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. 166-2402
Mfr. Part No.74LCX08MX
HK$1.754
Each (On a Reel of 2500)
units
AND Surface Mount 4 2 No SOIC 14 LCX - 3.6 V -24mA 5.5 ns @ 3.3 V, 6.2 ns @ 2.7 V 2 V 24mA
RS Stock No. 145-1237
Mfr. Part No.SN74AHCT02D
HK$2.675
Each (In a Tube of 50)
units
NOR Surface Mount 4 2 No SOIC 14 AHCT - 5.5 V -8mA 7.5 ns @ 5 V 4.5 V 8mA
RS Stock No. 146-0953
Mfr. Part No.ULN2003V12T16-13
HK$1.303
Each (On a Reel of 2500)
units
- Surface Mount - - - TSSOP 16 - CMOS 5 V - 140ns 3.3 V 140mA
RS Stock No. 170-7993
Mfr. Part No.HEF4011BT,653
BrandNexperia
HK$1.00
Each (On a Reel of 2500)
units
NAND Surface Mount 4 2 - SO 14 HEF CMOS 15 V -4.2mA 110 ns @ 50 pF 3 V 4.2mA
RS Stock No. 807-2545
Mfr. Part No.SN74AC11N
HK$4.116
Each (In a Pack of 25)
units
AND Through Hole 3 3 No PDIP 14 AC Differential 6 V -75mA 10 ns @ 50 pF 2 V 75mA
RS Stock No. 816-8820
Mfr. Part No.74LVC2G32DC,125
BrandNexperia
HK$3.16
Each (In a Pack of 10)
units
OR Surface Mount 2 2 No VSSOP 8 LVC TTL 5.5 V -32mA 6 ns @ 50 pF 1.65 V 32mA
RS Stock No. 163-0474
Mfr. Part No.MC100EP08DG
HK$55.938
Each (In a Tube of 98)
units
XOR/XNOR Surface Mount 1 2 No SOIC 8 EP ECL 5.5 V - 320ps -3 V 0.5µA
RS Stock No. 761-4568
Mfr. Part No.NC7WZ08K8X
HK$2.881
Each (On a Tape of 25)
units
AND Surface Mount 2 2 No US 8 - CMOS 5.5 V -32mA 5.2ns 1.65 V 32mA
RS Stock No. 145-0856
Mfr. Part No.CD4023BM
HK$3.401
Each (In a Tube of 50)
units
NAND Surface Mount 3 3 No SOIC 14 4000 - 18 V -4.2mA 90 ns @ 15 V, 120 ns @ 10 V, 250 ns @ 5 V 3 V 4.2mA
RS Stock No. 761-4334
Mfr. Part No.74LCX08MX
HK$4.361
Each (On a Tape of 10)
units
AND Surface Mount 4 2 No SOIC 14 LCX CMOS 3.6 V -24mA 6.2ns 2 V 24mA
RS Stock No. 759-6696
Mfr. Part No.74AC86SC
HK$4.191
Each (In a Pack of 55)
units
XOR Surface Mount 4 2 No SOIC 14 AC - 6 V -75mA 12.5ns 2 V 75mA
RS Stock No. 539-9282
Mfr. Part No.TC74HC08AP(F)
BrandToshiba
HK$3.75
Each (In a Pack of 5)
units
AND Through Hole 4 2 No PDIP 14 HC - 6 V -5.2mA 13 ns @ 6 V, 15 ns @ 4.5 V, 75 ns @ 2 V 2 V 5.2mA
RS Stock No. 923-2335
Mfr. Part No.SN74LS08N
HK$4.565
Each (In a Tube of 25)
units
AND Through Hole 4 2 No PDIP 14 LS - 5.25 V -0.4mA 20 ns @ 5 V 4.75 V 8mA
RS Stock No. 166-3070
Mfr. Part No.NC7SZ58P6X
HK$0.596
Each (On a Reel of 3000)
units
Multifunction Surface Mount 1 2 No SC-70 6 - CMOS 5.5 V -32mA 6.5ns 1.65 V 32mA
RS Stock No. 802-1705
Mfr. Part No.NL7SZ57DFT2G
HK$0.88
Each (On a Tape of 100)
units
Multifunction Surface Mount 1 3 - SC-88 6 NL Schmitt Trigger 5.5 V -32mA 14.4ns 1.65 V 32mA
RS Stock No. 162-6936
Mfr. Part No.CD74ACT86M96
HK$1.774
Each (On a Reel of 2500)
units
XOR Surface Mount 4 2 No SOIC 14 ACT - 5.5 V -24mA 14.6 ns @ 5 V 4.5 V 24mA
RS Stock No. 539-9349
Mfr. Part No.TC74HC21AP(F)
BrandToshiba
HK$3.40
Each (In a Pack of 5)
units
AND Through Hole 2 4 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 Stock No. 162-7325
Mfr. Part No.SN74AHCT86PWR
HK$0.78
Each (On a Reel of 2000)
units
XOR Surface Mount 4 2 No TSSOP 14 AHCT - 5.5 V -8mA 8.8 ns @ 5 V 4.5 V 8mA
RS Stock No. 169-7484
Mfr. Part No.74LV86AT14-13
HK$0.864
Each (On a Reel of 2500)
units
XOR Surface Mount 4 2 Yes TSSOP 14 LV Schmitt Trigger 5.5 V -12mA 11 ns @ 50 pF 2 V 12mA
RS Stock No. 813-9285
Mfr. Part No.74HC1G08GV,125
BrandNexperia
HK$0.771
Each (On a Tape of 100)
units
AND Surface Mount 1 2 No SC-74A 5 HC CMOS 6 V -2.6mA 135 ns @ 50 pF 2 V 2.6mA
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