Datasheet

1998 Jun 04 12
Philips Semiconductors Product specification
8-bit serial-in/serial or parallel-out shift
register with output latches; 3-state
74HC/HCT595
AC WAVEFORMS
Fig.7 Waveforms showing the clock (SH
CP
) to output (Q
7
’) propagation delays, the shift clock pulse width and
maximum shift clock frequency.
(1) HC: V
M
= 50%; V
I
= GND to V
CC
HCT: V
M
= 1.3 V; V
I
= GND to 3 V.
handbook, full pagewidth
MSA699
t
PLH
t
PHL
t
W
1/f
max
V
M
(1)
V
M
(1)
SH
CP
INPUT
Q
7
' OUTPUT
t
THL
t
TLH
90%
10%
Fig.8 Waveforms showing the storage clock (ST
CP
) to output (Q
n
) propagation delays, the storage clock pulse
width and the shift clock to storage clock set-up time.
(1) HC: V
M
= 50%; V
I
= GND to V
CC
HCT: V
M
= 1.3 V; V
I
= GND to 3 V.
handbook, full pagewidth
MSA700
t
PLH
t
PHL
t
W
1/f
max
V
M
(1)
V
M
(1)
V
M
(1)
ST
CP
INPUT
t
su
SH
CP
INPUT
Q
n
OUTPUT