The logic that starts with the number 74 are all parts in the TTL
(transistor-transistor-logic) family, that have compatible input and
output signals. This family is further subdivided into groups, based
on improvements in chip technology that either lowered the supply
current or increased the speed, or both. The 74L family uses less
current. The 74S series uses more current, but is much faster,
because of the addition of Schottky diode feedback that prevents
transistor saturation. The 74LS family is a compromise that uses the
Schottky diodes but lowered the supply current. The 74F series was a
much faster chip process, etc.
In exame my sir asked me why in logic gates IC no. Starts with 74 , not
12 or 23 or somthing like that? Plese give me answer.
And in Op-Amp why it is 741? plesae tell me.
The opamp named 741 just got a number that was an arbitrary choice,
and has nothing to do with the 74 logic family.