Philips Semiconductors
Product specification
8-bit parallel-in/serial-out shift register
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF
T
amb
(°C)
74HCT
SYMBOL PARAMETER
min.
t
PHL
/ t
PLH
t
PHL
/ t
PLH
t
PHL
/ t
PLH
t
THL
/ t
TLH
t
W
t
W
t
rem
t
su
t
su
t
su
t
h
t
h
f
max
propagation delay
CE, CP to Q
7
, Q
7
propagation delay
PL to Q
7
, Q
7
propagation delay
D
7
to Q
7
, Q
7
output transition time
clock pulse width
HIGH or LOW
parallel load pulse
width; LOW
removal time
PL to CP, CE
set-up time
D
s
to CP, CE
set-up time
CE to CP; CP to CE
set-up time
D
n
to PL
hold time
D
s
to CP, CE; D
n
to PL
hold time
CE to CP, CP to CE
maximum clock pulse
frequency
16
20
20
20
20
20
7
0
26
+25
typ.
17
20
14
7
6
9
8
2
7
10
−1
−7
44
−40
to
+85
−40
to
+125
74HC/HCT165
TEST CONDITIONS
WAVEFORMS
UNIT V
CC
(V)
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
MHz
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
Fig.6
Fig.6
Fig.6
Fig.6
Fig.6
Fig.6
Fig.6
Fig.6
Fig.6
Fig.6
Fig.6
Fig.6
Fig.6
max. min. max. min. max.
34
40
28
15
20
25
25
25
25
25
9
0
21
43
50
35
19
24
30
30
30
30
30
11
0
17
51
60
42
22
December 1990
8