Datasheet

74HC_HCT594_3 © NXP B.V. 2006. All rights reserved.
Product data sheet Rev. 03 — 20 December 2006 17 of 26
NXP Semiconductors
74HC594; 74HCT594
8-bit shift register with output register
12. Waveforms
Measurement points are given in Table 10.
t
PLH
and t
PHL
are the same as t
pd
.
t
TLH
= LOW to HIGH output transition time; t
THL
= HIGH to LOW output transition time.
Fig 9. The shift clock (SHCP) to output (Q7S) propagation delays, the shift clock pulse
width, the maximum shift clock frequency, and output transition times
Measurement points are given in Table 10.
t
PLH
and t
PHL
are the same as t
pd
.
Fig 10. The storage clock (STCP) to output (Qn), propagation delays, the storage clock
pulse width, the maximum storage clock pulse frequency and the shift clock to
storage clock set-up time
001aae341
SHCP input
Q7S output
V
M
t
PLH
t
TLH
t
THL
t
PHL
V
M
t
W
1/f
max
V
M
t
W
1/ f
max
V
M
V
M
t
su
t
PLH
Qn outputs
STCP input
SHCP input
t
PHL
mla512