Gates and Inverters

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Mfr Part #	Quantity Available	Price	Series	Package	Product Status	Logic Type	Number of Circuits	Number of Inputs	Features	Voltage - Supply	Current - Quiescent (Max)	Current - Output High, Low	Input Logic Level - Low	Input Logic Level - High	Max Propagation Delay @ V, Max CL	Operating Temperature	Mounting Type	Supplier Device Package	Package / Case
SN74HC32N IC GATE OR 4CH 2-INP 14DIP Texas Instruments	2,457 In Stock 220,221 Marketplace	1,222 : £0.19950 Bulk 1 : £0.44000 Tube	74HC	Bulk Tube	Active	OR Gate	4	2	-	2V ~ 6V	2 µA	5.2mA, 5.2mA	0.5V ~ 1.8V	1.5V ~ 4.2V	17ns @ 6V, 50pF	-40°C ~ 85°C	Through Hole	14-PDIP	14-DIP (0.300", 7.62mm)
SN74HC27N IC GATE NOR 3CH 3-INP 14DIP Texas Instruments	3,049 In Stock	1 : £0.44000 Tube	74HC	Tube	Active	NOR Gate	3	3	-	2V ~ 6V	2 µA	5.2mA, 5.2mA	0.5V ~ 1.8V	1.5V ~ 4.2V	15ns @ 6V, 50pF	-40°C ~ 85°C	Through Hole	14-PDIP	14-DIP (0.300", 7.62mm)
SN74HC02N IC GATE NOR 4CH 2-INP 14DIP Texas Instruments	2,087 In Stock 22,957 Marketplace	1,154 : £0.20748 Bulk 1 : £0.46000 Tube	74HC	Bulk Tube	Active	NOR Gate	4	2	-	2V ~ 6V	2 µA	5.2mA, 5.2mA	0.5V ~ 1.8V	1.5V ~ 4.2V	15ns @ 6V, 50pF	-40°C ~ 85°C	Through Hole	14-PDIP	14-DIP (0.300", 7.62mm)
CD74HC08E IC GATE AND 4CH 2-INP 14DIP Texas Instruments	3,058 In Stock 19,011 Marketplace	949 : £0.25536 Bulk 1 : £0.55000 Tube	74HC	Bulk Tube	Active	AND Gate	4	2	-	2V ~ 6V	2 µA	5.2mA, 5.2mA	0.5V ~ 1.8V	1.5V ~ 4.2V	15ns @ 6V, 50pF	-55°C ~ 125°C	Through Hole	14-PDIP	14-DIP (0.300", 7.62mm)

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Products in the logic gate and inverter family perform elementary logical operations on individual logic signals such as AND, NOT, OR, etc. Unlike flip-flops they do not have a capacity to store information and respond immediately to the signals presented to their inputs. Though long supplanted by implementations in integrated circuit form for realizing complex functions, discrete gates remain available for use in circumstances where only very simple logical functions are needed.