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.

Types of Logic Gate

Logic gates have distinct logic functions. The most common of these are known as basic gates. These include;

  • AND Gates. This gate has multiple inputs that are processed to a single signal 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. Like 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

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Description Prix 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
N° de stock RS 662-9685
Référence fabricantCD4093BPW
0,322 €
Each (In a Pack of 10)
Unité
NAND Surface Mount 4 2 Yes TSSOP 14 4000 Schmitt Trigger 18 V -4.2mA 130 ns @ 15 V, 180 ns @ 10 V, 380 ns @ 5 V 3 V 4.2mA
N° de stock RS 510-201
Référence fabricant74LVC1G08GW,125
MarqueNexperia
0,12 €
Each (In a Pack of 50)
Unité
AND Surface Mount 1 2 No TSSOP 5 LVC - 5.5 V -32mA - 1.65 V 32mA
N° de stock RS 103-8153
Référence fabricantHEF4011BT,652
MarqueNexperia
0,25 €
Each (In a Tube of 57)
Unité
NAND Surface Mount 4 2 No SOIC 14 4000 - 15 V -3.6mA 110 ns @ 5 V, 35 ns @ 15 V, 45 ns @ 10 V 3 V 3.6mA
N° de stock RS 170-7993
Référence fabricantHEF4011BT,653
MarqueNexperia
0,101 €
Each (On a Reel of 2500)
Unité
NAND Surface Mount 4 2 - SO 14 HEF CMOS 15 V -4.2mA 110 ns @ 50 pF 3 V 4.2mA
N° de stock RS 162-7470
Référence fabricantSN74LVC1G332DCKRG4
0,076 €
Each (On a Reel of 3000)
Unité
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
N° de stock RS 805-1576
Référence fabricantM74VHC1GT86DFT1G
0,073 €
Each (In a Pack of 100)
Unité
XOR Surface Mount 1 2 No SC-88A 5 VHC TTL 5.5 V -8mA 19.5 ns @ 50 pF 3 V 8mA
N° de stock RS 442-909
Référence fabricantSN74HC02N
0,48 €
Each
Unité
NOR 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
N° de stock RS 787-369
Référence fabricantHEF4011BT,652
MarqueNexperia
0,338 €
Each (In a Pack of 5)
Unité
NAND Surface Mount 4 2 No SOIC 14 4000 - 15 V -3.6mA 110 ns @ 5 V, 35 ns @ 15 V, 45 ns @ 10 V 3 V 3.6mA
N° de stock RS 527-069
Référence fabricantCD4070BE
0,362 €
Each (In a Tube of 25)
Unité
XOR Through Hole 4 2 No PDIP 14 4000 - 18 V -4.2mA 100 ns @ 15 V, 130 ns @ 10 V, 280 ns @ 5 V 3 V 4.2mA
N° de stock RS 923-2477
Référence fabricantSN74HC02N
0,27 €
Each (In a Tube of 25)
Unité
NOR 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
N° de stock RS 662-8770
Référence fabricantSN74LVC1G332DCKRG4
0,214 €
Each (In a Pack of 10)
Unité
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
N° de stock RS 670-9790
Référence fabricantNC7SZ08M5X
0,248 €
Each (In a Pack of 10)
Unité
AND Surface Mount 1 2 No SOT-23 5 TinyLogic UHS - 5.5 V -32mA 4.5 ns @ 5 V, 5.2 ns @ 3.3 V 1.65 V 32mA
N° de stock RS 510-308
Référence fabricant74LVC1G00GW,125
MarqueNexperia
0,15 €
Each (In a Pack of 50)
Unité
NAND Surface Mount 1 2 No TSSOP 5 LVC - 5.5 V -32mA - 1.65 V 32mA
N° de stock RS 307-519
Référence fabricantSN74LS08N
0,56 €
Each
Unité
AND Through Hole 4 2 No PDIP 14 LS - 5.25 V -0.4mA 20 ns @ 5 V 4.75 V 8mA
N° de stock RS 809-6226
Référence fabricantCD4082BPW
0,325 €
Each (In a Pack of 15)
Unité
AND Surface Mount 2 4 No TSSOP 14 4000 Differential 18 V -4.2mA 250 ns @ 50 pF 3 V 4.2mA
N° de stock RS 124-2258
Référence fabricant74HC32D,652
MarqueNexperia
0,223 €
Each (In a Tube of 57)
Unité
OR Surface Mount 4 2 - SOIC 14 HC - 6 V -5.2mA 15 ns @ 6 V, 18 ns @ 4.5 V, 90 ns @ 2 V 2 V 5.2mA
N° de stock RS 145-0938
Référence fabricantCD4082BPW
0,325 €
Each (In a Tube of 90)
Unité
AND Surface Mount 2 4 No TSSOP 14 4000 Differential 18 V -4.2mA 250 ns @ 50 pF 3 V 4.2mA
N° de stock RS 178-7127
Référence fabricant74LVC1G02GW,125
MarqueNexperia
0,028 €
Each (On a Reel of 3000)
Unité
NOR Surface Mount 1 2 No TSSOP 5 LVC - 5.5 V -32mA - 1.65 V 32mA
N° de stock RS 662-8994
Référence fabricantSN74LVC32ADR
0,055 €
Each (In a Pack of 10)
Unité
OR Surface Mount 4 2 No SOIC 14 LVC - 3.6 V -24mA 3.6 ns @ 3.3 V, 4.2 ns @ 2.7 V 1.65 V 24mA
N° de stock RS 663-1887
Référence fabricantSN74HC08PW
0,285 €
Each (In a Pack of 10)
Unité
AND Surface Mount 4 2 No TSSOP 14 HC - 6 V -5.2mA 100 ns @ 2 V, 17 ns @ 6 V, 20 ns @ 4.5 V 2 V 5.2mA