MC14020B
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4
SWITCHING CHARACTERISTICS (Note 5) (CL = 50 pF, TA = 25_C) Characteristic
Symbol
VDD
Vdc
Min
Typ
Max
Unit
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
tTLH,
tTHL
5.0
10
15
100
50
40
200
100
80
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
tPLH,
tPHL
5.0
10
15
260
115
80
520
230
160
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
5.0
10
15
1820
805
560
3900
1725
1200
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
tPHL
5.0
10
15
370
155
115
740
310
230
ns
Clock Pulse Width
tWH
5.0
10
15
500
165
125
140
55
38
ns
Clock Pulse Frequency
fmax
5.0
10
15
1.0
3.0
4.0
2.0
6.0
8.0
MHz
Clock Rise and Fall Time
tTLH, tTHL
5.0
10
15
No Limit
Reset Pulse Width
tWL
5.0
10
15
3000
550
420
320
120
80
ns
Reset Recovery Time
trec
5.0
10
15
65
25
15
130
50
30
ns
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.