MC74HC73A
http://onsemi.com
3
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6 ns)
Symbol
Parameter
VCC
V
Guaranteed Limit
Unit
– 55 to
25_C
v 85_C
v 125_C
fmax
Maximum Clock Frequency (50% Duty Cycle)
(Figures 1 and 4)
2.0
4.5
6.0
30
35
4.8
24
28
4.0
20
24
MHz
tPLH,
tPHL
Maximum Propagation Delay, Clock to Q or Q
(Figures 1 and 4)
2.0
4.5
6.0
125
25
21
155
31
26
190
38
32
ns
tPLH,
tPHL
Maximum Propagation Delay, Reset to Q or Q
(Figures 2 and 4)
2.0
4.5
6.0
155
31
26
195
39
33
235
47
40
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
pF
CPD
Power Dissipation Capacitance (Per FlipFlop)*
Typical @ 25°C, VCC = 5.0 V
pF
35
* Used to determine the noload dynamic power consumption: PD = CPD VCC2f + ICC VCC.
TIMING REQUIREMENTS (Input tr = tf = 6 ns)
Symbol
Parameter
VCC
V
Guaranteed Limit
Unit
– 55 to
25_C
v 85_C
v 125_C
tsu
Minimum Setup Time, J or K to Clock
(Figure 3)
2.0
4.5
6.0
100
20
17
125
25
21
150
30
26
ns
th
Minimum Hold Time, Clock to J or K
(Figure 3)
2.0
4.5
6.0
3
ns
trec
Minimum Recovery Time, Reset Inactive to Clock
(Figure 2)
2.0
4.5
6.0
100
20
17
125
25
21
150
30
26
ns
tw
Minimum Pulse Width, Clock
(Figure 1)
2.0
4.5
6.0
80
16
14
100
20
17
120
24
20
ns
tw
Minimum Pulse Width, Reset
(Figure 2)
2.0
4.5
6.0
80
16
14
100
20
17
120
24
20
ns
tr, tf
Maximum Input Rise and Fall Times
(Figure 1)
2.0
4.5
6.0
1000
500
400
1000
500
400
1000
500
400
ns