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

...
Read more Read less

Filters

Viewing 1 - 20 of 490 products
Results per page
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
RS stock no. 145-4039
Mfr. Part No.MC74VHC1G09DTT1G
R 0.741
Each (On a Reel of 3000)
units
AND Surface Mount 1 2 No TSOP 5 VHC CMOS 5.5 V - 16.5 ns @ 50 pF 2 V 8mA
RS stock no. 806-3995
Mfr. Part No.MC74VHC1G09DTT1G
R 1.281
Each (On a Tape of 100)
units
AND Surface Mount 1 2 No TSOP 5 VHC CMOS 5.5 V - 16.5 ns @ 50 pF 2 V 8mA
RS stock no. 166-2802
Mfr. Part No.NC7WP08K8X
R 2.27
Each (On a Reel of 3000)
units
AND Surface Mount 2 2 No US 8 TinyLogic ULP CMOS 3.6 V -2.6mA 46.3ns 0.9 V 2.6mA
RS stock no. 806-1135
Mfr. Part No.NC7WP08K8X
R 2.306
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
RS stock no. 806-3150
Mfr. Part No.MC14025BDG
R 5.431
Each (In a Pack of 55)
units
NOR Surface Mount 3 3 No SOIC 14 4000 - 18 V -10mA 300ns 3 V 10mA
RS stock no. 802-1207
Mfr. Part No.74LCX11MTC
R 4.757
Each (In a Tube of 94)
units
AND Surface Mount 3 3 No TSSOP 14 LCX - 3.6 V -24mA 7.2 ns @ 30 pF 2 V 24mA
RS stock no. 166-2760
Mfr. Part No.74ACT32SCX
R 2.893
Each (On a Reel of 2500)
units
OR Surface Mount 4 2 No SOIC 14 ACT - 5.5 V -24mA 9 ns @ 5 V 4.5 V 24mA
RS stock no. 761-4325
Mfr. Part No.74ACT32SCX
R 6.698
Each (On a Tape of 25)
units
OR Surface Mount 4 2 No SOIC 14 ACT TTL 6 V -24mA 10ns 2 V 24mA
RS stock no. 806-2914
Mfr. Part No.MM74HC00MTC
R 5.226
Each (In a Tube of 94)
units
NAND Surface Mount 4 2 No TSSOP 14 HC CMOS 6 V 5.2mA 134ns 2 V 5.2mA
RS stock no. 163-0586
Mfr. Part No.MC74HC00ADR2G
R 1.292
Each (On a Reel of 2500)
units
NAND Surface Mount 4 2 No SOIC 14 LS CMOS 6 V 5.2mA 110 ns @ 50 pF 2 V 5.2mA
RS stock no. 805-1570
Mfr. Part No.M74VHC1GT86DFT2G
R 0.484
Each (In a Pack of 100)
units
XOR Surface Mount 1 2 No SC-88A 5 VHC TTL 5.5 V -8mA 19.5 ns @ 50 pF 3 V 8mA
RS stock no. 166-2410
Mfr. Part No.NC7SZ00M5X
R 1.112
Each (On a Reel of 3000)
units
NAND Surface Mount 1 2 No SOT-23 5 TinyLogic UHS CMOS 5.5 V -32mA 5.2ns 1.65 V 32mA
RS stock no. 806-3223
Mfr. Part No.MC14073BDG
R 5.376
Each (In a Pack of 55)
units
AND Surface Mount 3 3 No SOIC 14 4000 - 18 V -10mA 300 ns @ 50 pF 3 V 10mA
RS stock no. 184-4271
Mfr. Part No.MC74HC00ADG
R 1.987
Each (In a Tube of 55)
units
NAND Surface Mount 4 2 - SOIC 14 74HC CMOS 6 V 5.2mA 110 ns @ 50 pF 2 V 5.2mA
RS stock no. 805-1548
Mfr. Part No.M74VHC1GT14DFT2G
R 0.382
Each (On a Tape of 100)
units
Inverter Surface Mount 1 - - SC-70 5 VHC LS-TTL 5.5 V -8mA 20.5 ns@ 50 pF 3 V 8mA
RS stock no. 670-9790
Mfr. Part No.NC7SZ08M5X
R 4.136
Each (In a Pack of 10)
units
AND Surface Mount 1 2 No SOT-23 5 TinyLogic UHS - 5.5 V -32mA 4.5 ns @ 5 V, 5.2 ns @ 3.3 V 1.65 V 32mA
RS stock no. 739-0127
Mfr. Part No.NC7SZ00M5X
R 4.523
Each (In a Pack of 10)
units
NAND Surface Mount 1 2 No SOT-23 5 TinyLogic UHS CMOS 5.5 V -32mA 5.2ns 1.65 V 32mA
RS stock no. 761-4561
Mfr. Part No.NC7SZ86M5X
R 5.114
Each (In a Pack of 25)
units
OR Surface Mount 1 2 No SOT-23 5 - CMOS 5.5 V -32mA 6.5ns 1.65 V 32mA
RS stock no. 145-3322
Mfr. Part No.M74VHC1GT86DFT2G
R 0.693
Each (On a Reel of 3000)
units
XOR Surface Mount 1 2 No SC-88A 5 VHC TTL 5.5 V -8mA 19.5 ns @ 50 pF 3 V 8mA
RS stock no. 806-3958
Mfr. Part No.MC74VHC1G03DFT1G
R 0.462
Each (On a Tape of 100)
units
NOR Surface Mount 1 2 No SC-88A 5 VHC CMOS 5.5 V - 15.5 ns @ 50 pF 2 V 8mA