74AC20(1997) 查看數據表（PDF） - STMicroelectronics

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74AC20
(Rev.:1997)

DUAL 4-INPUT NAND GATE

STMicroelectronics 

74AC20

TEST CIRCUIT

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

RL = R1 = 500Ω or equivalent

RT = ZOUT of pulse generator (typically 50Ω)

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

4/7

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