M74HC693B1R(2001) 查看數據表（PDF） - STMicroelectronics

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M74HC693B1R
(Rev.:2001)

4 BIT BINARY COUNTER/REGISTER (3-STATE)

STMicroelectronics 

TEST CIRCUIT

M74HC693

TEST

tPLH, tPHL

tPZL, tPLZ

tPZH, tPHZ

CL = 50pF/150pF or equivalent (includes jig and probe capacitance)

R1 = 1KΩ or equivalent

RT = ZOUT of pulse generator (typically 50Ω)

WAVEFORM 1: INPUT WAVEFORM (f=1MHz; 50% duty cycle)

SWITCH

Open

VCC

GND

9/17

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