The early Texas Instruments TTL Databooks of 1974/1976 showed the full actual Gate-Logic Schematics for each of the TTL IC's. Can anyone please direct me to a facility that supplies these same type Datasheets.
It's one thing to show the gate-level circuit, as for a D-type flip flop in this case. It's quite another to show the full transistor-level circuit. Some of the old RCA COSMAC (i.e., cmos) datasheets did that.
Well, the 74/76 TI databook is online at bitsavers, if that's exactly what you want.
For the better, logic design since the 70's has progressed to be less logic-schematic driven and more truth-table and table-driven. Makes synthesis and testing infinitely easier after you get past the 7447 seven-segment decoder :-).
To be completely fair, some of the chips in the 76 TI databook were actually bipolar PROM's preprogrammed with a truth table and if you look at these chips in the 76 TI databook, for example the 74184, you just see truth tables.
Nostalgia..... I used those to replace a 32 x 64 diode microprogram board on PDP 'type' computer....They made up the op codes and the instruction set.... :) Dam unreliable in those days :(
Was that the Hoover "dam" or some other structure ?:-)
...Jim Thompson
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| James E.Thompson, P.E. | mens |
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America: Land of the Free, Because of the Brave
Hoover has been running more or less uneventfully for about 70 years. I call that pretty reliable.
It must be some other structure (Teton?)
--
"Electricity is of two kinds, positive and negative. The difference
is, I presume, that one comes a little more expensive, but is more
durable; the other is a cheaper thing, but the moths get into it."
(Stephen Leacock)
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