HCF4020B Datasheet, PDF (5/11 Pages) STMicroelectronics – RIPPLE-CARRY BINARY COUNTER/DIVIDERS 14 STAGE

HCF4020B
DYNAMIC ELECTRICAL CHARACTERISTICS (T_amb = 25°C, C_L = 50pF, R_L = 200KΩ, t_r = t_f = 20 ns)
Symbol
Parameter
V_DD (V)
Test Condition
t_PLH t_PHL Propagation Delay Time
(∅ to Q1 Out)
t_PLH t_PHL Propagation Delay Time
(Qn to Qn+1)
t_THL t_TLH Transition Time
t_W Minimum Input Pulse
Width
t_r , t_f Input Pulse Rise and Fall
Time
f_max Maximum Clock Input
Frequency
t_PHL Propagation Delay Time
t_W Minimum Reset Pulse
Width
t_REM Reset Removal Time
INPUT-PULSE OPERATION
5
10
15
5
10
15
5
10
15
5
10
15
5
10
15
5
10
15
RESET OPERATION
5
10
15
5
10
15
5
10
15
(*) Typical temperature coefficient for all V_DD value is 0.3%/°C.
Value (*)
Unit
Min. Typ. Max.
180 360
80 160 ns
65 130
100 200
40 80 ns
30 60
100 200
50 100 ns
40 80
70 140
30 60 ns
20 40
unlimited
µs
3.5 7
8 16
12 24
MHz
140 280
60 120 ns
50 100
100 200
40 80 ns
30 60
175 350
75 150 ns
50 100
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