Philips Semiconductors
Product specification
8-bit parallel-in/serial-out shift register
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: standard
I
CC
category: MSI
AC CHARACTERISTICS FOR HC
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF
T
amb
(°C)
74HC
SYMBOL PARAMETER
min.
t
PHL
/ t
PLH
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
80
16
14
80
16
14
100
20
17
80
16
14
80
16
14
80
16
14
+25
typ.
52
19
15
50
18
14
36
13
10
19
7
6
17
6
5
14
5
4
22
8
6
11
4
3
17
6
5
22
8
6
max.
165
33
28
165
33
28
120
24
20
75
15
13
100
20
17
100
20
17
125
25
21
100
20
17
100
20
17
100
20
17
−40
to
+85
min.
max.
205
41
35
205
41
35
150
30
26
95
19
16
120
24
20
120
24
20
150
30
26
120
24
20
120
24
20
120
24
20
−40
to
+125
min.
max.
250
50
43
250
50
43
180
36
31
110
22
19
ns
UNIT
74HC/HCT165
TEST CONDITIONS
V
CC
WAVEFORMS
(V)
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
Fig.6
t
PHL
/ t
PLH
ns
Fig.6
t
PHL
/ t
PLH
ns
Fig.6
t
THL
/ t
TLH
ns
Fig.6
t
W
ns
Fig.6
t
W
ns
Fig.6
t
rem
ns
Fig.6
t
su
ns
Fig.6
t
su
ns
Fig.6
t
su
ns
Fig.6
December 1990
5
PHILIPS [ NXP SEMICONDUCTORS ]
