MC14520B(2014) View Datasheet(PDF) - ON Semiconductor
Part Name
Description
MFG CO.
MC14520B Datasheet PDF : 7 Pages
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MC14518B, MC14520B
SWITCHING CHARACTERISTICS (Note 6) (CL = 50 pF, TA = 25_C)
All Types
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 + 9.5 ns
Propagation Delay Time
Clock to Q/Enable to Q
tPLH, tPHL = (1.7 ns/pF) CL + 215 ns
tPLH, tPHL = (0.66 ns/pF) CL + 97 ns
tPLH, tPHL = (0.5 ns/pF) CL + 75 ns
Reset to Q
tPHL = (1.7 ns/pF) CL + 265 ns
tPHL = (0.66 ns/pF) CL + 117 ns
tPHL = (0.66 ns/pF) CL + 95 ns
Clock Pulse Width
Symbol
tTLH,
tTHL
tPLH,
tPHL
tPHL
tw(H)
tw(L)
VDD
5.0
10
15
5.0
10
15
5.0
10
15
5.0
10
15
Typ
Min
(Note 7)
Max
−
100
200
−
50
100
−
40
80
−
280
560
−
115
230
−
80
160
−
330
650
−
130
230
−
90
170
200
100
−
100
50
−
70
35
−
Clock Pulse Frequency
fcl
5.0
−
2.5
1.5
10
−
6.0
3.0
15
−
8.0
4.0
Clock or Enable Rise and Fall Time
tTHL, tTLH
5.0
−
10
−
15
−
−
15
−
5
−
4
Enable Pulse Width
tWH(E)
5.0
440
220
−
10
200
100
−
15
140
70
−
Reset Pulse Width
tWH(R)
5.0
280
125
−
10
120
55
−
15
90
40
−
Reset Removal Time
trem
5.0
–5
– 45
−
10
15
– 15
−
15
20
–5
−
6. The formulas given are for the typical characteristics only at 25_C.
7. 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
MHz
μs
ns
ns
ns
500 μF
VDD
ID
0.01 μF
CERAMIC
PULSE
GENERATOR
C Q0
Q1
Q2
E
R
Q3
CL CL
CL
CL
VSS
20 ns
90%
50%
VARIABLE
WIDTH
20 ns
10%
VSS
Figure 1. Power Dissipation Test Circuit and Waveform
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