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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Omschrijving Prijs 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
RS-stocknr. 663-2495
FabrikantnummerSN74LS26N
0,836 €
Each (In a Pack of 5)
Aantal stuks
NAND Through Hole 4 2 No PDIP 14 LS - 5.25 V -1mA 32 ns @ 5 V 4.75 V 8mA
RS-stocknr. 145-0895
FabrikantnummerSN74LS26N
0,691 €
Each (In a Tube of 25)
Aantal stuks
NAND Through Hole 4 2 No PDIP 14 LS - 5.25 V -1mA 32 ns @ 5 V 4.75 V 8mA
RS-stocknr. 662-8976
FabrikantnummerSN74LVC2G86DCUR
0,482 €
Each (In a Pack of 5)
Aantal stuks
XOR Surface Mount 2 2 No VSSOP 8 LVC - 5.5 V -32mA 3.6 ns @ 5 V, 4.7 ns @ 3.3 V 1.65 V 32mA
RS-stocknr. 168-4296
FabrikantnummerSN74LVC2G86DCUT
0,268 €
Each (On a Reel of 250)
Aantal stuks
OR Surface Mount 2 2 No US 8 LVC Differential 5.5 V -4mA 4.2 ns @ 50 pF 1.65 V 32mA
RS-stocknr. 922-2868
FabrikantnummerSN74LVC2G86DCUR
0,32 €
Each (On a Reel of 3000)
Aantal stuks
XOR Surface Mount 2 2 No VSSOP 8 LVC - 5.5 V -32mA 3.6 ns @ 5 V, 4.7 ns @ 3.3 V 1.65 V 32mA
RS-stocknr. 368-5884
FabrikantnummerSN74LS00N
0,494 €
Each (In a Tube of 25)
Aantal stuks
NAND Through Hole 4 2 No PDIP 14 LS - 5.25 V -0.4mA 15 ns @ 5 V 4.75 V 8mA
RS-stocknr. 809-6071
FabrikantnummerSN74LVC2G86DCUT
0,264 €
Each (On a Tape of 10)
Aantal stuks
OR Surface Mount 2 2 No US 8 LVC Differential 5.5 V -4mA 4.2 ns @ 50 pF 1.65 V 32mA
RS-stocknr. 796-7941
FabrikantnummerCD4072BE
0,374 €
Each (In a Pack of 25)
Aantal stuks
OR Through Hole 2 4 No PDIP 14 4000 CMOS 18 V -4.2mA 250 ns @ 50 pF 3 V 4.2mA
RS-stocknr. 145-0039
FabrikantnummerCD4072BE
0,374 €
Each (In a Tube of 25)
Aantal stuks
OR Through Hole 2 4 No PDIP 14 4000 CMOS 18 V -4.2mA 250 ns @ 50 pF 3 V 4.2mA
RS-stocknr. 923-2357
FabrikantnummerSN74LS86AN
0,469 €
Each (In a Tube of 25)
Aantal stuks
XOR Through Hole 4 2 No PDIP 14 LS - 5.25 V -0.4mA 30 ns @ 5 V 4.75 V 8mA
RS-stocknr. 923-6699
FabrikantnummerCD4001BE
0,392 €
Each (In a Tube of 25)
Aantal stuks
NOR Through Hole 4 2 No PDIP 14 4000 - 18 V -4.2mA 90 ns @ 15 V, 120 ns @ 10 V, 250 ns @ 5 V 3 V 4.2mA
RS-stocknr. 217-5645
FabrikantnummerSN74HC32N
0,48 €
Each
Aantal stuks
OR Through Hole 4 2 No PDIP 14 HC - 6 V -5.2mA 17 ns @ 6 V, 20 ns @ 4.5 V, 100 ns @ 2 V 2 V 5.2mA
RS-stocknr. 527-079
FabrikantnummerCD4071BE
0,392 €
Each (In a Tube of 25)
Aantal stuks
OR Through Hole 4 2 No PDIP 14 4000 - 18 V -4.2mA 90 ns @ 15 V, 120 ns @ 10 V, 250 ns @ 5 V 3 V 4.2mA
RS-stocknr. 662-7550
FabrikantnummerSN74AC08DR
0,295 €
Each (In a Pack of 10)
Aantal stuks
AND Surface Mount 4 2 No SOIC 14 AC - 6 V -24mA 7.5 ns @ 5 V, 9.5 ns @ 3.3 V 2 V 24mA
RS-stocknr. 709-1961
FabrikantnummerCD4001BE
0,393 €
Each (In a Pack of 20)
Aantal stuks
NOR Through Hole 4 2 No PDIP 14 4000 - 18 V -4.2mA 90 ns @ 15 V, 120 ns @ 10 V, 250 ns @ 5 V 3 V 4.2mA
RS-stocknr. 100-0761
FabrikantnummerSN74HC32N
0,352 €
Each (In a Tube of 25)
Aantal stuks
OR Through Hole 4 2 No PDIP 14 HC - 6 V -5.2mA 17 ns @ 6 V, 20 ns @ 4.5 V, 100 ns @ 2 V 2 V 5.2mA
RS-stocknr. 179-2125
FabrikantnummerSN74AC08DR
0,289 €
Each (In a Tube of 50)
Aantal stuks
AND Surface Mount 4 2 No SOIC 14 AC - 6 V -24mA 7.5 ns @ 5 V, 9.5 ns @ 3.3 V 2 V 24mA
RS-stocknr. 368-5569
FabrikantnummerSN7400N
1,131 €
Each (In a Tube of 25)
Aantal stuks
NAND Through Hole 4 2 No PDIP 14 74 - 5.25 V -0.4mA 22 ns @ 5 V 4.75 V 16mA
RS-stocknr. 527-441
FabrikantnummerCD4030BE
0,374 €
Each (In a Tube of 25)
Aantal stuks
XOR Through Hole 4 2 No PDIP 14 4000 - 18 V -4.2mA 100 ns @ 15 V, 130 ns @ 10 V, 280 ns @ 5 V 3 V 4.2mA
RS-stocknr. 304-093
FabrikantnummerSN7432N
1,95 €
Each
Aantal stuks
OR Through Hole 4 2 No PDIP 14 74 - 5.25 V -0.8mA 22 ns @ 5 V 4.75 V 16mA