M74HC590 查看數據表（PDF） - STMicroelectronics

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M74HC590

8 BINARY COUNTER REGISTER WITH 3 STATE OUTPUT

STMicroelectronics 

M74HC590

WAVEFORM 1 : PROPAGATION DELAY, MINIMUM PULSE WIDTH (f=1MHz; 50% duty cycle)

WAVEFORM 2 : MINIMUM SETUP AND HOLD TIME (f=1MHz; 50% duty cycle)

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