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%ما هو (من)٪ 1 - تعريف
SIMULATION OF PHYSICAL PROCESSES TAKING PLACE IN AN ELECTRONIC DEVICE
Transistor parameters; Transistor Models; Transistor models; Compact model (transistor)
Transistor-Transistor Logic
![Two-input TTL [[NAND gate]] with a simple output stage (simplified)](https://commons.wikimedia.org/wiki/Special:FilePath/TTL npn nand.svg?width=200 "Two-input TTL [[NAND gate]] with a simple output stage (simplified)")
CLASS OF DIGITAL CIRCUITS BUILT FROM BIPOLAR JUNCTION TRANSISTORS (BJTS) AND RESISTORS; TRANSISTORS PERFORM BOTH THE LOGIC FUNCTION (E.G. AND) AND THE AMPLIFYING FUNCTION
Transistor transistor logic; Transistor-transistor logic; LVTTL; Transistor Transistor Logic; FJ series; TTL logic; Transistor-to-transistor logic; Transistor-coupled transistor logic; TCTL; TTL (electronics); TTL (logic)
(TTL) A common semiconductor technology for building discrete
digital logic integrated circuits. It originated from {Texas
Instruments} in 1965.
There have been several series of TTL logic:
7400: 10 ns propagation time, 10 mW/gate power consumption,
obsolete;
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
saturation;
74LS00: Low power, Schottky-clamped (10 ns, 2 mW);
74AS00: Advanced Schottky: faster switching, less
dissipation, (1.5 ns, 10 mW);
74ALS00: Advanced Low power Schottky (4 ns, 1.3 mW).
For each 74xxx family there is a corresponding 54xxx family.
The 74 series are specified for operation at 0 - 70 C whereas
the 54 (military) series can operate at -55 - 125 C
See also CMOS, ECL.
LVTTL
CLASS OF DIGITAL CIRCUITS BUILT FROM BIPOLAR JUNCTION TRANSISTORS (BJTS) AND RESISTORS; TRANSISTORS PERFORM BOTH THE LOGIC FUNCTION (E.G. AND) AND THE AMPLIFYING FUNCTION
Transistor transistor logic; Transistor-transistor logic; LVTTL; Transistor Transistor Logic; FJ series; TTL logic; Transistor-to-transistor logic; Transistor-coupled transistor logic; TCTL; TTL (electronics); TTL (logic)
Low Voltage Transistor Transistor Level (Reference: IC)
Transistor–transistor logic
CLASS OF DIGITAL CIRCUITS BUILT FROM BIPOLAR JUNCTION TRANSISTORS (BJTS) AND RESISTORS; TRANSISTORS PERFORM BOTH THE LOGIC FUNCTION (E.G. AND) AND THE AMPLIFYING FUNCTION
Transistor transistor logic; Transistor-transistor logic; LVTTL; Transistor Transistor Logic; FJ series; TTL logic; Transistor-to-transistor logic; Transistor-coupled transistor logic; TCTL; TTL (electronics); TTL (logic)
Transistor–transistor logic (TTL) is a logic family built from bipolar junction transistors. Its name signifies that transistors perform both the logic function (the first "transistor") and the amplifying function (the second "transistor"), as opposed to resistor–transistor logic (RTL) or diode–transistor logic (DTL).
ويكيبيديا
Transistor model
Transistors are simple devices with complicated behavior. In order to ensure the reliable operation of circuits employing transistors, it is necessary to scientifically model the physical phenomena observed in their operation using transistor models. There exists a variety of different models that range in complexity and in purpose. Transistor models divide into two major groups: models for device design and models for circuit design.
