(China (Mainland))
Product Summary
The SN74HC21DR is a dual 4-input Positive-AND gate. The SN74HC21DR contains two independent 4-input AND gates. They perform the Boolean function Y= A×B×C×D or Y =A+B+C+D in positive logic.
Parametrics
SN74HC21DR absolute maximum ratings: (1)Supply voltage range, VCC: -0.5 V to 7 V; (2)Input clamp current, IIK (VI＜ 0 or VI＞VCC): ±20 mA; (3)Output clamp current, IOK (VO＜ 0 or VO＞VCC): ±20 mA; (4)Continuous output current, IO (VO = 0 to VCC): ±25 mA; (5)Continuous current through VCC or GND: ±50 mA; (6)Package thermal impedance, θJA: D package: 86℃/W; (7)N package: 80℃/W; (8)NS package: 76℃/W; (9)PW package: 113℃/W; (10)Storage temperature range, Tstg: 65℃ to 150℃.
Features
SN74HC21DR features: (1)Wide Operating Voltage Range of 2 V to 6 V; (2)Outputs Can Drive Up To 10 LSTTL Loads; (3)Low Power Consumption, 20-μA Max ICC; (4)Typical tpd = 11 ns; (5)±4-mA Output Drive at 5 V; (6)Low Input Current of 1 μA Max.
Diagrams
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 SN74HC21DR |
Texas Instruments |
Gates (AND / NAND / OR / NOR) Dual 4-input Positive-AND Gates |
Data Sheet |
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SN74HC21DRE4 |
Texas Instruments |
Gates (AND / NAND / OR / NOR) Dual 4-input Positive-AND Gates |
Data Sheet |
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SN74HC21DRG4 |
Texas Instruments |
Gates (AND / NAND / OR / NOR) Dual 4-input Positive-AND Gates |
Data Sheet |
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