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 145-1227
製造零件編號CD74HCT132M
HK$2.971
毎管:50 個
單位
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庫存編號 527-069
製造零件編號CD4070BE
HK$2.968
毎管:25 個
單位
XOR Through Hole 4 2 No PDIP 14 4000 - 18 V -4.2mA 100 ns @ 15 V, 130 ns @ 10 V, 280 ns @ 5 V 3 V 4.2mA
RS庫存編號 662-8506
製造零件編號SN74LV32APWR
HK$2.076
/個 (每包:10個)
單位
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 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 145-0660
製造零件編號CD4011UBM
HK$2.585
毎管:50 個
單位
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庫存編號 540-0512
製造零件編號TC7S32F(F)
BrandToshiba
HK$3.424
/個 (每包:5個)
單位
OR Surface Mount 1 2 No SSOP 5 HC - 6 V -2.6mA 17 ns @ 6 V, 20 ns @ 4.5 V, 100 ns @ 2 V 2 V 2.6mA
RS庫存編號 662-7096
製造零件編號CD74HC30PWR
HK$2.174
/個 (每包:10個)
單位
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庫存編號 103-2926
製造零件編號MC14093BDG
HK$2.535
毎管:55 個
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 113-0130
製造零件編號74HC32D,652
BrandNexperia
HK$10.86
單位
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庫存編號 165-8730
製造零件編號74LVC2G32DC,125
BrandNexperia
HK$2.003
個 (在毎卷:3000)
單位
OR Surface Mount 2 2 No VSSOP 8 LVC TTL 5.5 V -32mA 6 ns @ 50 pF 1.65 V 32mA
RS庫存編號 670-9790
製造零件編號NC7SZ08M5X
HK$1.609
/個 (每包:10個)
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 809-6179
製造零件編號CD4023BMT
HK$5.428
/個 (每包:10個)
單位
NAND Surface Mount 3 3 No SOIC 14 4000 Differential 18 V -4.2mA 250 ns @ 50 pF 3 V 4.2mA
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 145-0179
製造零件編號SN74LS136N
HK$5.219
毎管:25 個
單位
XOR Through Hole 4 2 No PDIP 14 LS - 5.25 V -0.1mA 30 ns @ 5 V 4.75 V 8mA
RS庫存編號 162-6947
製造零件編號CD74HC30PWR
HK$0.91
個 (在毎卷:2000)
單位
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庫存編號 163-0572
製造零件編號MC74AC11DR2G
HK$1.18
個 (在毎卷:2500)
單位
AND Surface Mount 3 3 No SOIC 14 AC TTL 6 V -24mA 10 ns @ 50 pF 2 V 24mA
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 145-0472
製造零件編號SN74LS30NE4
HK$4.788
毎管:25 個
單位
NAND Through Hole 1 8 No PDIP 14 LS - 5.25 V -0.4mA 20 ns @ 5 V 4.75 V 8mA