Trains / RIS 1.5
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