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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รายละเอียดสินค้า / Description ราคา / Price 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 Stock No. 922-2909
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CD4093BM
THB12.673
Each (In a Tube of 50)
Units
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 Stock No. 662-9676
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CD4093BM
THB20.824
Each: (In a Pack of 5)
Units
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 Stock No. 179-2125
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SN74AC08DR
THB9.20
Each (In a Tube of 50)
Units
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 Stock No. 662-7550
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SN74AC08DR
THB9.226
Each: (In a Pack of 10)
Units
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 Stock No. 527-924
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CD40107BE
THB11.329
Each (In a Tube of 50)
Units
NAND Through Hole 2 2 No PDIP 8 4000 - 18 V - 100 ns @ 15 V, 120 ns @ 10 V, 200 ns @ 5 V 3 V 89mA
RS Stock No. 923-2313
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SN7402N
THB58.56
Each (In a Tube of 25)
Units
NOR Through Hole 4 2 No PDIP 14 74 - 5.25 V -0.4mA 22 ns @ 5 V 4.75 V 16mA
RS Stock No. 305-513
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SN7402N
THB69.02
Each
Units
NOR Through Hole 4 2 No PDIP 14 74 - 5.25 V -0.4mA 22 ns @ 5 V 4.75 V 16mA
RS Stock No. 145-0710
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SN74HC02PW
THB10.85
Each (In a Tube of 90)
Units
NOR Surface Mount 4 2 No TSSOP 14 HC - 6 V -5.2mA 15 ns @ 6 V, 18 ns @ 4.5 V, 90 ns @ 2 V 2 V 5.2mA
RS Stock No. 178-8963
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SN74LVC1G32DBVR
THB1.457
Each (On a Reel of 3000)
Units
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 Stock No. 662-6857
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CD4071BM96
THB9.322
Each: (In a Pack of 10)
Units
OR Surface Mount 4 2 No SOIC 14 4000 - 18 V -4.2mA 90 ns @ 15 V, 120 ns @ 10 V, 250 ns @ 5 V 3 V 4.2mA
RS Stock No. 662-8676
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SN74LVC1G00DBVT
THB23.226
Each: (In a Pack of 5)
Units
NAND Surface Mount 1 2 No SOT-23 5 LVC - 5.5 V -32mA 4 ns @ 5 V, 4.7 ns @ 3.3 V 1.65 V 32mA
RS Stock No. 709-2699
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CD4025BE
THB11.021
Each: (In a Pack of 20)
Units
NOR Through Hole 3 3 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 Stock No. 145-0201
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CD74HC08E
THB12.141
Each (In a Tube of 25)
Units
AND 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 Stock No. 709-2053
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CD4023BE
THB11.284
Each: (In a Pack of 20)
Units
NAND Through Hole 3 3 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 Stock No. 162-6925
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CD4071BM96
THB5.341
Each (On a Reel of 2500)
Units
OR Surface Mount 4 2 No SOIC 14 4000 - 18 V -4.2mA 90 ns @ 15 V, 120 ns @ 10 V, 250 ns @ 5 V 3 V 4.2mA
RS Stock No. 526-537
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CD4011BE
THB12.424
Each (In a Tube of 25)
Units
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 Stock No. 121-8348
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CD4011BE
THB13.60
Each (In a Tube of 25)
Units
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 Stock No. 527-079
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CD4071BE
THB12.424
Each (In a Tube of 25)
Units
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 Stock No. 145-7386
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CD4025BE
THB11.98
Each (In a Tube of 25)
Units
NOR Through Hole 3 3 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 Stock No. 162-7416
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SN74LS38NE4
THB21.08
Each (In a Tube of 25)
Units
NAND Through Hole 4 2 No PDIP 14 LS - 5.25 V -0.25mA 32 ns @ 5 V 4.75 V 24mA