14521BG 데이터 시트보기 (PDF) - ON Semiconductor
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14521BG Datasheet PDF : 9 Pages
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MC14521B
ÎÎÎÎSWÎÎITCÎÎHINÎÎG CÎÎHARÎÎACÎÎTERÎÎISTÎÎICSÎÎ(NoÎÎte 5ÎÎ) (CÎÎL = 5ÎÎ0 pFÎÎ, TAÎÎ= 25ÎÎ_C)ÎÎÎÎVDDÎÎÎÎÎÎÎÎÎÎÎÎTypÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
Characteristic
Symbol
Vdc
Min
(Note 6)
Max
Unit
Output Rise and Fall Time (Counter Outputs)
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 Time
Clock to Q18
tPHL, tPLH = (1.7 ns/pF) CL + 4415 ns
tPHL, tPLH = (0.66 ns/pF) CL + 1667 ns
tPHL, tPLH = (0.5 ns/pF) CL + 1275 ns
Clock to Q24
tPHL, tPLH = (1.7 ns/pF) CL + 5915 ns
tPHL, tPLH = (0.66 ns/pF) CL + 2167 ns
tPHL, tPLH = (0.5 ns/pF) CL + 1675 ns
tTLH, tTHL
5.0
10
15
tPHL, tPLH
5.0
10
15
5.0
10
15
ns
−
100
200
−
50
100
−
40
80
ms
−
4.5
9.0
−
1.7
3.5
−
1.3
2.7
−
6.0
12
−
2.2
4.5
−
1.7
3.5
Propagation Delay Time
Reset to Qn
tPHL = (1.7 ns/pF) CL + 1215 ns
tPHL = (0.66 ns/pF) CL + 467 ns
tPHL = (0.5 ns/pF) CL + 350 ns
Clock Pulse Width
tPHL
ns
5.0
−
1300
2600
10
−
500
1000
15
−
375
750
tWH(cl)
5.0
385
140
−
ns
10
150
55
−
15
120
40
−
Clock Pulse Frequency
fcl
5.0
−
3.5
2.0
MHz
10
−
9.0
5.0
15
−
12
6.5
Clock Rise and Fall Time
tTLH, tTHL
5.0
−
−
15
ms
10
−
−
5.0
15
−
−
4.0
Reset Pulse Width
tWH(R)
5.0
1400
700
10
600
300
15
450
225
−
ns
−
−
Reset Removal Time
trem
5.0
30
– 200
−
ns
10
0
– 160
−
15
– 40
– 110
−
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.
500 mF
PULSE
GENERATOR
VDD
ID
0.01 mF
CERAMIC
VDD
IN 2
R
VSS
VDD
Q18
Q19
Q20
CL
CL
Q21
CL
Q22
CL
Q23
CL
Q24
CL
CL
VSS
20 ns
20 ns
Vin
90%
VDD
50%
10%
0V
50% DUTY CYCLE
Figure 1. Power Dissipation Test Circuit and Waveform
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