MC74HC574A
http://onsemi.com
4
AC ELECTRICAL CHARACTERISTICS (C
L
= 50 pF; Input t
r
= t
f
= 6.0 ns)
V
CC
V
Guaranteed Limit
Symbol Parameter
−55 to 25_C ≤ 85_C ≤ 125_C
Unit
f
max
Maximum Clock Frequency (50% Duty Cycle)
(Figures 2 and 5)
2.0
3.0
4.5
6.0
6.0
15
30
35
4.8
10
24
28
4.0
8.0
20
24
MHz
t
PLH
,
t
PHL
Maximum Propagation Delay, Clock to Q
(Figures 2 and 5)
2.0
3.0
4.5
6.0
160
105
32
27
200
145
40
34
240
190
48
41
ns
t
PLZ
,
t
PHZ
Maximum Propagation Delay, Output Enable to Q
(Figures 3 and 6)
2.0
3.0
4.5
6.0
150
100
30
26
190
125
38
33
225
150
45
38
ns
t
PZL
,
t
PZH
Maximum Propagation Delay, Output Enable to Q
(Figures 3 and 6)
2.0
3.0
4.5
6 0
140
90
28
24
175
120
35
30
210
140
42
36
ns
t
TLH
,
t
THL
Maximum Output Transition Time, any Output
(Figures 2 and 5)
2.0
3.0
4.5
6.0
60
27
12
10
75
32
15
13
90
36
18
15
ns
C
in
Maximum Input Capacitance 10 10 10 pF
C
out
Maximum Three−State Output Capacitance, Output in High−Impedance
State
15 15 15 pF
Typical @ 25°C, V
CC
= 5.0 V
C
PD
Power Dissipation Capacitance (Per Enabled Output)* 24 pF
*Used to determine the no−load dynamic power consumption: P
D
= C
PD
V
CC
2
f + I
CC
V
CC
.
TIMING REQUIREMENTS (C
L
= 50 pF; Input t
r
= t
f
= 6.0 ns)
Guaranteed Limit
V
CC
–55 to 25_C ≤ 85_C ≤ 125_C
Symbol Parameter Figure Volts Min Max Min Max Min Max Unit
t
su
Minimum Setup Time, Data to Clock 4 2.0
3.0
4.6
6.0
50
40
10
9.0
65
50
13
11
75
60
15
13
ns
t
h
Minimum Hold Time, Clock to Data 4 2.0
3.0
4.5
6.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
ns
t
w
Minimum Pulse Width, Clock 2 2.0
3.0
4.5
6.0
75
60
15
13
95
80
19
16
110
90
22
19
ns
t
r
, t
f
Maximum Input Rise and Fall Times 2 2.0
3.0
4.5
6.0
1000
800
500
400
1000
800
500
400
1000
800
500
400
ns
