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

SN74HCS21DR IC GATE AND 2CH 4-INP 14SOIC Texas Instruments	6,803 In Stock	1 : ¥2.98000 Cut Tape (CT) 2,500 : ¥0.85002 Tape & Reel (TR)	74HCS	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	AND Gate	2	4	Schmitt Trigger Input	2V ~ 6V	2 µA	-, 7.8mA	1V ~ 3V	1.5V ~ 4.2V	16ns @ 6V, 50pF	-40°C ~ 125°C	Surface Mount	14-SOIC	14-SOIC (0.154", 3.90mm Width)
CD74HCT21M96 IC GATE AND 2CH 4-INP 14SOIC Texas Instruments	7,339 In Stock	1 : ¥3.74000 Cut Tape (CT) 2,500 : ¥0.84043 Tape & Reel (TR)	74HCT	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	AND Gate	2	4	-	4.5V ~ 5.5V	2 µA	4mA, 4mA	0.8V	2V	27ns @ 4.5V, 50pF	-55°C ~ 125°C	Surface Mount	14-SOIC	14-SOIC (0.154", 3.90mm Width)
CD74HC4002M96 IC GATE NOR 2CH 4-INP 14SOIC Texas Instruments	1,907 In Stock	1 : ¥4.42000 Cut Tape (CT) 2,500 : ¥1.54375 Tape & Reel (TR)	74HC	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	NOR Gate	2	4	-	2V ~ 6V	2 µA	5.2mA, 5.2mA	0.5V ~ 1.8V	1.5V ~ 4.2V	17ns @ 6V, 50pF	-55°C ~ 125°C	Surface Mount	14-SOIC	14-SOIC (0.154", 3.90mm Width)
74HC21D IC GATE AND 2CH 4-INP 14SOIC Toshiba Semiconductor and Storage	9,903 In Stock	1 : ¥7.65000 Cut Tape (CT) 2,500 : ¥1.74440 Tape & Reel (TR)	74HC	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Last Time Buy	AND Gate	2	4	-	2V ~ 6V	1 µA	5.2mA, 5.2mA	0.5V ~ 1.8V	1.5V ~ 4.2V	17ns @ 6V, 50pF	-40°C ~ 85°C	Surface Mount	14-SOIC	14-SOIC (0.154", 3.90mm Width)

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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.