WS74HC595
AC ELECTRICAL CHARACTERISTICS (unless otherwise noted)
Parameter
Symbol
From To
Unit
(Input) (Output)
MHz
Vcc
Maximum
clock
frequency
fmax
Ta = 25℃
Min Typ Max
2V
6
26
4.5V
31
38
6V
36
42
2V
50
160
4.5V
17
32
74HC595
Parameter
Min
5
25
29
Max
C
L
=50pF
SRCK Q
8
'
ns
200
40
Maximum
Propagation
Delay
(Clock to Q)
tpd
LCK
Q
1
-Q
8
ns
6V
2V
4.5V
6V
2V
14
50
17
27
150
30
14
60
26
200
34
187
37
32
250
C
L
=50pF
LCK
Maximum
Propagation
Delay (SRCL
to
Q
8
'
Q
1
-Q
8
ns
t
PHL
SRCL
QH'
4.5V
6V
2V
22
40
19
51
34
175
50
43
219
C
L
=150pF
ns
4.5V
6V
18
35
15
40
15
13
30
44
37
C
L
=50pF
Maximum
Propagation
Delay
(OE to Q)
2V
4.5V
6V
ten
OE
Q
1
-Q
8
ns
2V
4.5V
6V
2V
tdis
OE
Q
1
-Q
8
ns
4.5V
6V
2V
4.5V
6V
2V
Q
1
-Q
8
Maximum
Output
Rising and
Falling Time
t
t
Q
8
'
ns
4.5V
6V
2V
4.5V
Q
1
-Q
8
Power
Dissipation
Capacitance
6V
C
PD
pF
150
30
26
70
200
23
40
19
34
42 200
23
40
20
34
28
60
8
12
6
10
28
75
8
15
6
13
45
210
17
42
13
36
400
187
37
32
C
L
=50pF
250
50
43
C
L
=150pF
250
50
43
75
15
13
95
19
16
265
53
C
L
=50pF
C
L
=50pF
C
L
=150pF
45
–
–
PARAMETER MEASUREMENT INFORMATION
Vcc
Test
Point
From
Output
Under Test
PARAMETER
R
L
CL
S1
S2
S1
R
L
t
en
S2
C
L
t
dis
t
PZH
t
PZL
t
PHZ
t
PLZ
1 kΩ
50 pF
150 pF
1kΩ
50 pF
or
Open
Closed
Closed
Open
Closed
Open
Closed
Open
Open
t
pd
or t
t
-
50 pF
150 pF
or
Open
5
WINGS [ WING SHING COMPUTER COMPONENTS ]
