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. 818-4156
FabrikantnummerNS5SQ11BV2
FabrikantOmron
€ 1.377,00
Each
Aantal stuks
- - - - - - - - - 27.6 V dc - - 20.4 V dc -
RS-stocknr. 124-2313
FabrikantnummerHEF4093BT,652
FabrikantNexperia
€ 0,292
Each (In a Tube of 57)
Aantal stuks
NAND Surface Mount 4 2 Yes SOIC 14 4000 Schmitt Trigger 15 V -4.2mA 60 ns @ 15 V, 80 ns @ 10 V, 185 ns @ 5 V 3 V 4.2mA
RS-stocknr. 333-2748
FabrikantnummerSN74HC00N
€ 0,352
Each (In a Tube of 25)
Aantal stuks
NAND Through Hole 4 2 No PDIP 14 HC - 6 V -5.2mA 15 ns @ 6 V, 18 ns @ 4.5 V, 90 ns @ 2 V 2 V 5.2mA
RS-stocknr. 518-9192
FabrikantnummerMC14093BDG
FabrikantON Semiconductor
€ 0,34
Each
Aantal stuks
NAND Surface Mount 4 2 Yes SOIC 14 4000 Schmitt Trigger 18 V -4.2mA 80 ns @ 15 V, 100 ns @ 10 V, 250 ns @ 5 V 3 V 4.2mA
RS-stocknr. 169-8555
FabrikantnummerNC7WZ16P6X
FabrikantON Semiconductor
€ 0,06
Each (On a Reel of 3000)
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 112-9966
Fabrikantnummer74HCT00D,652
FabrikantNexperia
€ 0,234
Each (In a Pack of 57)
Aantal stuks
NAND Surface Mount 4 2 No SOIC 14 HCT - 5.5 V -4mA - 4.5 V 4mA
RS-stocknr. 510-201
Fabrikantnummer74LVC1G08GW,125
FabrikantNexperia
€ 0,12
Each (In a Pack of 50)
Aantal stuks
AND Surface Mount 1 2 No TSSOP 5 LVC - 5.5 V -32mA - 1.65 V 32mA
RS-stocknr. 518-9192A
FabrikantnummerMC14093BDG
FabrikantON Semiconductor
€ 0,275
Each (In a Pack of 55)
Aantal stuks
NAND Surface Mount 4 2 Yes SOIC 14 4000 Schmitt Trigger 18 V -4.2mA 80 ns @ 15 V, 100 ns @ 10 V, 250 ns @ 5 V 3 V 4.2mA
RS-stocknr. 170-7964
FabrikantnummerHEF4093BT,653
FabrikantNexperia
€ 0,089
Each (On a Reel of 2500)
Aantal stuks
NAND Surface Mount 4 2 Yes SO 14 HEF Schmitt Trigger 15 V -4.2mA 185 ns @ 50 pF 3 V 4.2mA
RS-stocknr. 103-2926
FabrikantnummerMC14093BDG
FabrikantON Semiconductor
€ 0,267
Each (In a Tube of 55)
Aantal stuks
NAND Surface Mount 4 2 Yes SOIC 14 4000 Schmitt Trigger 18 V -4.2mA 80 ns @ 15 V, 100 ns @ 10 V, 250 ns @ 5 V 3 V 4.2mA
RS-stocknr. 688-1530
FabrikantnummerMC14093BDR2G
FabrikantON Semiconductor
€ 0,322
Each (In a Pack of 5)
Aantal stuks
NAND Surface Mount 4 2 Yes SOIC 14 4000 Schmitt Trigger 18 V -4.2mA 80 ns @ 15 V, 100 ns @ 10 V, 250 ns @ 5 V 3 V 4.2mA
RS-stocknr. 170-3419
FabrikantnummerMC14093BDR2G
FabrikantON Semiconductor
€ 0,085
Each (On a Reel of 2500)
Aantal stuks
NAND Surface Mount 4 2 Yes SOIC 14 4000 Schmitt Trigger 18 V -4.2mA 80 ns @ 15 V, 100 ns @ 10 V, 250 ns @ 5 V 3 V 4.2mA
RS-stocknr. 145-2953
FabrikantnummerMC74HC132ADTG
FabrikantON Semiconductor
€ 0,333
Each (In a Tube of 96)
Aantal stuks
NAND Surface Mount 4 2 Yes TSSOP 14 HC Schmitt Trigger 6 V 5.2mA 190ns 2 V 5.2mA
RS-stocknr. 178-7128
Fabrikantnummer74LVC1G08GW,125
FabrikantNexperia
€ 0,026
Each (On a Reel of 3000)
Aantal stuks
AND Surface Mount 1 2 No TSSOP 5 LVC - 5.5 V -32mA - 1.65 V 32mA
RS-stocknr. 922-2909
FabrikantnummerCD4093BM
€ 0,392
Each (In a Tube of 50)
Aantal stuks
NAND Surface Mount 4 2 Yes SOIC 14 4000 Schmitt Trigger 18 V -4.2mA 130 ns @ 15 V, 180 ns @ 10 V, 380 ns @ 5 V 3 V 4.2mA
RS-stocknr. 739-0098
FabrikantnummerNC7WZ16P6X
FabrikantON Semiconductor
€ 0,235
Each (In a Pack of 10)
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 170-8009
Fabrikantnummer74HCT00D,653
FabrikantNexperia
€ 0,079
Each (On a Reel of 2500)
Aantal stuks
NAND Surface Mount 4 2 - SO 14 74HCT TTL 5.5 V -4mA 29 ns @ 50 pF 4.5 V 5.2mA
RS-stocknr. 179-2161
FabrikantnummerSN74AHC32D
€ 0,253
Each (In a Tube of 50)
Aantal stuks
OR Surface Mount 4 2 No SOIC 14 AHC - 5.5 V -8mA 7.5 ns @ 5 V, 11.4 ns @ 3.3 V 2 V 8mA
RS-stocknr. 178-8963
FabrikantnummerSN74LVC1G32DBVR
€ 0,08
Each (On a Reel of 3000)
Aantal stuks
OR Surface Mount 1 2 No SOT-23 5 LVC - 5.5 V -32mA 4 ns @ 5 V, 4.5 ns @ 3.3 V 1.65 V 32mA
RS-stocknr. 146-0953
FabrikantnummerULN2003V12T16-13
FabrikantDiodesZetex
€ 0,129
Each (On a Reel of 2500)
Aantal stuks
- Surface Mount - - - TSSOP 16 - CMOS 5 V - 140ns 3.3 V 140mA