transistor-transistor logic definition of transistor-transistor logic in the Free Online Encyclopedia.

transistor-transistor logic [tran′zis·tər tran′zis·tər ′läj·ik]

(electronics)

A logic circuit containing two transistors, for driving large output capacitances at high speed. Abbreviated T²L; TTL.

Transistor-Transistor 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.

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No references found	Avago's AEDR-8400-14x series of high resolution optical encoders provide up to 318 lines per inch (LPI) resolution, have two-channel quadrature digital output for directional sensing, and are transistor-transistor logic (TTL) compatible. Avago Technologies Adds High Resolution Encoder to Series of ... by Business Wire The NBSG72A features two inputs either of which can be routed directly, multiplexed to one or two outputs or fanned-out to both -- via the single-ended control pins that accept low voltage ECL (LVECL) or low voltage CMOS (LVCMOS) and transistor-transistor logic (TTL). ON Semiconductor Introduces the Industry's Fastest Emitter Coupled ... by Business Wire All Gigacomm(TM) devices offer ON Semiconductor's AnyLevel(TM) input technology that accepts Negative Emitter Coupled Logic (NECL), Positive Emitter Coupled Logic (PECL), Current Mode Logic (CML), Low Voltage CMOS, Low Voltage Transistor-Transistor Logic (LVTTL), or Low Voltage Differential Signaling (LVDS). ON Semiconductor Offers High-Speed, Silicon Germanium, Data- and ... by Business Wire	transient phenomena transient problem transient program Transient Program Area transient RANS modeling transient response transient situational disturbance transient state transient suppressor transient x-ray source transillumination transistance Transistor transistor amplifier transistor biasing transistor characteristics transistor chip transistor circuit transistor clipping circuit transistor concept transistor gain transistor input resistance transistor magnetic amplifier transistor memory Transistor Radio transistor-transistor logic transit transit circle transit compass transit declinometer Transit Instrument transit line transit mix transit network Transit of Planets Across the Sun's Disk transit survey transit telescope transit theodolite transit time transit-and-stadia survey transit-mix truck transit-mixed concrete transit-time microwave diode transit-time mode Transition transition ad transition altitude transition boiling transition card transition curve transition element	transistor biasing Transistor Bipolar de Juntura transistor characteristics transistor chip transistor circuit transistor clipping circuit transistor concept Transistor Controlled Breakerless Ignition Transistor Electroabsorption Transceiver transistor gain transistor input resistance transistor magnetic amplifier transistor memory Transistor Operated Voltage Divider Transistor Outline Metal-Can Package transistor radio transistor radio transistor radio Transistor radios Transistor radios Transistor radios Transistor Resistor Logic Transistor Revolt Transistor Scattering Parameter transistor transistor logic transistor transistor logic transistor transistor logic Transistor Under Test Transistor Voltmeter Transistor-Resistor-Transistor Logic transistor-transistor logic Transistor-Transistor Logic, Schottky Barrier transistorisation transistorise transistorised Transistorised Coil Ignition transistorises transistorising transistorization transistorize transistorized transistorized transistorized Transistorized Airborne Digital Computer Transistorized Automatic Computer Transistorized Ignition Transistorized Pointless Ignition Transistorized Real-Time Incremental Computer transistorizes transistorizing Transistors Transistors Transistors transit transit transit transit transit transit transit Transit (surveying)

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Avago's AEDR-8400-14x series of high resolution optical encoders provide up to 318 lines per inch (LPI) resolution, have two-channel quadrature digital output for directional sensing, and are transistor-transistor logic (TTL) compatible.

Avago Technologies Adds High Resolution Encoder to Series of ... by Business Wire

The NBSG72A features two inputs either of which can be routed directly, multiplexed to one or two outputs or fanned-out to both -- via the single-ended control pins that accept low voltage ECL (LVECL) or low voltage CMOS (LVCMOS) and transistor-transistor logic (TTL).

ON Semiconductor Introduces the Industry's Fastest Emitter Coupled ... by Business Wire

All Gigacomm(TM) devices offer ON Semiconductor's AnyLevel(TM) input technology that accepts Negative Emitter Coupled Logic (NECL), Positive Emitter Coupled Logic (PECL), Current Mode Logic (CML), Low Voltage CMOS, Low Voltage Transistor-Transistor Logic (LVTTL), or Low Voltage Differential Signaling (LVDS).

ON Semiconductor Offers High-Speed, Silicon Germanium, Data- and ... by Business Wire

transient phenomena

transient problem

transient program

Transient Program Area

transient RANS modeling

transient response

transient situational disturbance

transient state

transient suppressor

transient x-ray source

transillumination