M74HC643 Datasheet, PDF (6/11 Pages) STMicroelectronics – OCTAL BUS TRANSCEIVER WITH 3 STATE OUTPUTS INVERTING/NON INVERTING

M74HC643
TEST CIRCUIT
TEST
t_PLH, t_PHL
t_PZL, t_PLZ
t_PZH, t_PHZ
C_L = 50pF/150pF or equivalent (includes jig and probe capacitance)
R₁ = 1KΩ or equivalent
R_T = Z_OUT of pulse generator (typically 50Ω)
WAVEFORM 1 : PROPAGATION DELAY TIME (f=1MHz; 50% duty cycle)
SWITCH
Open
V_CC
GND
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