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. 813-9213
Fabrikantnummer74AHC1G08GV,125
FabrikantNexperia
€ 0,069
Each (In a Pack of 100)
Aantal stuks
AND Surface Mount 1 2 No SC-74A 5 AHC CMOS 5.5 V -8mA 16 ns @ 50 pF 2 V 8mA
RS-stocknr. 526-436
FabrikantnummerSN74AHC1G08DBVR
€ 0,175
Each (In a Pack of 25)
Aantal stuks
AND Surface Mount 1 2 No SOT-23 5 AHC - 5.5 V -8mA 7.9 ns @ 5 V, 12.3 ns @ 3.3 V 2 V 8mA
RS-stocknr. 121-8343
FabrikantnummerSN74AHC1G08DBVR
€ 0,039
Each (On a Reel of 3000)
Aantal stuks
AND Surface Mount 1 2 - SOT-23 5 AHC - 5.5 V -8mA 7.9 ns @ 5 V, 12.3 ns @ 3.3 V 2 V 8mA
RS-stocknr. 146-0513
Fabrikantnummer74AHC1G08GV,125
FabrikantNexperia
€ 0,029
Each (On a Reel of 3000)
Aantal stuks
AND Surface Mount 1 2 No SC-74A 5 AHC CMOS 5.5 V -8mA 16 ns @ 50 pF 2 V 8mA
RS-stocknr. 921-0811
FabrikantnummerULN2003V12S16-13
FabrikantDiodesZetex
€ 0,325
Each (In a Pack of 30)
Aantal stuks
- Surface Mount - - - SOIC 16 - CMOS 5 V - 140ns 3.3 V 140mA
RS-stocknr. 162-7470
FabrikantnummerSN74LVC1G332DCKRG4
€ 0,084
Each (On a Reel of 3000)
Aantal stuks
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
RS-stocknr. 121-8348
FabrikantnummerCD4011BE
€ 0,362
Each (In a Tube of 25)
Aantal stuks
NAND Through Hole 4 2 - 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. 662-8770
FabrikantnummerSN74LVC1G332DCKRG4
€ 0,219
Each (In a Pack of 10)
Aantal stuks
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
RS-stocknr. 165-8350
FabrikantnummerULN2003V12S16-13
FabrikantDiodesZetex
€ 0,144
Each (On a Reel of 2500)
Aantal stuks
- Surface Mount - - - SOIC 16 - CMOS 5 V - 140ns 3.3 V 140mA
RS-stocknr. 526-537
FabrikantnummerCD4011BE
€ 0,362
Each (In a Tube of 25)
Aantal stuks
NAND 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. 442-993
FabrikantnummerSN74HC86N
€ 0,40
Each
Aantal stuks
XOR 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. 333-2849
FabrikantnummerSN74HC132N
€ 0,312
Each (In a Tube of 25)
Aantal stuks
NAND Through Hole 4 2 Yes PDIP 14 HC Schmitt Trigger 6 V -5.2mA 21 ns @ 6 V, 25 ns @ 4.5 V, 120 ns @ 2 V 2 V 5.2mA
RS-stocknr. 145-0164
FabrikantnummerSN74AHC08D
€ 0,259
Each (In a Tube of 50)
Aantal stuks
AND Surface Mount 4 2 No SOIC 14 AHC - 5.5 V -8mA 7.9 ns @ 5 V, 12.3 ns @ 3.3 V 2 V 8mA
RS-stocknr. 121-8309
FabrikantnummerSN74HC86N
€ 0,318
Each (In a Tube of 25)
Aantal stuks
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
RS-stocknr. 663-1127
FabrikantnummerSN74AHC08D
€ 0,259
Each (In a Pack of 10)
Aantal stuks
AND Surface Mount 4 2 No SOIC 14 AHC - 5.5 V -8mA 7.9 ns @ 5 V, 12.3 ns @ 3.3 V 2 V 8mA
RS-stocknr. 443-025
FabrikantnummerSN74HC132N
€ 0,38
Each
Aantal stuks
NAND Through Hole 4 2 Yes PDIP 14 HC Schmitt Trigger 6 V -5.2mA 21 ns @ 6 V, 25 ns @ 4.5 V, 120 ns @ 2 V 2 V 5.2mA
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. 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. 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. 217-5702
FabrikantnummerSN74HCT00N
€ 0,48
Each
Aantal stuks
NAND Through Hole 4 2 No PDIP 14 HCT - 5.5 V -4mA 18 ns @ 5.5 V, 20 ns @ 4.5 V 4.5 V 4mA