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 1734 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. 170-7993
Mfr. Part No.HEF4011BT,653
BrandNexperia
HK$0.798
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. 663-2408
Mfr. Part No.SN74LS136N
HK$6.812
Each (In a Pack of 5)
units
XOR Through Hole 4 2 No PDIP 14 LS - 5.25 V -0.1mA 30 ns @ 5 V 4.75 V 8mA
RS Stock No. 540-8134
Mfr. Part No.TC74HC32AF(F)
BrandToshiba
HK$3.40
Each (In a Pack of 5)
units
OR Surface Mount 4 2 No SOP 14 HC - 6 V -5.2mA 13 ns @ 6 V, 15 ns @ 4.5 V, 75 ns @ 2 V 2 V 5.2mA
RS Stock No. 923-2357
Mfr. Part No.SN74LS86AN
HK$3.957
Each (In a Tube of 25)
units
XOR Through Hole 4 2 No PDIP 14 LS - 5.25 V -0.4mA 30 ns @ 5 V 4.75 V 8mA
RS Stock No. 162-7492
Mfr. Part No.SN74LVC2G08DCTR
HK$1.91
Each (On a Reel of 3000)
units
AND Surface Mount 2 2 No SSOP 8 LVC - 5.5 V -32mA 3.8 ns @ 5 V, 4.7 ns @ 3.3 V 1.65 V 32mA
RS Stock No. 807-2485
Mfr. Part No.CD74HC86E
HK$4.388
Each (In a Pack of 25)
units
XOR Through Hole 4 2 No PDIP 14 HC CMOS 6 V -5.2mA 180 ns @ 50 pF 2 V 5.2mA
RS Stock No. 809-6129
Mfr. Part No.74ACT11030D
HK$19.736
Each (In a Pack of 5)
units
NAND Surface Mount 1 8 No SOIC 14 ACT Differential 5.5 V -24mA 8.7 ns @ 50 pF 4.5 V 24mA
RS Stock No. 761-4334
Mfr. Part No.74LCX08MX
HK$2.976
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. 663-1874
Mfr. Part No.SN74HC02D
HK$2.266
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
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. 663-0486
Mfr. Part No.CD74HCT132M
HK$4.37
Each (In a Pack of 5)
units
NAND Surface Mount 4 2 Yes SOIC 14 HCT Schmitt Trigger 5.5 V -4mA 33 ns @ 4.5 V 4.5 V 4mA
RS Stock No. 816-8808
Mfr. Part No.74LVC2G08DC,125
BrandNexperia
HK$2.903
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. 145-1237
Mfr. Part No.SN74AHCT02D
HK$1.676
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. 816-8820
Mfr. Part No.74LVC2G32DC,125
BrandNexperia
HK$3.16
Each (In a Pack of 10)
units
OR Surface Mount 2 2 No VSSOP 8 LVC TTL 5.5 V -32mA 6 ns @ 50 pF 1.65 V 32mA
RS Stock No. 809-5801
Mfr. Part No.SN74HC32DT
HK$4.733
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. 921-0815
Mfr. Part No.ULN2003V12T16-13
HK$1.724
Each (In a Pack of 30)
units
- Surface Mount - - - TSSOP 16 - CMOS 5 V - 140ns 3.3 V 140mA
RS Stock No. 166-3071
Mfr. Part No.NC7WZ08K8X
HK$1.03
Each (On a Reel of 3000)
units
AND Surface Mount 2 2 No US 8 - CMOS 5.5 V -32mA 5.2ns 1.65 V 32mA
RS Stock No. 662-7232
Mfr. Part No.CD74HCT132M96
HK$3.638
Each (In a Pack of 10)
units
NAND Surface Mount 4 2 Yes SOIC 14 HCT Schmitt Trigger 5.5 V -4mA 33 ns @ 4.5 V 4.5 V 4mA
RS Stock No. 103-8153
Mfr. Part No.HEF4011BT,652
BrandNexperia
HK$1.455
Each (In a Tube of 57)
units
NAND Surface Mount 4 2 No SOIC 14 4000 - 15 V -3.6mA 35 ns @ 15 V, 45 ns @ 10 V, 110 ns @ 5 V 3 V 3.6mA
RS Stock No. 178-4790
Mfr. Part No.MC14001BDG
HK$1.791
Each (In a Tube of 55)
units
NOR Surface Mount 4 2 No SOIC 14 4000 - 18 V -4.2mA 80 ns @ 15 V, 100 ns @ 10 V, 250 ns @ 5 V 3 V 4.2mA
Related Products
The SCS ESD grounding cord is a 15ft ...
Description:
The SCS ESD grounding cord is a 15ft 20AWG PVC wire. It has moulded-in male snap fastener with integral 1Mohm resistor on one end and solderless terminal on other. It comes in black nylon cover with black polyester insert and ...
Our own brand of RS Pro ESD wrist-straps ...
Description:
Our own brand of RS Pro ESD wrist-straps feature premium grade fabric band with an elastic ratio of 1:2.5” to 1:3. The outer surface of the wristband is non-conductive and the inside surface of the strap is conductive lined with ...
Our RS Pro range of hard-wearing ESD grounding ...
Description:
Our RS Pro range of hard-wearing ESD grounding straps have been designed to ensure efficient static bleeding, to ensure a reliable method of static dissipation. Predominantly used within the electronics industry, but still suited to enthusiasts working at a bench. ...
The RS Pro anti-static wrist strap is a ...
Description:
The RS Pro anti-static wrist strap is a premium metal wrist band (stainless steel) that is adjustable and features a coiled cord. Its metal interior is great for grounding. This wrist strap will fit all wrists as its circumference adjusts ...