MM74HC273 Просмотр технического описания (PDF) - Fairchild Semiconductor
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MM74HC273 Datasheet PDF : 7 Pages
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AC Electrical Characteristics
VCC = 5V, TA = 25°C, CL = 15 pF, tr = tf = 6 ns
Symbol
Parameter
fMAX
tPHL, tPLH
tPHL
tREM
ts
tH
tW
Maximum Operating
Frequency
Maximum Propagation
Delay, Clock to Output
Maximum Propagation
Delay, Clear to Output
Minimum Removal Time,
Clear to Clock
Minimum Setup Time
Data to Clock
Minimum Hold Time
Clock to Data
Minimum Pulse Width
Clock or Clear
Conditions
Guaranteed
Typ
Units
Limit
50
30
MHz
18
27
ns
18
27
ns
10
20
ns
10
20
ns
−2
0
ns
10
16
ns
AC Electrical Characteristics
CL = 50 pF, tr = tf = 6 ns (unless otherwise specified)
Symbol
Parameter
Conditions
VCC
TA = 25°C
TA = −40 to 85°C TA = −55 to 125°C
Typ
Guaranteed Limits
fMAX
Maximum Operating
Frequency
2.0V
16
5
4
3
4.5V
74
27
21
18
6.0V
78
31
24
20
tPHL, tPLH Maximum Propagation
Delay, Clock to Output
2.0V
38
135
170
205
4.5V
14
27
34
41
6.0V
12
23
29
35
tPHL
Maximum Propagation
Delay, Clear to Output
2.0V
42
135
170
205
4.5V
19
27
34
41
6.0V
18
23
29
35
tREM
Minimum Removal Time
Clear to Clock
2.0V
0
25
32
37
4.5V
0
5
6
7
6.0V
0
4
5
6
ts
Minimum Setup Time
Data to Clock
2.0V
26
100
125
150
4.5V
7
20
25
30
6.0V
5
17
21
25
tH
Minimum Hold Time
Clock to Data
2.0V
−15
0
0
0
4.5V
−6
0
0
0
6.0V
−4
0
0
0
tW
Minimum Pulse Width
Clock or Clear
2.0V
34
80
100
120
4.5V
11
16
20
24
6.0V
10
14
18
20
tr, tf
Maximum Input Rise and
Fall Time, Clock
2.0V
4.5V
1000
500
1000
500
1000
500
6.0V
400
400
400
tTHL, tTLH
Maximum Output Rise
and Fall Time
2.0V
28
75
95
110
4.5V
11
15
19
22
6.0V
9
13
16
19
CPD
Power Dissipation
(per flip-flop)
45
Capacitance (Note 5)
CIN
Maximum Input
Capacitance
7
10
10
10
Note 5: CPD determines the no load dynamic power consumption, PD = CPD VCC2f + ICC VCC, and the no load dynamic current consumption,
IS = CPD VCC f + ICC.
Units
MHz
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
pF
pF
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