CD4020B 查看數據表（PDF） - ON Semiconductor
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CD4020B Datasheet PDF : 8 Pages
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MC14020B
SWITCHING CHARACTERISTICS (Note 5) (CL = 50 pF, TA = 25_C)
Characteristic
Symbol
VDD
Vdc
Min
Typ
Max
(Note 6)
Output Rise and Fall Time
tTLH, tTHL = (1.5 ns/pF) CL + 25 ns
tTLH, tTHL = (0.75 ns/pF) CL + 12.5 ns
tTLH, tTHL = (0.55 ns/pF) CL + 9.5 ns
Propagation Delay Time
Clock to Q1
tPHL, tPLH = (1.7 ns/pF) CL + 175 ns
tPHL, tPLH = (0.66 ns/pF) CL + 82 ns
tPHL, tPLH = (0.5 ns/pF) CL + 55 ns
Clock to Q14
tPHL, tPLH − (1.7 ns/pF) CL + 1735 ns
tPHL, tPLH = (0.66 ns/pF) CL + 772 ns
tPHL, tPLH = (0.5 ns/pF) CL + 535 ns
Propagation Delay Time
Reset to Qn
tPHL = (1.7 ns/pF) CL + 285 ns
tPHL = (0.66 ns/pF) CL + 122 ns
tPHL = (0.5 ns/pF) CL + 90 ns
Clock Pulse Width
tTLH,
tTHL
tPLH,
tPHL
tPHL
tWH
5.0
−
100
200
10
−
50
100
15
−
40
80
5.0
−
260
520
10
−
115
230
15
−
80
160
5.0
−
1820
3900
10
−
805
1725
15
−
560
1200
5.0
−
370
740
10
−
155
310
15
−
115
230
5.0
500
140
−
10
165
55
−
15
125
38
−
Clock Pulse Frequency
fmax
5.0
1.0
2.0
−
10
3.0
6.0
−
15
4.0
8.0
−
Clock Rise and Fall Time
tTLH, tTHL
5.0
10
15
No Limit
Reset Pulse Width
tWL
5.0
3000
320
−
10
550
120
−
15
420
80
−
Reset Recovery Time
trec
5.0
−
65
130
10
−
25
50
15
−
15
30
5. The formulas given are for the typical characteristics only at 25_C.
6. Data labelled “Typ” is not to be used for design purposes but is intended as an indication of the IC’s potential performance.
Unit
ns
ns
ns
ns
ns
MHz
−
ns
ns
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