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 Gate

Logic 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 the
positive 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.

Applications

As 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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Beskrivning Pris 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-artikelnummer 162-7402
Tillv. art.nrSN74HCT32PWR
VarumärkeTexas Instruments
0,892 kr
Each (On a Reel of 2000)
Enheter
OR Surface Mount 4 2 No TSSOP 14 HCT - 5.5 V -4mA 22 ns @ 5.5 V, 24 ns @ 4.5 V 4.5 V 4mA
RS-artikelnummer 662-7967
Tillv. art.nrSN74AUP1G08DCKR
VarumärkeTexas Instruments
2,43 kr
Each (In a Pack of 10)
Enheter
AND Surface Mount 1 2 No SC-70 5 AUP - 3.6 V -4mA 6.2 ns @ 3.3 V, 7.6 ns @ 2.5 V, 11 ns @ 1.8 V, 14.2 ns @ 1.5 V, 20.9 ns @ 1.2 V 0.8 V 4mA
RS-artikelnummer 145-7371
Tillv. art.nrSN74AUP1G08DCKR
VarumärkeTexas Instruments
0,946 kr
Each (On a Reel of 3000)
Enheter
AND Surface Mount 1 2 No SC-70 5 AUP - 3.6 V -4mA 6.2 ns @ 3.3 V, 7.6 ns @ 2.5 V, 11 ns @ 1.8 V, 14.2 ns @ 1.5 V, 20.9 ns @ 1.2 V 0.8 V 4mA
RS-artikelnummer 662-8310
Tillv. art.nrSN74HCT32PWR
VarumärkeTexas Instruments
2,461 kr
Each (In a Pack of 10)
Enheter
OR Surface Mount 4 2 No TSSOP 14 HCT - 5.5 V -4mA 22 ns @ 5.5 V, 24 ns @ 4.5 V 4.5 V 4mA
RS-artikelnummer 100-0761
Tillv. art.nrSN74HC32N
VarumärkeTexas Instruments
3,66 kr
Each (In a Tube of 25)
Enheter
OR Through Hole 4 2 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-artikelnummer 528-270
Tillv. art.nrSN74AHCT1G32DBVR
VarumärkeTexas Instruments
2,494 kr
Each (In a Pack of 25)
Enheter
OR Surface Mount 1 2 No SOT-23 5 AHCT - 5.5 V -8mA 7.9 ns @ 5 V 4.5 V 8mA
RS-artikelnummer 162-7462
Tillv. art.nrSN74LVC1G10DCKR
VarumärkeTexas Instruments
0,246 kr
Each (On a Reel of 3000)
Enheter
NAND Surface Mount 1 3 No SC-70 6 LVC - 5.5 V -32mA 3.6 ns @ 5 V, 5 ns @ 3.3 V 1.65 V 32mA
RS-artikelnummer 709-1961
Tillv. art.nrCD4001BEE4
VarumärkeTexas Instruments
3,764 kr
Each (In a Pack of 20)
Enheter
NOR Through Hole 4 2 No PDIP 14 4000 - 18 V -4.2mA 90 ns @ 15 V, 120 ns @ 10 V, 250 ns @ 5 V 3 V 4.2mA
RS-artikelnummer 162-4283
Tillv. art.nrSN74AHCT1G32DBVR
VarumärkeTexas Instruments
0,892 kr
Each (On a Reel of 3000)
Enheter
OR Surface Mount 1 2 No SOT-23 5 AHCT - 5.5 V -8mA 7.9 ns @ 5 V 4.5 V 8mA
RS-artikelnummer 662-8718
Tillv. art.nrSN74LVC1G10DCKR
VarumärkeTexas Instruments
0,315 kr
Each (In a Pack of 10)
Enheter
NAND Surface Mount 1 3 No SC-70 6 LVC - 5.5 V -32mA 3.6 ns @ 5 V, 5 ns @ 3.3 V 1.65 V 32mA
RS-artikelnummer 923-6699
Tillv. art.nrCD4001BEE4
VarumärkeTexas Instruments
3,772 kr
Each (In a Tube of 25)
Enheter
NOR Through Hole 4 2 No PDIP 14 4000 - 18 V -4.2mA 90 ns @ 15 V, 120 ns @ 10 V, 250 ns @ 5 V 3 V 4.2mA
RS-artikelnummer 145-7413
Tillv. art.nrSN74LVC1G97DBVR
VarumärkeTexas Instruments
0,831 kr
Each (On a Reel of 3000)
Enheter
Multifunction Surface Mount 1 3 No SOT-23 6 LVC CMOS, TTL 5.5 V -32mA 6.1 ns @ 5 V 1.65 V 32mA
RS-artikelnummer 662-8994
Tillv. art.nrSN74LVC32ADR
VarumärkeTexas Instruments
0,578 kr
Each (In a Pack of 10)
Enheter
OR Surface Mount 4 2 No SOIC 14 LVC - 3.6 V -24mA 3.6 ns @ 3.3 V, 4.2 ns @ 2.7 V 1.65 V 24mA
RS-artikelnummer 663-2644
Tillv. art.nrSN74LV02AD
VarumärkeTexas Instruments
1,691 kr
Each (In a Pack of 10)
Enheter
NOR Surface Mount 4 2 No SOIC 14 LV - 5.5 V -12mA 7.5 ns @ 5 V, 11.4 ns @ 3.3 V, 16.1 ns @ 2.5 V 2 V 12mA
RS-artikelnummer 528-107
Tillv. art.nrSN74LVC32AD
VarumärkeTexas Instruments
0,924 kr
Each (In a Tube of 50)
Enheter
OR Surface Mount 4 2 No SOIC 14 LVC - 3.6 V -24mA 3.6 ns @ 3.3 V, 4.2 ns @ 2.7 V 1.65 V 24mA
RS-artikelnummer 333-2849
Tillv. art.nrSN74HC132N
VarumärkeTexas Instruments
3,143 kr
Each (In a Tube of 25)
Enheter
NAND Through Hole 4 2 Yes PDIP 14 HC Schmitt Trigger 6 V -5.2mA 21 ns @ 6 V, 25 ns @ 4.5 V, 120 ns @ 2 V 2 V 5.2mA
RS-artikelnummer 442-909
Tillv. art.nrSN74HC02N
VarumärkeTexas Instruments
11,58 kr
Each
Enheter
NOR 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
RS-artikelnummer 663-2509
Tillv. art.nrSN74LS32D
VarumärkeTexas Instruments
5,874 kr
Each (In a Pack of 5)
Enheter
OR Surface Mount 4 2 No SOIC 14 LS - 5.25 V -0.4mA 22 ns @ 5 V 4.75 V 8mA
RS-artikelnummer 436-3074
Tillv. art.nrSN54LS00J
VarumärkeTexas Instruments
103,073 kr
Each (In a Tube of 25)
Enheter
NAND Through Hole 4 2 No CDIP 14 LS - 5.5 V -0.4mA 15 ns @ 5 V 4.5 V 4mA
RS-artikelnummer 663-2240
Tillv. art.nrSN74HCT08PW
VarumärkeTexas Instruments
0,851 kr
Each (In a Pack of 10)
Enheter
AND Surface Mount 4 2 No TSSOP 14 HCT - 5.5 V -4mA 22 ns @ 5.5 V, 24 ns @ 4.5 V 4.5 V 4mA