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.

The RS components range offers semiconductor logic gates from leading brands, with input/output configurations to suit the demands of your digital circuit.

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.

There are also logic gates referred to as Exclusive Gates.

• XNOR (EX-NOR) Gate. These gates process a high signal if all input signals are true, e.g: if there are two one signals or two zero signals.

• XOR Gate. Unlike an XNOR, XOR performs exclusive dis-junction, which means it will only output a true signal if exactly one of the inputs are true.

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. Though their essential functions remain unchanged, their implementations are many.

• Encoders
• Decoders
• Multiplexers
• Demultiplexers
• Full adders
• Half adders

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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 171-3308
Référence fabricant74LCX86FT
MarqueToshiba
0,07 €
Each (On a Reel of 2500)
Unité
XOR Surface Mount 4 2 - TSSOP 14 74LCX CMOS 3.6 V -24mA 38.5 ns @ 50 pF 1.65 V 24mA
N° de stock RS 171-3357
Référence fabricant74VHCT08AFT
MarqueToshiba
0,059 €
Each (On a Reel of 2500)
Unité
AND Surface Mount 4 2 - TSSOP 14 74VHCT CMOS, TTL 5.5 V -8mA 10 ns @ 50 pF 4.5 V 8mA
N° de stock RS 171-3490
Référence fabricant74VHCT32AFT
MarqueToshiba
0,149 €
Each (In a Pack of 50)
Unité
OR Surface Mount 4 2 - TSSOP 14 74VHCT CMOS, TTL 5.5 V -8mA 9.5 ns @ 50 pF 4.5 V 8mA
N° de stock RS 171-3425
Référence fabricant74HC00D
MarqueToshiba
0,265 €
Each (In a Pack of 50)
Unité
NAND Surface Mount 4 2 - SOIC 14 74HC - 6 V -5.2mA 135 ns @ 50 pF 2 V 5.2mA
N° de stock RS 171-3338
Référence fabricant74VHC32FT
MarqueToshiba
0,077 €
Each (On a Reel of 2500)
Unité
OR Surface Mount 4 2 - TSSOP 14 74VHC CMOS, TTL 5.5 V -8mA 14.5 ns @ 50 pF 2 V 8mA
N° de stock RS 171-3317
Référence fabricant74VHC132FT
MarqueToshiba
0,07 €
Each (On a Reel of 2500)
Unité
NAND Surface Mount 4 2 Yes TSSOP 14 74VHC CMOS, Schmitt Trigger 5.5 V -8mA 19.5 ns @ 50 pF 2 V 8mA
N° de stock RS 171-3181
Référence fabricantTC7SZ02FE
MarqueToshiba
0,086 €
Each (In a Pack of 100)
Unité
NOR Surface Mount 1 2 - SOT-553 5 - CMOS 5.5 V -32mA 11 ns @ 15 pF 1.65 V 32mA
N° de stock RS 171-3035
Référence fabricantTC7SZ86F
MarqueToshiba
0,07 €
Each (On a Reel of 3000)
Unité
XOR Surface Mount 1 2 - SOT-25 5 - CMOS 5.5 V -32mA 13.5 ns @ 15 pF 1.65 V 32mA
N° de stock RS 171-3380
Référence fabricant74HC132D
MarqueToshiba
0,172 €
Each (On a Reel of 2500)
Unité
NAND Surface Mount 4 2 Yes SOIC 14 74HC CMOS, Schmitt Trigger 6 V -5.2mA 140 ns @ 50 pF 2 V 5.2mA
N° de stock RS 891-2793
Référence fabricantTC7SH02FU(T5L,JF,T
MarqueToshiba
1,156 €
Each (In a Pack of 25)
Unité
NOR Surface Mount 1 2 No SSOP 5 VHS CMOS 5.5 V -8mA 13 ns @ 50 pF 2 V 8mA
N° de stock RS 171-3421
Référence fabricant74VHC20FT
MarqueToshiba
0,23 €
Each (In a Pack of 50)
Unité
NAND Surface Mount 2 4 - TSSOP 14 74VHC CMOS, TTL 5.5 V -8mA 13 ns @ 50 pF 2 V 8mA
N° de stock RS 891-2787
Référence fabricantTC74VHC03FT(EL,K)
MarqueToshiba
0,286 €
Each (In a Pack of 10)
Unité
NAND Surface Mount 1 2 No TSSOP 14 VHC TTL 5.5 V - 13 ns @ 50 pF 2 V 5.5µA
N° de stock RS 171-3155
Référence fabricantTC7WZ02FU
MarqueToshiba
0,072 €
Each (In a Pack of 50)
Unité
NOR Surface Mount 2 2 - SOT-505 8 - CMOS 5.5 V -32mA 10 ns @ 15 pF 1.65 V 32mA
N° de stock RS 171-3061
Référence fabricantTC7SH09FU
MarqueToshiba
0,086 €
Each (In a Pack of 100)
Unité
AND Surface Mount 1 2 - SOT-353 5 - CMOS 5.5 V - 14 ns @ 50 pF 2 V 8mA
N° de stock RS 144-5322
Référence fabricantTC7SH08FU,LJ(CT
MarqueToshiba
0,079 €
Each (In a Pack of 100)
Unité
AND Surface Mount 1 2 - SOT-353 5 CMOS CMOS 5.5 V dc - 15.5 ns @ 50 pF 2 V dc -
N° de stock RS 891-2850
Référence fabricantTC7WH32FK(TE85L,F)
MarqueToshiba
0,30 €
Each (In a Pack of 10)
Unité
OR Surface Mount 1 2 No SSOP 8 - CMOS 5.5 V -8mA 13 ns @ 50 pF 2 V 8mA
N° de stock RS 171-3016
Référence fabricantTC7SZ00FE
MarqueToshiba
0,047 €
Each (On a Reel of 4000)
Unité
NAND Surface Mount 1 2 - SOT-553 5 - CMOS 5.5 V -32mA 11 ns @ 15 pF 1.65 V 32mA
N° de stock RS 171-3007
Référence fabricant74HC86D
MarqueToshiba
0,087 €
Each (On a Reel of 2500)
Unité
XOR Surface Mount 4 2 - SOIC 14 74HC - 6 V -5.2mA 180 ns @ 50 pF 2 V 5.2mA
N° de stock RS 171-3542
Référence fabricant74HC132D
MarqueToshiba
0,276 €
Each (In a Pack of 20)
Unité
NAND Surface Mount 4 2 Yes SOIC 14 74HC CMOS, Schmitt Trigger 6 V -5.2mA 140 ns @ 50 pF 2 V 5.2mA
N° de stock RS 171-3469
Référence fabricant74LCX32FT
MarqueToshiba
0,072 €
Each (In a Pack of 50)
Unité
OR Surface Mount 4 2 - TSSOP 14 74LCX CMOS 3.6 V -24mA 22 ns @ 50 pF 1.65 V 24mA