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74HC74A pdf datasheet

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  • 标      签: 74HC7

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MM54HC74A/MM74HC74ADual D Flip-Flop with Preset and ClearGeneral DescripTIonThe MM54HC74A/MM74HC74A uTIlizes advanced silicongateCMOS technology to achieve operaTIng speeds similarto the equivalent LS-TTL part. It possesses the high noiseimmunity and low power consumpTIon of standard CMOSintegrated circuits, along with the ability to drive 10 LS-TTLloads.This flip-flop has independent data, preset, clear, and clockinputs and Q and Q outputs. The logic level present at thedata input is transferred to the output during the positive-goingtransition of the clock pulse. Preset and clear are independentof the clock and accomplished by a low level at theappropriate input.

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