IN74HC74A
AC ELECTRICAL CHARACTERISTICS (CL=50pF,Input tr=tf=6.0 ns)
Symbol
Parameter
VCC
Guaranteed Limit
Unit
V
25 °C
to
≤85°C ≤125°C
-55°C
fmax
Maximum Clock Frequency (50% Duty Cycle)
(Figures 1 and 4)
2.0
4.5
6.0
6.0
30
35
4.8
24
28
4.0
20
24
MHz
ns
tPLH, tPHL Maximum Propagation Delay, Clock to Q or Q
(Figures 1 and 4)
2.0
4.5
6.0
100
20
17
125
25
21
150
30
26
tPLH, tPHL Maximum Propagation Delay, Set or Reset to Q or
Q (Figures 2 and 4)
2.0
4.5
6.0
105
21
18
130
26
22
160
32
27
ns
tTLH, tTHL Maximum Output Transition Time, Any Output
(Figures 1 and 4)
2.0
4.5
6.0
75
15
13
95
19
16
110
22
19
ns
CIN
Maximum Input Capacitance
-
10
10
10
pF
pF
CPD
Power Dissipation Capacitance (Per Flip-Flop)
Typical @25°C,VCC=5.0 V
Used to determine the no-load dynamic power
consumption:
39
PD=CPDVCC2f+ICCVCC
TIMING REQUIREMENTS (CL=50pF,Input tr=tf=6.0 ns)
Symbol
Parameter
VCC
V
Guaranteed Limit
Unit
25 °C
to-
≤85°C ≤125°C
55°C
tsu
Minimum Setup Time, Data to Clock (Figure 3)
Minimum Hold Time, Clock to Data (Figure 3)
2.0
4.5
6.0
80
16
14
100
20
17
120
24
20
ns
ns
ns
ns
ns
ns
th
2.0
4.5
6.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
trec
Minimum Recovery Time, Set or Reset Inactive to
Clock (Figure 2)
2.0
4.5
6.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
tw
Minimum Pulse Width, Clock (Figure 1)
2.0
4.5
6.0
60
12
10
75
15
13
90
18
15
tw
Minimum Pulse Width, Set or Reset (Figure 2)
Maximum Input Rise and Fall Times (Figure 1)
2.0
4.5
6.0
60
12
10
75
15
13
90
18
15
tr, tf
2.0
4.5
6.0
1000
500
400
1000
500
400
1000
500
400
Rev. 00
IKSEMICON [ IK SEMICON CO., LTD ]
