MC74F568 查看數據表（PDF） - Motorola => Freescale
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MC74F568 Datasheet PDF : 7 Pages
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MC54/74F568 • MC54/74F569
MC54/74F568
STATE DIAGRAMS
MC54/74F569
0
1
2
3
0
1
2
3
4
10
15
9
4
13
11
14
15
5
14
6
13
7
8
7
6
5
COUNT DOWN
COUNT UP
AC CHARACTERISTICS
Symbol
fmax
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPHL
tPZH
tPZL
tPHZ
tPLZ
Parameter
Maximum Clock Frequency
Propagation Delay
CP to On (PE HIGH or LOW)
Propagation Delay
CP to TC
Propagation Delay
CET to TC
Propagation Delay
U/D to TC (′F568)
Propagation Delay
U/D to TC (′F569)
Propagation Delay
CP to CC
Propagation Delay
CEP, CET to CC
Propagation Delay
MR to On
Output Enable Time
OE to On
Output Disable Time
OE to On
12
12
11
10
9
8
COUNT DOWN
COUNT UP
54 / 74F
TA = + 25°C
VCC = + 5.0 V
CL = 50 pF
Min
Max
100
3.0
8.5
4.0
11.5
5.5
15.5
4.0
11
2.5
6.0
2.5
8.0
3.5
11
4.0
16
3.5
11
4.0
10.5
2.5
7.0
2.0
6.0
2.5
6.5
4.0
11
5.0
13
2.5
7.0
3.0
8.0
1.5
6.5
2.0
6.0
54F
TA = – 55 to + 125°C
VCC = 5.0 V ± 10%
CL = 50 pF
Min
Max
60
3.0
10.5
4.0
14
5.5
18.5
4.0
13.5
2.5
8.0
2.5
10
3.5
13.5
4.0
19
3.5
13.5
4.0
13
2.5
9.0
2.0
8.0
2.5
8.5
4.0
13.5
74F
TA = 0 to + 70°C
VCC = 5.0 V ± 10%
CL = 50 pF
Min
Max
85
3.0
9.5
4.0
13
5.5
17.5
4.0
12.5
2.5
7.0
2.5
9.0
3.5
12.5
4.0
18
3.5
12.5
4.0
12
2.5
8.0
2.0
7.0
2.5
7.5
4.0
12.5
5.0
15.5
5.0
14.5
2.5
9.0
2.5
8.0
3.0
10
3.0
9.0
1.5
8.5
1.5
7.5
2.0
8.0
2.0
7.0
Unit
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
FAST AND LS TTL DATA
4-224
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