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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Description Prix 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
N° de stock RS 663-2495
Référence fabricantSN74LS26N
0,812 €
Each (In a Pack of 5)
Unité
NAND Through Hole 4 2 No PDIP 14 LS - 5.25 V -1mA 32 ns @ 5 V 4.75 V 8mA
N° de stock RS 145-0895
Référence fabricantSN74LS26N
0,677 €
Each (In a Tube of 25)
Unité
NAND Through Hole 4 2 No PDIP 14 LS - 5.25 V -1mA 32 ns @ 5 V 4.75 V 8mA
N° de stock RS 809-6071
Référence fabricantSN74LVC2G86DCUT
0,286 €
Each (On a Tape of 10)
Unité
OR Surface Mount 2 2 No US 8 LVC Differential 5.5 V -4mA 4.2 ns @ 50 pF 1.65 V 32mA
N° de stock RS 368-5884
Référence fabricantSN74LS00N
0,455 €
Each (In a Tube of 25)
Unité
NAND Through Hole 4 2 No PDIP 14 LS - 5.25 V -0.4mA 15 ns @ 5 V 4.75 V 8mA
N° de stock RS 168-4296
Référence fabricantSN74LVC2G86DCUT
0,278 €
Each (On a Reel of 250)
Unité
OR Surface Mount 2 2 No US 8 LVC Differential 5.5 V -4mA 4.2 ns @ 50 pF 1.65 V 32mA
N° de stock RS 662-8976
Référence fabricantSN74LVC2G86DCUR
0,422 €
Each (In a Pack of 5)
Unité
XOR Surface Mount 2 2 No VSSOP 8 LVC - 5.5 V -32mA 3.6 ns @ 5 V, 4.7 ns @ 3.3 V 1.65 V 32mA
N° de stock RS 922-2868
Référence fabricantSN74LVC2G86DCUR
0,32 €
Each (On a Reel of 3000)
Unité
XOR Surface Mount 2 2 No VSSOP 8 LVC - 5.5 V -32mA 3.6 ns @ 5 V, 4.7 ns @ 3.3 V 1.65 V 32mA
N° de stock RS 796-7941
Référence fabricantCD4072BE
0,399 €
Each (In a Pack of 25)
Unité
OR Through Hole 2 4 No PDIP 14 4000 CMOS 18 V -4.2mA 250 ns @ 50 pF 3 V 4.2mA
N° de stock RS 145-0039
Référence fabricantCD4072BE
0,332 €
Each (In a Tube of 25)
Unité
OR Through Hole 2 4 No PDIP 14 4000 CMOS 18 V -4.2mA 250 ns @ 50 pF 3 V 4.2mA
N° de stock RS 923-2357
Référence fabricantSN74LS86AN
0,433 €
Each (In a Tube of 25)
Unité
XOR Through Hole 4 2 No PDIP 14 LS - 5.25 V -0.4mA 30 ns @ 5 V 4.75 V 8mA
N° de stock RS 179-2125
Référence fabricantSN74AC08DR
0,283 €
Each (In a Tube of 50)
Unité
AND Surface Mount 4 2 No SOIC 14 AC - 6 V -24mA 7.5 ns @ 5 V, 9.5 ns @ 3.3 V 2 V 24mA
N° de stock RS 100-0761
Référence fabricantSN74HC32N
0,334 €
Each (In a Tube of 25)
Unité
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
N° de stock RS 923-6699
Référence fabricantCD4001BE
0,362 €
Each (In a Tube of 25)
Unité
NOR Through Hole 4 2 No PDIP 14 4000 - 18 V -4.2mA 120 ns @ 10 V, 250 ns @ 5 V, 90 ns @ 15 V 3 V 4.2mA
N° de stock RS 527-079
Référence fabricantCD4071BE
0,362 €
Each (In a Tube of 25)
Unité
OR Through Hole 4 2 No PDIP 14 4000 - 18 V -4.2mA 120 ns @ 10 V, 250 ns @ 5 V, 90 ns @ 15 V 3 V 4.2mA
N° de stock RS 217-5645
Référence fabricantSN74HC32N
0,46 €
Each
Unité
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
N° de stock RS 709-1961
Référence fabricantCD4001BE
0,363 €
Each (In a Pack of 20)
Unité
NOR Through Hole 4 2 No PDIP 14 4000 - 18 V -4.2mA 120 ns @ 10 V, 250 ns @ 5 V, 90 ns @ 15 V 3 V 4.2mA
N° de stock RS 662-7550
Référence fabricantSN74AC08DR
0,347 €
Each (In a Pack of 10)
Unité
AND Surface Mount 4 2 No SOIC 14 AC - 6 V -24mA 7.5 ns @ 5 V, 9.5 ns @ 3.3 V 2 V 24mA
N° de stock RS 526-537
Référence fabricantCD4011BE
0,362 €
Each (In a Tube of 25)
Unité
NAND Through Hole 4 2 No PDIP 14 4000 - 18 V -4.2mA 120 ns @ 10 V, 250 ns @ 5 V, 90 ns @ 15 V 3 V 4.2mA
N° de stock RS 368-5812
Référence fabricantSN7432N
1,902 €
Each (In a Tube of 25)
Unité
OR Through Hole 4 2 No PDIP 14 74 - 5.25 V -0.8mA 22 ns @ 5 V 4.75 V 16mA
N° de stock RS 368-5569
Référence fabricantSN7400N
1,178 €
Each (In a Tube of 25)
Unité
NAND Through Hole 4 2 No PDIP 14 74 - 5.25 V -0.4mA 22 ns @ 5 V 4.75 V 16mA