MC14027B
SWITCHING CHARACTERISTICS (Note 5) (CL = 50 pF, TA = 25_C)
Characteristic
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 + 12.5 ns
Propagation Delay Times**
Clock to Q, Q
tPLH, tPHL = (1.7 ns/pF) CL + 90 ns
tPLH, tPHL = (0.66 ns/pF) CL + 42 ns
tPLH, tPHL = (0.5 ns/pF) CL + 25 ns
Set to Q, Q
tPLH, tPHL = (1.7 ns/pF) CL + 90 ns
tPLH, tPHL = (0.66 ns/pF) CL + 42 ns
tPLH, tPHL = (0.5 ns/pF) CL + 25 ns
Reset to Q, Q
tPLH, tPHL = (1.7 ns/pF) CL + 265 ns
tPLH, tPHL = (0.66 ns/pF) CL + 67 ns
tPLH, tPHL = (0.5 ns/pF) CL + 50 ns
Setup Times
Symbol
tTLH,
tTHL
tPLH,
tPHL
VDD
5.0
10
15
5.0
10
15
5.0
10
15
5.0
10
15
tsu
5.0
10
15
Typ
Min
(Note 6)
Max
−
100
200
−
50
100
−
40
80
−
175
350
−
75
150
−
50
100
−
175
350
−
75
150
−
50
100
−
350
450
−
100
200
−
75
150
140
70
−
50
25
−
35
17
−
Hold Times
th
5.0
140
70
−
10
50
25
−
15
35
17
−
Clock Pulse Width
tWH, tWL
5.0
330
165
−
10
110
55
−
15
75
38
−
Clock Pulse Frequency
fcl
5.0
−
3.0
1.5
10
−
9.0
4.5
15
−
13
6.5
Clock Pulse Rise and Fall Time
tTLH, tTHL
5.0
−
10
−
15
−
−
15
−
5.0
−
4.0
Removal Times
Set
trem
5
90
10
−
10
45
5
−
15
35
3
−
Reset
5
50
– 30
−
10
25
– 15
−
15
20
– 10
−
Set and Reset Pulse Width
tWH
5.0
250
125
−
10
100
50
−
15
70
35
−
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
ms
ns
ns
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