Search in: Word
Vietnamese keyboard: Off
Virtual keyboard: Show
Computing (FOLDOC) dictionary
Transistor-Transistor Logic
Jump to user comments
(TTL) A common semiconductor technology for building discrete
digital logic integrated circuits. It originated from TexasInstruments in 1965.
There have been several series of TTL logic:
7400: 10 ns propagation time, 10 mW/gate power consumption,
74L00: Low power: higher resistances, less dissipation
(1 mW), longer propagation time (30 ns);
74H00: High power: lower resistances, more dissipation: less
sensitivity for noise;
74S00: Schottky-clamped: faster switching (3 ns, 19 mW) by
using Schottky diodes to prevent the transistors from