74LCX646_04 Datasheet, PDF (8/16 Pages) STMicroelectronics – LOW VOLT. CMOS OCTAL BUS TRANSCEIVER/REGISTER WITH 5 VOLT TOLERANT INPUTS AND OUTPUTS(3-STATE)

M74LCX646
Figure 5: Test Circuit
t_PLH, t_PHL
t_PZL, t_PLZ
t_PZH, t_PHZ
TEST
SWITCH
Open
6V
GND
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 6: Waveform - Propagation Delays, SAB, SBA, An, Bn, Times (f=1MHz; 50% duty cycle)
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