HCF4521 查看數據表（PDF） - STMicroelectronics
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HCF4521 Datasheet PDF : 12 Pages
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HCF4521
DYNAMIC ELECTRICAL CHARACTERISTICS (Tamb = 25 oC, CL = 50 pF, RL = 200 KΩ,
typical temperaturecoefficent for all VDD values is 03 %/oC, all input rise and fall times= 20 ns)
Symb ol
P a ramet er
tPLH Output Rise Time
tPHL Output Fall Time
tPHL Propagation Delay Time Clock to Q18
tPLH
tPHL Propagation Delay Time Clock to Q24
tPLH
tPHL Propagation Delay Time RESET to Qn
tWH(cl) Clock Pulse Width
fcl Clock Pulse Frequency
tTLH Clock Rise and Fall Time
tTHL
tW(R) Reset Pulse Width
Test Conditions
V DD
(V)
5
10
15
5
10
15
5
10
15
5
10
15
5
10
15
5
10
15
5
10
15
5
10
15
5
10
15
Value
Min. Typ. Max.
385
150
120
1400
600
450
100
50
40
100
50
40
4.5
1.7
1.3
6.0
2.2
1.7
1300
500
375
140
55
40
3.5
9
12
700
300
225
200
100
80
200
100
80
9.0
3.5
2.7
12
4.5
3.5
2600
1000
750
2
5
6.5
15
15
15
Un it
ns
ns
µs
µs
ns
ns
MHz
µs
ns
5/12
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