Logic Gates

Logic gates are physical components in a circuit that control the flow of a signal by implementing a Boolean function, processing a signal to binary information. Logic gates are foundational in logic circuits, or in any electronic circuit process that involves digital to analogue signal conversion, or the flow of digital information. Logic gates are primarily implemented using diodes or transistors as electrical switches, but can also be constructed using electromagnetic relays (relay logic), vacuum tubes, optics, molecules, fluidic logic, pneumatic logic, or even mechanical elements.

Types of Logic Gate

Logic gates have distinct logic functions. The most common of these are known as basic gates. These include:

  • AND Gates - these gates have multiple inputs that are processed into a single signal output depending on the positive combination of high signals in the inputs. It will only produce a high signal if both inputs register as high (e.g. two ones will result in a one, otherwise, it will have an output of zero).
  • OR Gates - similar to the AND gate, an OR gate has multiple inputs and a single output. In this case, it does not require a positive combination of one signals but will implement logical produce a high signal if one or all of the inputs are high. (e.g a one and a zero, or two ones, may produce a high signal, but two zeros will produce zeros.)
  • NOT Gates -also known as inverters, the NOT gates will process the signal as the opposite of its value (eg. a one will invert as a zero, and a zero will invert as a 1.)

There are also combined function logic gates that modify typical functions with an inversion.

  • NAND Gate - unlike an AND gate, NAND will process two high signals as a zero and all other combinations as a one.
  • NOR Gate - unlike an OR gate, this will produce a one if the inputs register a zero signal in any combination, rather than a high signal.
  • Buffer Gate - a buffer logic gate behaves in the opposite manner of a NOT gate, in that it passes a signal unchanged from input to output.

Applications

As CPUs employ binary logic, logic gates are essentially the building blocks of computers. As such, they can be found in many kinds of digital circuits such as:

  • Encoders & Decoders
  • Multiplexers & Demultiplexers
  • Full and half adders

...
Voir plus Voir moins

Filtres

Afficher 1281 - 1300 des 1318 produits
Nombre de résultats par page
Description Prix Logic Function Mounting Type Number of Elements Number of Inputs per Gate Schmitt Trigger Input Package Type Pin Count Logic Family Input Type Maximum Operating Supply Voltage Maximum High Level Output Current Maximum Propagation Delay Time @ Maximum CL Minimum Operating Supply Voltage Maximum Low Level Output Current
N° de stock RS 663-2234
Référence fabricantSN74HCT02PW
0,263 €
Each (In a Pack of 10)
Unité
NOR Surface Mount 4 2 No TSSOP 14 HCT - 5.5 V -4mA 18 ns @ 5.5 V, 20 ns @ 4.5 V 4.5 V 4mA
N° de stock RS 186-7305
Référence fabricantMC74VHC1G09DFT1G
0,042 €
Each (On a Reel of 3000)
Unité
AND Surface Mount - 2 - SC 5 VHC Single 5.5 V - 16.5 ns @ 30 pF 2 V 24mA
N° de stock RS 122-0346
Référence fabricant74LVC1G08SE-7
MarqueDiodesZetex
0,039 €
Each (On a Reel of 3000)
Unité
AND Surface Mount 1 2 - SOT-353 5 LVC - 5.5 V -32mA 5.5ns 1.65 V 32mA
N° de stock RS 186-8696
Référence fabricantMM74HC08M
0,428 €
Each (In a Pack of 25)
Unité
AND Surface Mount - 2 - SOIC 14 HC CMOS 6 V 5.2mA 20 ns @ 15 pF 2 V 5.2mA
N° de stock RS 166-2777
Référence fabricantMM74HCT08MX
0,158 €
Each (On a Reel of 2500)
Unité
AND Surface Mount 4 2 No SOIC 14 HCT - 5.5 V -4.8mA 18 ns @ 5 V 4.5 V 4.8mA
N° de stock RS 510-184
Référence fabricant74LVC132AD,112
MarqueNexperia
0,409 €
Each (In a Pack of 20)
Unité
NAND Surface Mount 4 2 Yes SOIC 14 LVC Schmitt Trigger 3.6 V -24mA - 1.2 V 24mA
N° de stock RS 307-553
Référence fabricantSN74LS20N
0,90 €
Each
Unité
NAND Through Hole 2 4 No PDIP 14 LS - 5.25 V -0.4mA 15 ns @ 5 V 4.75 V 8mA
N° de stock RS 179-2171
Référence fabricantSN74HC03D
0,342 €
Each (In a Tube of 50)
Unité
NAND Surface Mount 4 2 No SOIC 14 HC - 6 V -0.005mA 23 ns @ 6 V, 25 ns @ 4.5 V, 105 ns @ 2 V 2 V 5.2mA
N° de stock RS 145-7004
Référence fabricantCD4023BMT
0,259 €
Each (On a Reel of 250)
Unité
NAND Surface Mount 3 3 No SOIC 14 4000 Differential 18 V -4.2mA 250 ns @ 50 pF 3 V 4.2mA
N° de stock RS 171-3047
Référence fabricantTC7WZ02FU
MarqueToshiba
0,07 €
Each (On a Reel of 3000)
Unité
NOR Surface Mount 2 2 - SOT-505 8 - CMOS 5.5 V -32mA 10 ns @ 15 pF 1.65 V 32mA
N° de stock RS 171-3563
Référence fabricant74VHC27FT
MarqueToshiba
0,072 €
Each (In a Pack of 50)
Unité
NOR Surface Mount 3 3 - TSSOP 14 74VHC CMOS, TTL 5.5 V -8mA 15.5 ns @ 50 pF 2 V 8mA
N° de stock RS 163-0000
Référence fabricantMC10EP08DG
5,728 €
Each (In a Tube of 98)
Unité
XOR/XNOR Surface Mount 1 2 No SOIC 8 ECL ECL 5.5 V - 320ps 3 V -
N° de stock RS 670-9772
Référence fabricantNC7S32M5X
0,256 €
Each (In a Pack of 10)
Unité
OR Surface Mount 1 2 No SOT-23 5 TinyLogic HS - 6 V -2.6mA 17 ns @ 6 V, 20 ns @ 4.5 V, 27 ns @ 3 V, 100 ns @ 2 V 2 V 2.6mA
N° de stock RS 165-8878
Référence fabricant74LV00PW,112
MarqueNexperia
0,114 €
Each (On a Reel of 2400)
Unité
NAND Surface Mount 4 2 No TSSOP 14 LV CMOS 5.5 V -12mA 31 ns @ 15 pF 1 V 12mA
N° de stock RS 803-0860
Référence fabricant74LCX02MTC
0,553 €
Each (In a Pack of 47)
Unité
NOR Surface Mount 4 2 No TSSOP 14 LCX CMOS 3.6 V -24mA 6.2 ns @ 30 pF 2 V 24mA
N° de stock RS 144-5294
Référence fabricantTC7SET08FU,LJ(CT
MarqueToshiba
0,081 €
Each (In a Pack of 100)
Unité
AND Surface Mount 1 2 - SOT-353 5 CMOS CMOS 5.5 V dc - 11.5 ns @ 50 pF 4.5 V dc -
N° de stock RS 162-7335
Référence fabricantSN74ALS38BD
0,626 €
Each (In a Tube of 50)
Unité
NAND Surface Mount 4 2 No SOIC 14 ALS - 5.5 V -0.1mA 33 ns @ 4.5 V → 5.5 V 4.5 V 24mA
N° de stock RS 121-8309
Référence fabricantSN74HC86N
0,318 €
Each (In a Tube of 25)
Unité
XOR Through Hole 4 2 - PDIP 14 HC - 6 V -5.2mA 17 ns @ 6 V, 20 ns @ 4.5 V, 100 ns @ 2 V 2 V 5.2mA
N° de stock RS 528-448
Référence fabricantSN74HC32D
0,271 €
Each (In a Tube of 50)
Unité
OR Surface Mount 4 2 No SOIC 14 HC - 6 V -5.2mA 17 ns @ 6 V, 20 ns @ 4.5 V, 100 ns @ 2 V 2 V 5.2mA
N° de stock RS 809-6179
Référence fabricantCD4023BMT
0,264 €
Each (In a Pack of 10)
Unité
NAND Surface Mount 3 3 No SOIC 14 4000 Differential 18 V -4.2mA 250 ns @ 50 pF 3 V 4.2mA