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 GateLogic 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 thepositive 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.ApplicationsAs 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 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. 923-2357
Mfr. Part No.SN74LS86AN
MYR2.019
Each (In a Tube of 25)
units
XOR Through Hole 4 2 No PDIP 14 LS - 5.25 V -0.4mA 30 ns @ 5 V 4.75 V 8mA
RS Stock No. 756-2814
Mfr. Part No.TC4001BF(EL,N,F)
BrandToshiba
MYR2.568
Each (In a Pack of 5)
units
NOR Surface Mount 4 2 No SOP 14 4000 CMOS 18 V dc -4mA 200ns 3 V dc +4mA
RS Stock No. 169-7126
Mfr. Part No.74LVC1G08Z-7
MYR0.323
Each (On a Reel of 4000)
units
AND Surface Mount 1 2 No SOT-553 5 LVC CMOS 5.5 V -32mA 7 ns @ 2.7 V 1.65 V 32mA
RS Stock No. 770-5333
Mfr. Part No.74LVC1G08Z-7
MYR1.264
Each (On a Tape of 50)
units
AND Surface Mount 1 2 No SOT-553 5 LVC CMOS 5.5 V -32mA 7 ns @ 2.7 V 1.65 V 32mA
RS Stock No. 178-9074
Mfr. Part No.SN74HC20NE4
MYR1.48
Each (In a Tube of 25)
units
NAND Through Hole 2 4 No PDIP 14 HC - 6 V -5.2mA 110 ns @ 2 V, 19 ns @ 6 V, 22 ns @ 4.5 V 2 V 5.2mA
RS Stock No. 663-2874
Mfr. Part No.SN74LVC32APW
MYR1.303
Each (In a Pack of 10)
units
OR Surface Mount 4 2 No TSSOP 14 LVC - 3.6 V -24mA 3.6 ns @ 3.3 V, 4.2 ns @ 2.7 V 1.65 V 24mA
RS Stock No. 145-1116
Mfr. Part No.SN74LS51D
MYR5.047
Each (In a Tube of 50)
units
Multifunction Surface Mount 2 2 No SOIC 14 LS - 5.25 V -0.4mA 20 ns @ 50 pF 4.75 V 8mA
RS Stock No. 709-2217
Mfr. Part No.SN74HC20NE4
MYR1.375
Each (In a Pack of 20)
units
NAND Through Hole 2 4 No PDIP 14 HC - 6 V -5.2mA 110 ns @ 2 V, 19 ns @ 6 V, 22 ns @ 4.5 V 2 V 5.2mA
RS Stock No. 178-8822
Mfr. Part No.SN74LVC32APW
MYR1.376
Each (In a Tube of 90)
units
OR Surface Mount 4 2 No TSSOP 14 LVC - 3.6 V -24mA 3.6 ns @ 3.3 V, 4.2 ns @ 2.7 V 1.65 V 24mA
RS Stock No. 709-2469
Mfr. Part No.SN74LS30NE4
MYR3.352
Each (In a Pack of 10)
units
NAND Through Hole 1 8 No PDIP 14 LS - 5.25 V -0.4mA 20 ns @ 5 V 4.75 V 8mA
RS Stock No. 368-6203
Mfr. Part No.SN74LS21N
MYR2.421
Each (In a Tube of 25)
units
AND Through Hole 2 4 No PDIP 14 LS - 5.25 V -0.4mA 20 ns @ 5 V 4.75 V 8mA
RS Stock No. 809-5889
Mfr. Part No.SN74LS51D
MYR5.047
Each (In a Pack of 10)
units
Multifunction Surface Mount 2 2 No SOIC 14 LS - 5.25 V -0.4mA 20 ns @ 50 pF 4.75 V 8mA
RS Stock No. 145-0472
Mfr. Part No.SN74LS30NE4
MYR3.352
Each (In a Tube of 25)
units
NAND Through Hole 1 8 No PDIP 14 LS - 5.25 V -0.4mA 20 ns @ 5 V 4.75 V 8mA
RS Stock No. 709-2665
Mfr. Part No.SN74HC21NE4
MYR1.648
Each (In a Pack of 20)
units
AND Through Hole 2 4 No PDIP 14 HC - 6 V -5.2mA 110 ns @ 2 V, 19 ns @ 6 V, 22 ns @ 4.5 V 2 V 5.2mA
RS Stock No. 662-8241
Mfr. Part No.SN74HCT00PWR
MYR1.156
Each (In a Pack of 10)
units
NAND Surface Mount 4 2 No TSSOP 14 HCT - 5.5 V -4mA 18 ns @ 5.5 V, 20 ns @ 4.5 V 4.5 V 4mA
RS Stock No. 761-4561
Mfr. Part No.NC7SZ86M5X
MYR1.309
Each (In a Pack of 25)
units
OR Surface Mount 1 2 No SOT-23 5 - CMOS 5.5 V -32mA 6.5ns 1.65 V 32mA
RS Stock No. 662-7698
Mfr. Part No.SN74AHC1G00DCKT
MYR3.144
Each (In a Pack of 5)
units
NAND Surface Mount 1 2 No SC-70 5 AHC - 5.5 V -8mA 11.4 ns @ 3.3 V, 7.5 ns @ 5 V 2 V 8mA
RS Stock No. 168-9606
Mfr. Part No.HEF4071BT,652
BrandNexperia
MYR1.548
Each (In a Tube of 57)
units
OR Surface Mount 4 2 No SOIC 14 4000 - 15 V -3.6mA 115 ns @ 5 V, 35 ns @ 15 V, 50 ns @ 10 V 3 V 3.6mA
RS Stock No. 162-7397
Mfr. Part No.SN74HCT00PWR
MYR0.432
Each (On a Reel of 2000)
units
NAND Surface Mount 4 2 No TSSOP 14 HCT - 5.5 V -4mA 18 ns @ 5.5 V, 20 ns @ 4.5 V 4.5 V 4mA
RS Stock No. 145-5974
Mfr. Part No.SN74AHC1G00DCKR
MYR0.19
Each (On a Reel of 3000)
units
NAND Surface Mount 1 2 No SC-70 5 AHC - 5.5 V -8mA 11.4 ns @ 3.3 V, 7.5 ns @ 5 V 2 V 8mA
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