# 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. 796-8287 Mfr. Part No.SNJ54HC00J BrandTexas Instruments Compare \$14.68 Each (In a Pack of 2) units NAND Through Hole 4 2 No CDIP 14 HC CMOS 6 V -5.2mA 20 ns @ 6 V 2 V 5.2mA New RS Stock No. 806-6216 Mfr. Part No.NC7ST00P5X BrandON Semiconductor Compare \$0.161 Each (In a Pack of 100) units NAND Surface Mount 1 2 No SC-70 5 TinyLogic HST TTL 5.5 V -2mA 31 ns @ 50 pF 4.5 V 2mA New RS Stock No. 796-7941 Mfr. Part No.CD4072BE BrandTexas Instruments Compare \$0.735 Each (In a Pack of 25) units OR Through Hole 2 4 No PDIP 14 4000 CMOS 18 V -4.2mA 250 ns @ 50 pF 3 V 4.2mA New RS Stock No. 662-8257 Mfr. Part No.SN74HCT08DR BrandTexas Instruments Compare \$0.419 Each (In a Pack of 10) units AND Surface Mount 4 2 No SOIC 14 HCT - 5.5 V -4mA 22 ns @ 5.5 V, 24 ns @ 4.5 V 4.5 V 4mA New RS Stock No. 483-6386 Mfr. Part No.74HC11D,652 BrandNexperia Compare \$0.635 Each (In a Pack of 20) units AND Surface Mount 3 3 No SOIC 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. 806-1378 Mfr. Part No.MC74HC03ADR2G BrandON Semiconductor Compare \$0.472 Each (On a Tape of 50) units NAND Surface Mount 1 2 No SOIC 14 HC CMOS 6 V - 180ns 2 V 5.2mA New RS Stock No. 166-2773 Mfr. Part No.NC7SZ02P5X BrandON Semiconductor Compare \$0.086 Each (On a Reel of 3000) units NOR Surface Mount 1 2 No SC-70 5 TinyLogic UHS - 5.5 V -32mA 4.3 ns @ 5 V, 5 ns @ 3.3 V 1.65 V 32mA New RS Stock No. 166-1966 Mfr. Part No.NC7SZ86M5X BrandON Semiconductor Compare \$0.128 Each (On a Reel of 3000) units XOR Surface Mount 1 2 No SOT-23 5 TinyLogic UHS - 5.5 V -32mA 5.4 ns @ 5 V, 6.2 ns @ 3.3 V 1.65 V 32mA New RS Stock No. 806-1135 Mfr. Part No.NC7WP08K8X BrandON Semiconductor Compare \$0.749 Each (In a Pack of 20) units AND Surface Mount 2 2 No US 8 TinyLogic ULP CMOS 3.6 V -2.6mA 46.3ns 0.9 V 2.6mA New RS Stock No. 809-6175 Mfr. Part No.CD4019BMT BrandTexas Instruments Compare \$1.08 Each (In a Pack of 10) units AND/OR Surface Mount 4 2 No SOIC 16 4000 Differential 18 V -4.2mA 300 ns @ 50 pF 3 V 4.2mA New RS Stock No. 163-2473 Mfr. Part No.MC74HC02ADTR2G BrandON Semiconductor Compare \$0.139 Each (On a Reel of 2500) units NOR Surface Mount 4 2 No TSSOP 14 HC - 6 V -5.2mA 13 ns @ 6 V, 15 ns @ 4.5 V, 30 ns @ 3 V, 75 ns @ 2 V 2 V 5.2mA New RS Stock No. 662-9988 Mfr. Part No.CD74HC00E BrandTexas Instruments Compare \$0.888 Each (In a Pack of 5) units NAND Through Hole 4 2 No PDIP 14 HC - 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. 443-025 Mfr. Part No.SN74HC132N BrandTexas Instruments Compare \$0.73 Each units NAND Through Hole 4 2 Yes PDIP 14 HC Schmitt Trigger 6 V -5.2mA 120 ns @ 2 V, 21 ns @ 6 V, 25 ns @ 4.5 V 2 V 5.2mA New RS Stock No. 761-3713 Mfr. Part No.NC7SZ02P5X BrandON Semiconductor Compare \$0.356 Each (In a Pack of 50) units NOR Surface Mount 1 2 No SC-70 5 - CMOS 5.5 V -32mA 5.2ns 1.65 V 32mA New RS Stock No. 662-6863 Mfr. Part No.CD4078BM96 BrandTexas Instruments Compare \$0.529 Each (In a Pack of 10) units OR/NOR Surface Mount 1 8 No SOIC 14 4000 - 18 V -4.2mA 110 ns @ 15 V, 150 ns @ 10 V, 300 ns @ 5 V 3 V 4.2mA New RS Stock No. 662-6970 Mfr. Part No.CD74HC02M96 BrandTexas Instruments Compare \$0.453 Each (In a Pack of 10) units NOR Surface Mount 4 2 No SOIC 14 HC - 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. 145-6879 Mfr. Part No.SN74AS1000AD BrandTexas Instruments Compare \$4.07 Each (In a Tube of 50) units NAND Surface Mount 4 2 No SOIC 14 AS - 5.5 V -48mA 4 ns @ 4.5 V → 5.5 V 4.5 V 48mA New RS Stock No. 166-2414 Mfr. Part No.NC7SZ57P6X BrandON Semiconductor Compare \$0.108 Each (On a Reel of 3000) units Multifunction Surface Mount 2 2 Yes SC-70 6 TinyLogic UHS Schmitt Trigger 5.5 V -32mA 6.5ns 1.65 V 32mA New RS Stock No. 145-0152 Mfr. Part No.CD74HC4002E BrandTexas Instruments Compare \$0.711 Each (In a Tube of 25) units NOR Through Hole 2 4 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. 806-1640 Mfr. Part No.MC74HC86ADR2G BrandON Semiconductor Compare \$0.477 Each (In a Pack of 50) units XOR Surface Mount 4 2 No SOIC 14 HC CMOS 6 V 5.2mA 150ns 2 V 5.2mA
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