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 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庫存編號 518-8616
製造零件編號MC14001BDG
HK$3.92
單位
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
RS庫存編號 169-8532
製造零件編號NC7SZ08M5X
HK$0.536
個 (在毎卷:3000)
單位
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庫存編號 145-0856
製造零件編號CD4023BM
HK$2.69
毎管:50 個
單位
NAND Surface Mount 3 3 No SOIC 14 4000 - 18 V -4.2mA 90 ns @ 15 V, 120 ns @ 10 V, 250 ns @ 5 V 3 V 4.2mA
RS庫存編號 166-1278
製造零件編號74LVC132AD,112
BrandNexperia
HK$2.403
毎管:57 個
單位
NAND Surface Mount 4 2 Yes SOIC 14 LVC Schmitt Trigger 3.6 V -24mA - 1.2 V 24mA
RS庫存編號 807-0704
製造零件編號MC10EL04DG
HK$46.505
/個 (每包:2個)
單位
AND/NAND Surface Mount 1 2 No SOIC 8 ECL ECL 5.7 V - 395ps -4.2 V 0.3µA
RS庫存編號 170-3419
製造零件編號MC14093BDR2G
HK$1.258
個 (在毎卷:2500)
單位
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
RS庫存編號 663-1127
製造零件編號SN74AHC08D
HK$2.41
/個 (每包:10個)
單位
AND Surface Mount 4 2 No SOIC 14 AHC - 5.5 V -8mA 7.9 ns @ 5 V, 12.3 ns @ 3.3 V 2 V 8mA
RS庫存編號 662-8714
製造零件編號SN74LVC1G08QDCKRQ1
HK$2.026
/個 (每包:10個)
單位
AND Surface Mount 1 2 No SC-70 5 LVC - 5.5 V -32mA 6 ns @ 5 V, 6.5 ns @ 3.3 V 1.65 V 32mA
RS庫存編號 162-7492
製造零件編號SN74LVC2G08DCTR
HK$1.91
個 (在毎卷:3000)
單位
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庫存編號 170-7993
製造零件編號HEF4011BT,653
BrandNexperia
HK$0.798
個 (在毎卷:2500)
單位
NAND Surface Mount 4 2 - SO 14 HEF CMOS 15 V -4.2mA 110 ns @ 50 pF 3 V 4.2mA
RS庫存編號 806-2602
製造零件編號MC100EP08DG
HK$60.39
單位
XOR/XNOR Surface Mount 1 2 No SOIC 8 EP ECL 5.5 V - 320ps -3 V 0.5µA
RS庫存編號 809-5801
製造零件編號SN74HC32DT
HK$4.733
/個 (每包:10個)
單位
OR Surface Mount 4 2 No SOIC 14 HC Differential 6 V -4mA 125 ns @ 50 pF 2 V 5.2mA
RS庫存編號 807-2545
製造零件編號SN74AC11N
HK$3.41
/個 (每包:25個)
單位
AND Through Hole 3 3 No PDIP 14 AC Differential 6 V -75mA 10 ns @ 50 pF 2 V 75mA
RS庫存編號 368-5884
製造零件編號SN74LS00N
HK$7.263
毎管:25 個
單位
NAND Through Hole 4 2 No PDIP 14 LS - 5.25 V -0.4mA 15 ns @ 5 V 4.75 V 8mA
RS庫存編號 662-9571
製造零件編號CD4023BM
HK$3.297
/個 (每包:10個)
單位
NAND Surface Mount 3 3 No SOIC 14 4000 - 18 V -4.2mA 90 ns @ 15 V, 120 ns @ 10 V, 250 ns @ 5 V 3 V 4.2mA
RS庫存編號 510-184
製造零件編號74LVC132AD,112
BrandNexperia
HK$3.403
/個 (每包:20個)
單位
NAND Surface Mount 4 2 Yes SOIC 14 LVC Schmitt Trigger 3.6 V -24mA - 1.2 V 24mA
RS庫存編號 518-9192
製造零件編號MC14093BDG
HK$3.17
單位
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
RS庫存編號 145-1237
製造零件編號SN74AHCT02D
HK$1.676
毎管:50 個
單位
NOR Surface Mount 4 2 No SOIC 14 AHCT - 5.5 V -8mA 7.5 ns @ 5 V 4.5 V 8mA
RS庫存編號 179-2116
製造零件編號CD4011BM96
HK$2.59
毎管:50 個
單位
NAND Surface Mount 4 2 No SOIC 14 4000 - 18 V -4.2mA 90 ns @ 15 V, 120 ns @ 10 V, 250 ns @ 5 V 3 V 4.2mA
RS庫存編號 166-2402
製造零件編號74LCX08MX
HK$1.511
個 (在毎卷:2500)
單位
AND Surface Mount 4 2 No SOIC 14 LCX - 3.6 V -24mA 5.5 ns @ 3.3 V, 6.2 ns @ 2.7 V 2 V 24mA