# 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
 New RS Stock No. 663-0483 Mfr. Part No.CD74HCT132E BrandTexas Instruments Compare \$0.462 Each (In a Pack of 5) units NAND Through Hole 4 2 Yes PDIP 14 HCT Schmitt Trigger 5.5 V -4mA 33 ns @ 4.5 V 4.5 V 4mA New RS Stock No. 368-5884 Mfr. Part No.SN74LS00N BrandTexas Instruments Compare \$0.892 Each (In a Tube of 25) units NAND Through Hole 4 2 No PDIP 14 LS - 5.25 V -0.4mA 15 ns @ 5 V 4.75 V 8mA New RS Stock No. 662-9483 Mfr. Part No.CD4001UBE BrandTexas Instruments Compare \$0.646 Each (In a Pack of 10) units NOR Through Hole 4 2 No PDIP 14 4000 - 18 V -4.2mA 120 ns @ 5 V, 50 ns @ 15 V, 60 ns @ 10 V 3 V 4.2mA New RS Stock No. 813-9294 Mfr. Part No.74HC2G08DP,125 BrandNexperia Compare \$0.619 Each (In a Pack of 30) units AND Surface Mount 2 2 No TSSOP 8 HC CMOS 6 V -5.2mA 110 ns @ 15 pF 2 V 5.2mA New RS Stock No. 103-8166 Mfr. Part No.74HC02D,652 BrandNexperia Compare \$0.471 Each (In a Tube of 57) units NOR Surface Mount 4 2 No SOIC 14 HC CMOS 6 V -5.2mA 15 ns @ 6 V, 18 ns @ 4.5 V, 90 ns @ 2 V 2 V 5.2mA New RS Stock No. 166-0006 Mfr. Part No.74HC2G08DP,125 BrandNexperia Compare \$0.249 Each (On a Reel of 3000) units AND Surface Mount 2 2 No TSSOP 8 HC CMOS 6 V -5.2mA 110 ns @ 15 pF 2 V 5.2mA New RS Stock No. 527-924 Mfr. Part No.CD40107BE BrandTexas Instruments Compare \$0.68 Each (In a Tube of 50) units 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 New RS Stock No. 165-9926 Mfr. Part No.74AHC2G08DP,125 BrandNexperia Compare \$0.242 Each (On a Reel of 3000) units AND Surface Mount 2 2 No TSSOP 8 AHC CMOS 5.5 V -8mA 16 ns @ 50 pF 2 V 8mA New RS Stock No. 179-2171 Mfr. Part No.SN74HC03D BrandTexas Instruments Compare \$0.531 Each (In a Tube of 50) units NAND Surface Mount 4 2 No SOIC 14 HC - 6 V -0.005mA 105 ns @ 2 V, 23 ns @ 6 V, 25 ns @ 4.5 V 2 V 5.2mA New RS Stock No. 663-1871 Mfr. Part No.SN74HC03D BrandTexas Instruments Compare \$0.531 Each (In a Pack of 10) units NAND Surface Mount 4 2 No SOIC 14 HC - 6 V -0.005mA 105 ns @ 2 V, 23 ns @ 6 V, 25 ns @ 4.5 V 2 V 5.2mA New RS Stock No. 813-9238 Mfr. Part No.74AHC2G08DP,125 BrandNexperia Compare \$0.621 Each (On a Tape of 30) units AND Surface Mount 2 2 No TSSOP 8 AHC CMOS 5.5 V -8mA 16 ns @ 50 pF 2 V 8mA New RS Stock No. 100-0761 Mfr. Part No.SN74HC32N BrandTexas Instruments Compare \$0.40 Each (In a Tube of 25) units OR Through Hole 4 2 No PDIP 14 HC - 6 V -5.2mA 100 ns @ 2 V, 17 ns @ 6 V, 20 ns @ 4.5 V 2 V 5.2mA New RS Stock No. 527-069 Mfr. Part No.CD4070BE BrandTexas Instruments Compare \$0.664 Each (In a Tube of 25) units 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 New RS Stock No. 178-4794 Mfr. Part No.MC14081BDG BrandON Semiconductor Compare \$0.599 Each (In a Tube of 55) units AND Surface Mount 4 2 No SOIC 14 4000 - 18 V -4.2mA 100 ns @ 15 V, 130 ns @ 10 V, 300 ns @ 5 V 3 V 4.2mA New RS Stock No. 179-2129 Mfr. Part No.SN74HC03DR BrandTexas Instruments Compare \$0.419 Each (In a Tube of 50) units NAND Surface Mount 4 2 No SOIC 14 HC - 6 V -0.005mA 105 ns @ 2 V, 23 ns @ 6 V, 25 ns @ 4.5 V 2 V 5.2mA New RS Stock No. 688-1521 Mfr. Part No.MC14081BDR2G BrandON Semiconductor Compare \$0.664 Each (In a Pack of 5) units AND Surface Mount 4 2 No SOIC 14 4000 - 18 V -4.2mA 100 ns @ 15 V, 130 ns @ 10 V, 300 ns @ 5 V 3 V 4.2mA New RS Stock No. 518-9164 Mfr. Part No.MC14081BDG BrandON Semiconductor Compare \$0.82 Each units AND Surface Mount 4 2 No SOIC 14 4000 - 18 V -4.2mA 100 ns @ 15 V, 130 ns @ 10 V, 300 ns @ 5 V 3 V 4.2mA New RS Stock No. 217-5645 Mfr. Part No.SN74HC32N BrandTexas Instruments Compare \$2.87 Each units OR Through Hole 4 2 No PDIP 14 HC - 6 V -5.2mA 100 ns @ 2 V, 17 ns @ 6 V, 20 ns @ 4.5 V 2 V 5.2mA New RS Stock No. 662-8077 Mfr. Part No.SN74HC03DR BrandTexas Instruments Compare \$0.419 Each (In a Pack of 10) units NAND Surface Mount 4 2 No SOIC 14 HC - 6 V -0.005mA 105 ns @ 2 V, 23 ns @ 6 V, 25 ns @ 4.5 V 2 V 5.2mA New RS Stock No. 170-3418 Mfr. Part No.MC14081BDR2G BrandON Semiconductor Compare \$0.171 Each (On a Reel of 2500) units AND Surface Mount 4 2 No SOIC 14 4000 - 18 V -4.2mA 100 ns @ 15 V, 130 ns @ 10 V, 300 ns @ 5 V 3 V 4.2mA
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