[sdiy] Weird old logic chips & transistors

[Mike Brown]

I had a bunch of motorola logic chips with the MC prefix, which I was told
were MECL logic.

they were ancient... definitely pre TTL.

MB

> -----Original Message-----
> From: owner-synth-diy at dropmix.xs4all.nl
> [mailto:owner-synth-diy at dropmix.xs4all.nl]On Behalf Of Aaron Lanterman
> Sent: Friday, December 02, 2005 11:09 PM
> To: Synth DIY
> Subject: [sdiy] Weird old logic chips & transistors
>
>
>
> 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
>