M74HC670 データシートの表示（PDF） - STMicroelectronics

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M74HC670

4 WORD x 4 BIT REGISTER FILE (3 STATE)

STMicroelectronics 

M74HC670

TEST CIRCUIT

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)

SWITCH

Open

VCC

GND

WAVEFORM 1 : PROPAGATION DELAY, MINIMUM PULSE WIDTH, SETUP AND HOLD TIME,

MINIMUM LATCH TIME (f=1MHz; 50% duty cycle)

6/11

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