M54HC595_04 Datasheet, PDF (8/15 Pages) STMicroelectronics – RAD-HARD 8 BIT SHIFT REGISTER WITH OUTPUT LATCHES (3 STATE)

M54HC595
Figure 7: Test Circuit
t_PLH, t_PHL
t_PZL, t_PLZ
t_PZH, t_PHZ
TEST
SWITCH
Open
V_CC
GND
C_L = 50pF/150pF or equivalent (includes jig and probe capacitance)
R₁ = 1KΩ or equivalent
R_T = Z_OUT of pulse generator (typically 50Ω)
Figure 8: Waveform - SCK To QH’ Propagation Delay Times, SCK Minimum Pulse Width
(f=1MHz; 50% duty cycle)
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