Qué (quién) es Resistor-Transistor Logic - definición
CLASS OF DIGITAL CIRCUITS
Resistor-transistor logic; Transistor–resistor logic; Transistor-resistor logic; Transistor resistor logic; Resistor transistor logic; Resistor-capacitor-transistor logic; RCTL; Resistor capacitor transistor logic
![Flatpack]] RTL NOR gate integrated circuits in the [[Apollo guidance computer]]](https://commons.wikimedia.org/wiki/Special:FilePath/Agc flatp.jpg?width=200 "Flatpack]] RTL NOR gate integrated circuits in the [[Apollo guidance computer]]")
![Photograph of the dual 3-input NOR gate chip used to build the [[Apollo Guidance Computer]]. Connections (clockwise from top center) ground, inputs (3), output, power (V<sub>cc</sub>), output, inputs (3). The thin wires from the terminals to the transistors are resistors.](https://commons.wikimedia.org/wiki/Special:FilePath/Agc nor2.jpg?width=200 "Photograph of the dual 3-input NOR gate chip used to build the [[Apollo Guidance Computer]]. Connections (clockwise from top center) ground, inputs (3), output, power (V<sub>cc</sub>), output, inputs (3). The thin wires from the terminals to the transistors are resistors.")
![Schematic of a multi-transistor RTL NOR gate, as used in the [[Apollo Guidance Computer]] integrated circuits.<ref name=AGC2005011>
[[Apollo Guidance Computer]] schematics, [http://klabs.org/history/ech/agc_schematics/logic/5011-1.jpg Dwg. No. 2005011].
</ref>](https://commons.wikimedia.org/wiki/Special:FilePath/RTL 3-Input NOR Gate.svg?width=200 "Schematic of a multi-transistor RTL NOR gate, as used in the [[Apollo Guidance Computer]] integrated circuits.<ref name=AGC2005011>
[[Apollo Guidance Computer]] schematics, [http://klabs.org/history/ech/agc_schematics/logic/5011-1.jpg Dwg. No. 2005011].
</ref>")
Resistor–transistor logic
Resistor–transistor logic (RTL) (sometimes also transistor–resistor logic (TRL)) is a class of digital circuits built using resistors as the input network and bipolar junction transistors (BJTs) as switching devices. RTL is the earliest class of transistorized digital logic circuit used; other classes include diode–transistor logic (DTL) and transistor–transistor logic (TTL).
RCTL
Resistor-Capacitor-Transistor Logic
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.
Wikipedia
Resistor–transistor logic
Resistor–transistor logic (RTL) (sometimes also transistor–resistor logic (TRL)) is a class of digital circuits built using resistors as the input network and bipolar junction transistors (BJTs) as switching devices. RTL is the earliest class of transistorized digital logic circuit; it was succeeded by diode–transistor logic (DTL) and transistor–transistor logic (TTL).
RTL circuits were first constructed with discrete components, but in 1961 it became the first digital logic family to be produced as a monolithic integrated circuit. RTL integrated circuits were used in the Apollo Guidance Computer, whose design begun in 1961 and which first flew in 1966.
