HCF4520B Просмотр технического описания (PDF) - STMicroelectronics

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HCF4520B

DUAL BINARY UP COUNTER

STMicroelectronics 

TEST CIRCUIT

HCF4520B

CL = 50pF or equivalent (includes jig and probe capacitance)

RL = 200KΩ

RT = ZOUT of pulse generator (typically 50Ω)

WAVEFORM 1 : MINIMUM PULSE WIDTH AND REMOVAL TIME (f=1MHz; 50% duty cycle)

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