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 81 - 100 of 1599 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. 663-1215
Mfr. Part No.SN74AHCT02D
HK$1.342
Each (In a Pack of 10)
units
NOR Surface Mount 4 2 No SOIC 14 AHCT - 5.5 V -8mA 7.5 ns @ 5 V 4.5 V 8mA
RS Stock No. 163-0500
Mfr. Part No.MC10EL04DG
HK$43.38
Each (In a Tube of 98)
units
AND/NAND Surface Mount 1 2 No SOIC 8 ECL ECL 5.7 V - 395ps -4.2 V 0.3µA
RS Stock No. 761-4334
Mfr. Part No.74LCX08MX
HK$4.45
Each (On a Tape of 10)
units
AND Surface Mount 4 2 No SOIC 14 LCX CMOS 3.6 V -24mA 6.2ns 2 V 24mA
RS Stock No. 816-8808
Mfr. Part No.74LVC2G08DC,125
BrandNexperia
HK$2.97
Each (In a Pack of 10)
units
AND Surface Mount 2 2 No VSSOP 8 LVC TTL 5.5 V -32mA 6.7 ns @ 50 pF 1.65 V 32mA
RS Stock No. 113-0130
Mfr. Part No.74HC32D,652
BrandNexperia
HK$3.17
Each
units
OR 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
RS Stock No. 145-7004
Mfr. Part No.CD4023BMT
HK$4.26
Each (On a Reel of 250)
units
NAND Surface Mount 3 3 No SOIC 14 4000 Differential 18 V -4.2mA 250 ns @ 50 pF 3 V 4.2mA
RS Stock No. 169-5655
Mfr. Part No.SN74AC00DR
HK$1.42
Each (On a Reel of 2500)
units
NAND Surface Mount 4 2 No SOIC 14 AC - 6 V -24mA 8 ns @ 5 V, 9.5 ns @ 3.3 V 2 V 24mA
RS Stock No. 162-6947
Mfr. Part No.CD74HC30PWR
HK$0.91
Each (On a Reel of 2000)
units
NAND Surface Mount 1 8 No TSSOP 14 HC - 6 V -5.2mA 22 ns @ 6 V, 26 ns @ 4.5 V, 130 ns @ 2 V 2 V 5.2mA
RS Stock No. 162-9388
Mfr. Part No.MC14001BDR2G
HK$0.979
Each (On a Reel of 2500)
units
NOR Surface Mount 4 2 No SOIC 14 4000 CMOS 18 V -4.2mA 350ns 0.5 V 4.2mA
RS Stock No. 124-2258
Mfr. Part No.74HC32D,652
BrandNexperia
HK$2.58
Each (In a Tube of 57)
units
OR Surface Mount 4 2 - SOIC 14 HC - 6 V -5.2mA 15 ns @ 6 V, 18 ns @ 4.5 V, 90 ns @ 2 V 2 V 5.2mA
RS Stock No. 662-7096
Mfr. Part No.CD74HC30PWR
HK$2.50
Each (In a Pack of 10)
units
NAND Surface Mount 1 8 No TSSOP 14 HC - 6 V -5.2mA 22 ns @ 6 V, 26 ns @ 4.5 V, 130 ns @ 2 V 2 V 5.2mA
RS Stock No. 145-1237
Mfr. Part No.SN74AHCT02D
HK$2.812
Each (In a Tube of 50)
units
NOR Surface Mount 4 2 No SOIC 14 AHCT - 5.5 V -8mA 7.5 ns @ 5 V 4.5 V 8mA
RS Stock No. 170-7993
Mfr. Part No.HEF4011BT,653
BrandNexperia
HK$1.02
Each (On a Reel of 2500)
units
NAND Surface Mount 4 2 - SO 14 HEF CMOS 15 V -4.2mA 110 ns @ 50 pF 3 V 4.2mA
RS Stock No. 662-8506
Mfr. Part No.SN74LV32APWR
HK$2.338
Each (In a Pack of 10)
units
OR Surface Mount 4 2 No TSSOP 14 LV - 5.5 V -12mA 7.5 ns @ 5 V, 11.4 ns @ 3.3 V, 16.2 ns @ 2.5 V 2 V 12mA
RS Stock No. 169-8532
Mfr. Part No.NC7SZ08M5X
HK$0.642
Each (On a Reel of 3000)
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. 662-9521
Mfr. Part No.CD4011UBM
HK$3.574
Each (In a Pack of 10)
units
NAND Surface Mount 4 2 No SOIC 14 4000 - 18 V -4.2mA 50 ns @ 15 V, 60 ns @ 10 V, 120 ns @ 5 V 3 V 4.2mA
RS Stock No. 809-5801
Mfr. Part No.SN74HC32DT
HK$6.338
Each (In a Pack of 10)
units
OR Surface Mount 4 2 No SOIC 14 HC Differential 6 V -4mA 125 ns @ 50 pF 2 V 5.2mA
RS Stock No. 166-1278
Mfr. Part No.74LVC132AD,112
BrandNexperia
HK$4.27
Each (In a Tube of 57)
units
NAND Surface Mount 4 2 Yes SOIC 14 LVC Schmitt Trigger 3.6 V -24mA - 1.2 V 24mA
RS Stock No. 662-6649
Mfr. Part No.74LVC1G3208DBVR
HK$2.00
Each (In a Pack of 10)
units
Multifunction Surface Mount 1 3 No SOT-23 6 LVC - 5.5 V -32mA 4 ns @ 5 V, 5.9 ns @ 3.3 V 1.65 V 32mA
RS Stock No. 103-2926
Mfr. Part No.MC14093BDG
HK$2.781
Each (In a Tube of 55)
units
NAND Surface Mount 4 2 Yes SOIC 14 4000 Schmitt Trigger 18 V -4.2mA 80 ns @ 15 V, 100 ns @ 10 V, 250 ns @ 5 V 3 V 4.2mA
Related Products
Wires and cables can be routed through the ...
Description:
Wires and cables can be routed through the sleeve and the flexible construction expands to accommodate a range of diameters of cable. Features and Benefits• Good abrasion resistance• UV light resistant• Resistant to most chemicals and solvents• Flammability rating VW-1. ...
Helawrap protective cable cover is the ideal solution ...
Description:
Helawrap protective cable cover is the ideal solution for bundling and protecting of cables in the electrical, panel building industries. Key Features• Quick and easy to protect and bundle cables• Manufactured from Polypropylene (PP)• Available in different lengths, colours and ...
Manufactured from highly elastic black chloropreneOperating temperature -30 ...
Description:
Manufactured from highly elastic black chloropreneOperating temperature -30 to 90°C (+110°C for short time periods)Flame retardant to UL94 V-OGood mechanical properties, resistance to ozone, aromatic fuels, moisture and oil.
The silicone rubber cable sleeving is the ideal ...
Description:
The silicone rubber cable sleeving is the ideal insulation for use with wire/cable harnessing applications. Features and benefits• To Class H insulation (B.S.2757 180°C continuous) and B.S. 2848 180T• High temperature range and extremely flexible• Suitable for use in mobile ...