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 124-2273
제조사 부품 번호74LVC2G32DP,125
제조사Nexperia
₩246.45
Each (On a Reel of 3000)
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OR Surface Mount 2 2 - TSSOP 8 LVC TTL 5.5 V -32mA 6 ns @ 50 pF 1.65 V 32mA
RS 제품 번호 923-6801
제조사 부품 번호CD4011UBE
₩649.45
Each (In a Tube of 25)
수량
NAND Through Hole 4 2 No PDIP 14 4000 - 18 V -4.2mA 50 ns @ 15 V, 60 ns @ 10 V, 120 ns @ 5 V 3 V 4.2mA
RS 제품 번호 709-2968
제조사 부품 번호CD4011UBE
₩649.45
Each (In a Pack of 10)
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NAND Through Hole 4 2 No PDIP 14 4000 - 18 V -4.2mA 50 ns @ 15 V, 60 ns @ 10 V, 120 ns @ 5 V 3 V 4.2mA
RS 제품 번호 169-7221
제조사 부품 번호74AHC86T14-13
제조사DiodesZetex
₩167.40
Each (On a Reel of 2500)
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XOR Surface Mount 4 2 Yes TSSOP 14 AHC Schmitt Trigger 5.5 V -4mA 18.5 ns @ 50 pF 2 V 8mA
RS 제품 번호 145-0875
제조사 부품 번호CD74HCT21M
₩297.60
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AND Surface Mount 2 4 No SOIC 14 HCT - 5.5 V -4mA 27 ns @ 4.5 V 4.5 V 4mA
RS 제품 번호 662-7282
제조사 부품 번호CD74HCT21M96
₩429.35
Each (In a Pack of 10)
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AND Surface Mount 2 4 No SOIC 14 HCT - 5.5 V -4mA 27 ns @ 4.5 V 4.5 V 4mA
RS 제품 번호 816-8839
제조사 부품 번호74LVC2G32DP,125
제조사Nexperia
₩567.30
Each (In a Pack of 30)
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OR Surface Mount 2 2 No TSSOP 8 LVC TTL 5.5 V -32mA 6 ns @ 50 pF 1.65 V 32mA
RS 제품 번호 100-0761
제조사 부품 번호SN74HC32N
₩664.95
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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 제품 번호 179-2163
제조사 부품 번호SN74AHCT08D
₩416.95
Each (In a Tube of 50)
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AND Surface Mount 4 2 No SOIC 14 AHCT - 5.5 V -8mA 7.9 ns @ 5 V 4.5 V 8mA
RS 제품 번호 709-2292
제조사 부품 번호SN74LS38NE4
₩1,421.35
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NAND Through Hole 4 2 No PDIP 14 LS - 5.25 V -0.25mA 32 ns @ 5 V 4.75 V 24mA
RS 제품 번호 527-924
제조사 부품 번호CD40107BE
₩739.35
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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 제품 번호 163-0594
제조사 부품 번호MC74HC1G32DTT1G
제조사ON Semiconductor
₩89.90
Each (On a Reel of 3000)
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OR Surface Mount 1 2 No TSOP 5 HC CMOS 6 V -2.6mA 155ns 2 V 2.6mA
RS 제품 번호 145-0438
제조사 부품 번호CD74HCT11M
₩534.75
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AND Surface Mount 3 3 No SOIC 14 HCT - 5.5 V -4mA 28 ns @ 4.5 V 4.5 V 4mA
RS 제품 번호 442-993
제조사 부품 번호SN74HC86N
₩674.25
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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 제품 번호 510-403
제조사 부품 번호74LVC1G32GW,125
제조사Nexperia
₩215.45
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OR Surface Mount 1 2 No TSSOP 5 LVC - 5.5 V -32mA - 1.65 V 32mA
RS 제품 번호 333-2748
제조사 부품 번호SN74HC00N
₩525.45
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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 제품 번호 663-1221
제조사 부품 번호SN74AHCT08D
₩486.70
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AND Surface Mount 4 2 No SOIC 14 AHCT - 5.5 V -8mA 7.9 ns @ 5 V 4.5 V 8mA
RS 제품 번호 166-1437
제조사 부품 번호74AHC1G08GW,125
제조사Nexperia
₩41.85
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AND Surface Mount 1 2 No TSSOP 5 AHC - 5.5 V -8mA 7.9 ns @ 4.5 V to 5.5 V, 12.3 ns @ 3 V to 3.6 V 2 V 8mA
RS 제품 번호 162-7416
제조사 부품 번호SN74LS38NE4
₩874.20
Each (In a Tube of 25)
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NAND Through Hole 4 2 No PDIP 14 LS - 5.25 V -0.25mA 32 ns @ 5 V 4.75 V 24mA
RS 제품 번호 663-0468
제조사 부품 번호CD74HCT11M
₩551.80
Each (In a Pack of 10)
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AND Surface Mount 3 3 No SOIC 14 HCT - 5.5 V -4mA 28 ns @ 4.5 V 4.5 V 4mA