# 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. 709-2968 Mfr. Part No.CD4011UBEE4 BrandTexas Instruments Compare \$0.712 Each (In a Pack of 10) units NAND 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. 923-6801 Mfr. Part No.CD4011UBEE4 BrandTexas Instruments Compare \$0.712 Each (In a Tube of 25) units NAND 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. 145-0008 Mfr. Part No.CD4082BEE4 BrandTexas Instruments Compare \$0.435 Each (In a Tube of 25) units AND Through Hole 2 4 No PDIP 14 4000 - 18 V -4.2mA 120 ns @ 10 V, 250 ns @ 5 V, 90 ns @ 15 V 3 V 4.2mA New RS Stock No. 709-2371 Mfr. Part No.CD4082BEE4 BrandTexas Instruments Compare \$0.739 Each (In a Pack of 20) units AND Through Hole 2 4 No PDIP 14 4000 - 18 V -4.2mA 120 ns @ 10 V, 250 ns @ 5 V, 90 ns @ 15 V 3 V 4.2mA New RS Stock No. 527-132 Mfr. Part No.CD4002BE BrandTexas Instruments Compare \$0.641 Each (In a Tube of 25) units NOR Through Hole 2 4 No PDIP 14 4000 - 18 V -4.2mA 120 ns @ 10 V, 250 ns @ 5 V, 90 ns @ 15 V 3 V 4.2mA New RS Stock No. 805-6402 Mfr. Part No.MC74VHCT00ADR2G BrandON Semiconductor Compare \$0.397 Each (On a Tape of 50) units NAND Surface Mount 4 2 No SOIC 14 HCT TTL 5.5 V -8mA 17.5ns 3 V 8mA New RS Stock No. 170-7964 Mfr. Part No.HEF4093BT,653 BrandNexperia Compare \$0.173 Each (On a Reel of 2500) units NAND Surface Mount 4 2 Yes SO 14 HEF Schmitt Trigger 15 V -4.2mA 185 ns @ 50 pF 3 V 4.2mA New RS Stock No. 368-5884 Mfr. Part No.SN74LS00N BrandTexas Instruments Compare \$1.672 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. 355-9167 Mfr. Part No.HEF4093BT,652 BrandNexperia Compare \$0.84 Each units NAND Surface Mount 4 2 Yes SOIC 14 4000 Schmitt Trigger 15 V -4.2mA 185 ns @ 5 V, 60 ns @ 15 V, 80 ns @ 10 V 3 V 4.2mA New RS Stock No. 124-2313 Mfr. Part No.HEF4093BT,652 BrandNexperia Compare \$0.651 Each (In a Tube of 57) units NAND Surface Mount 4 2 Yes SOIC 14 4000 Schmitt Trigger 15 V -4.2mA 185 ns @ 5 V, 60 ns @ 15 V, 80 ns @ 10 V 3 V 4.2mA New RS Stock No. 145-4219 Mfr. Part No.MC74VHCT00ADR2G BrandON Semiconductor Compare \$0.166 Each (On a Reel of 2500) units NAND Surface Mount 4 2 No SOIC 14 HCT TTL 5.5 V -8mA 17.5ns 3 V 8mA New RS Stock No. 662-8405 Mfr. Part No.SN74LV08APWR BrandTexas Instruments Compare \$0.263 Each (In a Pack of 10) units AND Surface Mount 4 2 No TSSOP 14 LV - 5.5 V -12mA 12.3 ns @ 3.3 V, 17.3 ns @ 2.5 V, 7.9 ns @ 5 V 2 V 12mA New RS Stock No. 307-553 Mfr. Part No.SN74LS20N BrandTexas Instruments Compare \$1.54 Each units NAND Through Hole 2 4 No PDIP 14 LS - 5.25 V -0.4mA 15 ns @ 5 V 4.75 V 8mA New RS Stock No. 179-2141 Mfr. Part No.CD74AC32M BrandTexas Instruments Compare \$1.224 Each (In a Tube of 50) units OR Surface Mount 4 2 No SOIC 14 AC - 5.5 V -24mA 119 ns @ 1.5 V, 13.3 ns @ 3.3 V, 9.5 ns @ 5 V 1.5 V 24mA New RS Stock No. 166-2421 Mfr. Part No.74AC08SCX BrandON Semiconductor Compare \$0.323 Each (On a Reel of 2500) units AND Surface Mount 4 2 No SOIC 14 AC - 6 V -24mA 10ns 2 V 24mA New RS Stock No. 541-9673 Mfr. Part No.TC4081BP(F) BrandToshiba Compare \$1.458 Each (In a Pack of 5) units AND Through Hole 4 2 No PDIP 14 4000 - 18 V -4mA 100 ns @ 10 V, 200 ns @ 5 V, 80 ns @ 15 V 3 V 4mA New RS Stock No. 923-2335 Mfr. Part No.SN74LS08N BrandTexas Instruments Compare \$0.909 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 New RS Stock No. 162-7421 Mfr. Part No.SN74LV08APWR BrandTexas Instruments Compare \$0.149 Each (On a Reel of 2000) units AND Surface Mount 4 2 No TSSOP 14 LV - 5.5 V -12mA 12.3 ns @ 3.3 V, 17.3 ns @ 2.5 V, 7.9 ns @ 5 V 2 V 12mA New RS Stock No. 662-9812 Mfr. Part No.CD74AC32M BrandTexas Instruments Compare \$0.702 Each (In a Pack of 5) units OR Surface Mount 4 2 No SOIC 14 AC - 5.5 V -24mA 119 ns @ 1.5 V, 13.3 ns @ 3.3 V, 9.5 ns @ 5 V 1.5 V 24mA New RS Stock No. 162-6104 Mfr. Part No.74AHCT1G86DBVT BrandTexas Instruments Compare \$0.732 Each (On a Reel of 250) units XOR Surface Mount 1 2 No SOT-23 5 AHCT - 5.5 V -8mA 7.9 ns @ 5 V 4.5 V 8mA
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