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 178-7128
製造零件編號74LVC1G08GW,125
BrandNexperia
HK$0.282
個 (在毎卷:3000)
單位
AND Surface Mount 1 2 No TSSOP 5 LVC - 5.5 V -32mA - 1.65 V 32mA
RS庫存編號 775-7784
製造零件編號74HCT1G32GW,125
BrandNexperia
HK$1.416
個 (以毎袋:30)
單位
OR Surface Mount 1 2 No TSSOP 5 HCT TTL 5.5 V -2mA 27ns 4.5 V 2mA
RS庫存編號 146-0843
製造零件編號74HCT1G32GW,125
BrandNexperia
HK$0.347
個 (在毎卷:3000)
單位
OR Surface Mount 1 2 No TSSOP 5 HCT TTL 5.5 V -2mA 27ns 4.5 V 2mA
RS庫存編號 510-201
製造零件編號74LVC1G08GW,125
BrandNexperia
HK$0.937
/個 (每包:50個)
單位
AND Surface Mount 1 2 No TSSOP 5 LVC - 5.5 V -32mA - 1.65 V 32mA
RS庫存編號 816-8839
製造零件編號74LVC2G32DP,125
BrandNexperia
HK$1.904
/個 (每包:30個)
單位
OR Surface Mount 2 2 No TSSOP 8 LVC TTL 5.5 V -32mA 6 ns @ 50 pF 1.65 V 32mA
RS庫存編號 124-2273
製造零件編號74LVC2G32DP,125
BrandNexperia
HK$1.35
個 (在毎卷:3000)
單位
OR Surface Mount 2 2 - TSSOP 8 LVC TTL 5.5 V -32mA 6 ns @ 50 pF 1.65 V 32mA
RS庫存編號 166-1437
製造零件編號74AHC1G08GW,125
BrandNexperia
HK$0.291
個 (在毎卷:3000)
單位
AND Surface Mount 1 2 No TSSOP 5 AHC - 5.5 V -8mA 7.9 ns @ 4.5 V to 5.5 V, 12.3 ns @ 3 V to 3.6 V 2 V 8mA
RS庫存編號 510-087
製造零件編號74AHC1G08GW,125
BrandNexperia
HK$1.039
/個 (每包:50個)
單位
AND Surface Mount 1 2 No TSSOP 5 AHC - 5.5 V -8mA 7.9 ns @ 4.5 V → 5.5 V, 12.3 ns @ 3 V → 3.6 V 2 V 8mA
RS庫存編號 166-1444
製造零件編號74LVC1G32GW,125
BrandNexperia
HK$0.274
個 (在毎卷:3000)
單位
OR Surface Mount 1 2 No TSSOP 5 LVC - 5.5 V -32mA - 1.65 V 32mA
RS庫存編號 510-403
製造零件編號74LVC1G32GW,125
BrandNexperia
HK$1.24
/個 (每包:50個)
單位
OR Surface Mount 1 2 No TSSOP 5 LVC - 5.5 V -32mA - 1.65 V 32mA
RS庫存編號 103-8153
製造零件編號HEF4011BT,652
BrandNexperia
HK$1.455
毎管:57 個
單位
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 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 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 124-2258
製造零件編號74HC32D,652
BrandNexperia
HK$1.60
毎管:57 個
單位
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庫存編號 816-8808
製造零件編號74LVC2G08DC,125
BrandNexperia
HK$2.903
/個 (每包:10個)
單位
AND Surface Mount 2 2 No VSSOP 8 LVC TTL 5.5 V -32mA 6.7 ns @ 50 pF 1.65 V 32mA
RS庫存編號 787-369
製造零件編號HEF4011BT,652
BrandNexperia
HK$3.378
/個 (每包:5個)
單位
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 816-8820
製造零件編號74LVC2G32DC,125
BrandNexperia
HK$3.16
/個 (每包:10個)
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 165-8729
製造零件編號74LVC2G08DC,125
BrandNexperia
HK$1.792
個 (在毎卷:3000)
單位
AND Surface Mount 2 2 No VSSOP 8 LVC TTL 5.5 V -32mA 6.7 ns @ 50 pF 1.65 V 32mA