74LCX240_04 Datasheet, PDF (5/12 Pages) STMicroelectronics – LOW VOLTAGE CMOS OCTAL BUS BUFFER (3-STATE INV.) WITH 5V TOLERANT INPUTS AND OUTPUTS

Figure 3: Test Circuit
74LCX240
t_PLH, t_PHL
t_PZL, t_PLZ
t_PZH, t_PHZ
TEST
C_L = 50 pF or equivalent (includes jig and probe capacitance)
R_L = R1 = 500Ω or equivalent
R_T = Z_OUT of pulse generator (typically 50Ω)
Figure 4: Waveform - Propagation Delays (f=1MHz; 50% duty cycle)
SWITCH
Open
6V
GND
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