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

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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 170-7993
Référence fabricantHEF4011BT,653
MarqueNexperia
0,101 €
Each (On a Reel of 2500)
Unité
NAND Surface Mount 4 2 - SO 14 HEF CMOS 15 V -4.2mA 110 ns @ 50 pF 3 V 4.2mA
N° de stock RS 510-308
Référence fabricant74LVC1G00GW,125
MarqueNexperia
0,15 €
Each (In a Pack of 50)
Unité
NAND Surface Mount 1 2 No TSSOP 5 LVC - 5.5 V -32mA - 1.65 V 32mA
N° de stock RS 162-7470
Référence fabricantSN74LVC1G332DCKRG4
0,084 €
Each (On a Reel of 3000)
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OR Surface Mount 1 3 No SC-70 6 LVC - 5.5 V -32mA 3.5 ns @ 5 V, 4.8 ns @ 3.3 V 1.65 V 32mA
N° de stock RS 813-9244
Référence fabricant74AUP1G02GW,125
MarqueNexperia
0,231 €
Each (On a Tape of 40)
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NOR Surface Mount 1 2 Yes TSSOP 5 AUP Schmitt Trigger 3.6 V -4mA 24.7 ns @ 30 pF 0.8 V 4mA
N° de stock RS 662-9685
Référence fabricantCD4093BPW
0,329 €
Each (In a Pack of 10)
Unité
NAND Surface Mount 4 2 Yes TSSOP 14 4000 Schmitt Trigger 18 V -4.2mA 130 ns @ 15 V, 180 ns @ 10 V, 380 ns @ 5 V 3 V 4.2mA
N° de stock RS 662-8770
Référence fabricantSN74LVC1G332DCKRG4
0,219 €
Each (In a Pack of 10)
Unité
OR Surface Mount 1 3 No SC-70 6 LVC - 5.5 V -32mA 3.5 ns @ 5 V, 4.8 ns @ 3.3 V 1.65 V 32mA
N° de stock RS 178-7128
Référence fabricant74LVC1G08GW,125
MarqueNexperia
0,026 €
Each (On a Reel of 3000)
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AND Surface Mount 1 2 No TSSOP 5 LVC - 5.5 V -32mA - 1.65 V 32mA
N° de stock RS 510-201
Référence fabricant74LVC1G08GW,125
MarqueNexperia
0,12 €
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AND Surface Mount 1 2 No TSSOP 5 LVC - 5.5 V -32mA - 1.65 V 32mA
N° de stock RS 162-7462
Référence fabricantSN74LVC1G10DCKR
0,023 €
Each (On a Reel of 3000)
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NAND Surface Mount 1 3 No SC-70 6 LVC - 5.5 V -32mA 3.6 ns @ 5 V, 5 ns @ 3.3 V 1.65 V 32mA
N° de stock RS 662-8718
Référence fabricantSN74LVC1G10DCKR
0,033 €
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NAND Surface Mount 1 3 No SC-70 6 LVC - 5.5 V -32mA 3.6 ns @ 5 V, 5 ns @ 3.3 V 1.65 V 32mA
N° de stock RS 145-0690
Référence fabricantCD4093BPW
0,322 €
Each (In a Tube of 90)
Unité
NAND Surface Mount 4 2 Yes TSSOP 14 4000 Schmitt Trigger 18 V -4.2mA 130 ns @ 15 V, 180 ns @ 10 V, 380 ns @ 5 V 3 V 4.2mA
N° de stock RS 307-519
Référence fabricantSN74LS08N
0,61 €
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AND Through Hole 4 2 No PDIP 14 LS - 5.25 V -0.4mA 20 ns @ 5 V 4.75 V 8mA
N° de stock RS 165-9927
Référence fabricant74AUP1G02GW,125
MarqueNexperia
0,071 €
Each (On a Reel of 3000)
Unité
NOR Surface Mount 1 2 Yes TSSOP 5 AUP Schmitt Trigger 3.6 V -4mA 24.7 ns @ 30 pF 0.8 V 4mA
N° de stock RS 787-369
Référence fabricantHEF4011BT,652
MarqueNexperia
0,338 €
Each (In a Pack of 5)
Unité
NAND Surface Mount 4 2 No SOIC 14 4000 - 15 V -3.6mA 35 ns @ 15 V, 45 ns @ 10 V, 110 ns @ 5 V 3 V 3.6mA
N° de stock RS 145-0385
Référence fabricantSN74LS03N
0,691 €
Each (In a Tube of 25)
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NAND Through Hole 4 2 No PDIP 14 LS - 5.25 V -0.1mA 32 ns @ 5 V 4.75 V 8mA
N° de stock RS 662-9991
Référence fabricantCD74HC08M
0,417 €
Each (In a Pack of 10)
Unité
AND Surface Mount 4 2 No SOIC 14 HC - 6 V -5.2mA 15 ns @ 6 V, 18 ns @ 4.5 V, 90 ns @ 2 V 2 V 5.2mA
N° de stock RS 709-2407
Référence fabricantCD4019BE
0,355 €
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AND/OR Through Hole 4 2 No PDIP 16 4000 - 18 V -4.2mA 100 ns @ 15 V, 120 ns @ 10 V, 300 ns @ 5 V 3 V 4.2mA
N° de stock RS 333-4520
Référence fabricantCD74HCT32E
0,403 €
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OR Through Hole 4 2 No PDIP 14 HCT - 5.5 V -4mA 24 ns @ 4.5 V 4.5 V 4mA
N° de stock RS 662-6976
Référence fabricantCD74HC00M96
0,255 €
Each (In a Pack of 10)
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NAND Surface Mount 4 2 No SOIC 14 HC - 6 V -5.2mA 15 ns @ 6 V, 18 ns @ 4.5 V, 90 ns @ 2 V 2 V 5.2mA
N° de stock RS 483-7941
Référence fabricantHEF4077BT,652
MarqueNexperia
0,279 €
Each (In a Pack of 20)
Unité
XNOR Surface Mount 4 2 No SOIC 14 4000 - 15 V -3.6mA 55 ns @ 15 V, 70 ns @ 10 V, 150 ns @ 5 V 3 V 3.6mA