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 74HC
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
CP to Q
7
propagation delay
MR to Q
7
output transition time
+25
typ.
50
18
14
47
17
14
19
7
6
80
16
14
100
20
17
0
0
0
80
16
14
100
20
17
2
2
2
0
0
0
6.0
30
35
17
6
5
25
9
7
−19
−7
−6
14
5
4
33
12
10
−8
−3
−2
−28
−10
−8
19
57
68
−40
to
+85
max. min.
150
30
26
160
32
27
75
15
13
100
20
17
125
25
21
0
0
0
100
20
17
125
25
21
2
2
2
0
0
0
4.8
24
28
max.
190
38
33
200
40
34
95
19
16
120
24
20
150
30
26
0
0
0
120
24
20
150
30
26
2
2
2
0
0
0
4.0
20
24
−40
to
+125
min. max.
225
45
38
240
48
41
110
22
19
ns
74HC/HCT166
TEST CONDITIONS
UNIT
V
CC
(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
2.0
4.5
6.0
WAVEFORMS
Fig.7
t
PHL
ns
Fig.8
t
THL
/ t
TLH
ns
Fig.7
t
W
clock pulse width
HIGH or LOW
master reset pulse width
LOW
removal time
MR to CP
set-up time
D
n
, CE to CP
set-up time
PE to CP
hold time
D
n
, CE to CP
hold time
PE to CP
maximum clock pulse
frequency
ns
Fig.7
t
W
ns
Fig.8
t
rem
ns
Fig.8
t
su
ns
Fig.9
t
su
ns
Fig.8
t
h
ns
Fig.8
t
h
ns
Fig.9
f
max
MHz
Fig.7
December 1990
6
PHILIPS [ NXP SEMICONDUCTORS ]
