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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제품설명 단가 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 제품 번호 163-0473
제조사 부품 번호MC100EP05DTG
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₩9,385.25
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AND/NAND Surface Mount 1 2 No TSSOP 8 EP ECL 5.5 V - 320ps -3 V 0.5µA
RS 제품 번호 663-0159
제조사 부품 번호CD74HC21E
₩756.40
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AND Through Hole 2 4 No PDIP 14 HC - 6 V -5.2mA 19 ns @ 6 V, 22 ns @ 4.5 V, 110 ns @ 2 V 2 V 5.2mA
RS 제품 번호 791-8706
제조사 부품 번호74HC00BQ,115
제조사Nexperia
₩424.70
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NAND Surface Mount 4 2 No DHVQFN 14 HC CMOS 6 V -5.2mA 23 ns @ 6 V 2 V 5.2mA
RS 제품 번호 465-2223
제조사 부품 번호TC74VHC132FT
제조사Toshiba
₩713.00
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NAND Surface Mount 4 2 Yes TSSOP 14 VHC Schmitt Trigger 5.5 V -8mA 9.7 ns @ 5 V, 15.4 ns @ 3.3 V 2 V 8mA
RS 제품 번호 483-6364
제조사 부품 번호74HC03D,652
제조사Nexperia
₩410.75
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NAND Surface Mount 4 2 No SOIC 14 HC - 6 V -5.2mA 16 ns @ 6 V, 19 ns @ 4.5 V, 95 ns @ 2 V 2 V 5.2mA
RS 제품 번호 662-8257
제조사 부품 번호SN74HCT08DR
₩451.05
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AND Surface Mount 4 2 No SOIC 14 HCT - 5.5 V -4mA 22 ns @ 5.5 V, 24 ns @ 4.5 V 4.5 V 4mA
RS 제품 번호 186-8343
제조사 부품 번호MC74ACT153DG
제조사ON Semiconductor
₩688.20
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Multiplexer Surface Mount - 4 - SOIC 16 ACT TTL 5.5 V -24mA 17.5 ns @ 50 pF 4.5 V 24mA
RS 제품 번호 146-2138
제조사 부품 번호NC7ST32P5X
제조사ON Semiconductor
₩75.95
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OR Surface Mount 1 2 No SC-70 5 TinyLogic HST TTL 5.5 V -2mA 31 ns @ 50 pF 4.5 V 2mA
RS 제품 번호 806-3876
제조사 부품 번호MC74VHC00DR2G
제조사ON Semiconductor
₩499.10
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NAND Surface Mount 4 2 No SOIC 14 VHC CMOS 5.5 V -8mA 14.5 ns @ 50 pF 2 V 8mA
RS 제품 번호 181-7352
제조사 부품 번호HEF4030BT,652
제조사Nexperia
₩525.45
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XOR Surface Mount 4 2 - SO 14 HEF Single Ended 15 V -2.4mA 175 ns @ 50 pF 3 V 2.4mA
RS 제품 번호 146-0944
제조사 부품 번호74LVC1G57DW-7
제조사DiodesZetex
₩69.75
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Multifunction Surface Mount 1 2 No SOT-363 6 LVC CMOS 5.5 V -32mA 6.4 ns @ 50 pF 1.65 V 32mA
RS 제품 번호 510-083
제조사 부품 번호74AHC1G02GW,125
제조사Nexperia
₩292.95
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NOR Surface Mount 1 2 No TSSOP 5 AHC - 5.5 V -8mA 7.5 ns @ 5 V, 11.4 ns @ 3.3 V 2 V 8mA
RS 제품 번호 186-8402
제조사 부품 번호74AC08MTC
제조사ON Semiconductor
₩545.60
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AND Surface Mount 4 2 - TSSOP 14 AC - 6 V -24mA 10 ns @ 50 pF 2 V 24mA
RS 제품 번호 662-7746
제조사 부품 번호SN74AHC1G86DCKT
₩988.90
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XOR Surface Mount 1 2 No SC-70 5 AHC - 5.5 V -8mA 8.8 ns @ 5 V, 14.5 ns @ 3.3 V 2 V 8mA
RS 제품 번호 186-7334
제조사 부품 번호NL27WZU04DFT2G
제조사ON Semiconductor
₩134.85
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Inverter Surface Mount 2 1 - SC 88 NL - 5.5 V -16mA 11 ns @ 50 pF 1.65 V 16mA
RS 제품 번호 162-6715
제조사 부품 번호SN74LVC1G332DBVR
₩116.25
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OR Surface Mount 1 3 No SOT-23 6 LVC Differential 5.5 V -4mA 20 ns @ 50 pF 1.65 V 32mA
RS 제품 번호 177-6786
제조사 부품 번호74HCT132D,652
제조사Nexperia
₩626.20
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NAND Surface Mount 4 2 Yes SOIC 14 HCT Schmitt Trigger 5.5 V -4mA 33 ns @ 4.5 V 4.5 V 4mA
RS 제품 번호 169-8530
제조사 부품 번호NC7S32M5X
₩114.70
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OR Surface Mount 1 2 No SOT-23 5 TinyLogic HS - 6 V -2.6mA 17 ns @ 6 V, 20 ns @ 4.5 V, 27 ns @ 3 V, 100 ns @ 2 V 2 V 2.6mA
RS 제품 번호 145-0880
제조사 부품 번호SN74AHC132D
₩948.60
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NAND Surface Mount 4 2 Yes SOIC 14 AHC Schmitt Trigger 5.5 V -8mA 9.7 ns @ 5 V, 15.4 ns @ 3.3 V 2 V 8mA
RS 제품 번호 809-5775
제조사 부품 번호SN74HC00DT
₩1,043.15
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NAND Surface Mount 4 2 No SOIC 14 HC Differential 6 V -4mA 115 ns @ 50 pF 2 V 5.2mA