HCF4521B Datasheet, PDF (5/12 Pages) STMicroelectronics – 24 STAGE FREQUENCY DIVIDER

HCF4521
DYNAMIC ELECTRICAL CHARACTERISTICS (T_amb = 25 ^oC, C_L = 50 pF, R_L = 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
t_PLH Output Rise Time
t_PHL Output Fall Time
t_PHL Propagation Delay Time Clock to Q18
t_PLH
t_PHL Propagation Delay Time Clock to Q24
t_PLH
tPHL Propagation Delay Time RESET to Qn
t_WH(cl) Clock Pulse Width
f_cl Clock Pulse Frequency
tTLH Clock Rise and Fall Time
t_THL
t_W(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
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