MM74HC4020 Ver la hoja de datos (PDF) - Fairchild Semiconductor
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MM74HC4020 Datasheet PDF : 9 Pages
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AC Electrical Characteristics
VCC = 5V, TA = 25°C, CL = 15 pF, tr = tf = 6 ns
Symbol
Parameter
Conditions
Guaranteed
Typ
Units
Limit
fMAX
tPHL, tPLH
Maximum Operating Frequency
Maximum Propagation
Delay Clock to Q
(Note 6)
50
30
MHz
17
35
ns
tPHL
Maximum Propagation
Delay Reset to any Q
16
40
ns
tREM
Minimum Reset
Removal Time
10
20
ns
tW
Minimum Pulse Width
10
16
ns
Note 6: Typical Propagation delay time to any output can be calculated using: tP = 17 + 12(N–1) ns; where N is the number of the output, QW, at VCC = 5V.
AC Electrical Characteristics
VCC = 2.0V to 6.0V, CL = 50 pF, tr = tf = 6 ns (unless otherwise specified)
Symbol
Parameter
Conditions
VCC
TA = 25°C
Typ
fMAX
Maximum Operating
Frequency
2.0V
10
6
4.5V
40
30
6.0V
50
35
tPHL, tPLH
Maximum Propagation
Delay Clock to Q1
2.0V
80
210
4.5V
21
42
6.0V
18
36
tPHL, tPLH Maximum Propagation
Delay Between Stages
2.0V
80
125
4.5V
18
25
from Qn to Qn+1
tPHL
Maximum Propagation
Delay Reset to any Q
6.0V
15
21
2.0V
72
240
4.5V
24
48
(4020 and 4040)
6.0V
20
41
tREM
Minimum Reset
Removal Time
2.0V
100
4.5V
20
6.0V
16
tW
Minimum Pulse Width
2.0V
90
4.5V
16
6.0V
14
tTLH, tTHL
Maximum
Output Rise
2.0V
30
75
4.5V
10
15
and Fall Time
6.0V
9
13
tr, tf
Maximum Input Rise and
Fall Time
1000
500
400
CPD
Power Dissipation
(per package)
55
Capacitance (Note 7)
CIN
Maximum Input
Capacitance
5
10
TA = −40 to 85°C TA = −55 to 125°C
Guaranteed Limits
5
4
24
20
28
24
265
313
53
63
45
53
156
188
31
38
26
31
302
358
60
72
51
61
126
149
25
50
21
25
100
120
20
24
18
20
95
110
19
22
16
19
1000
1000
500
500
400
400
Units
MHz
ns
ns
ns
ns
ns
ns
ns
pF
10
10
pF
Note 7: CPD determines the no load dynamic power consumption, PD = CPD VCC2 f + ICC VCC, and the no load dynamic current consumption,
IS = CPD VCC f + ICC.
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