74VHCT125A 查看數據表（PDF） - STMicroelectronics

零件编号

产品描述 (功能)

生产厂家

74VHCT125A

QUAD BUS BUFFERS (3-STATE)

STMicroelectronics 

Figure 5: Test Circuit

74VHCT125A

tPLH, tPHL

tPZL, tPLZ

tPZH, tPHZ

TEST

CL =15/50pF or equivalent (includes jig and probe capacitance)

RL = R1 = 1KΩ or equivalent

RT = ZOUT of pulse generator (typically 50Ω)

Figure 6: Waveform - Propagation Delays (f=1MHz; 50% duty cycle)

SWITCH

Open

VCC

GND

5/12

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