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參數(shù)資料
| 型號(hào)： | LCK4950 |
| 英文描述： | Low-Voltage PLL Clock Driver |
| 中文描述： | 低電壓PLL時(shí)鐘驅(qū)動(dòng)器 |
| 文件頁(yè)數(shù)： | 7/16頁(yè) |
| 文件大?。?/td> | 215K |
| 代理商： | LCK4950 |
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Agere Systems Inc.
7
Data Sheet
November 2001
Low-Voltage PLL Clock Driver
LCK4950
Applications
(continued)
5-9700 (F)
Figure 3. Dual-Frequency Configuration
5-9701 (F)
Figure 4. Dual-Frequency Configuration
66.66 MHz
33.33 MHz
33.33 MHz
66.66 MHz
fsela
fselb
fselc
fseld
FBsel
Qd
Qc
Qb
Qa
INPUT REF
16.66 MHz
0
0
1
1
1
1
1
2
5
33.33 MHz
66.66 MHz
66.66 MHz
66.66 MHz
fsela
fselb
fselc
fseld
FBsel
Qd
Qc
Qb
Qa
INPUT REF
33.33 MHz
1
1
1
0
0
1
1
2
5
5-9702 (F)
Figure 5. Dual-Frequency Configuration
5-9703 (F)
Figure 6. Triple-Frequency Configuration
33.33 MHz
33.33 MHz
33.33 MHz
66.66 MHz
fsela
fselb
fselc
fseld
FBsel
Qd
Qc
Qb
Qa
INPUT REF
16.66 MHz
0
0
1
1
1
1
1
2
5
40 MHz
40 MHz
80 MHz
160 MHz
fsela
fselb
fselc
fseld
FBsel
Qd
Qc
Qb
Qa
INPUT REF
20 MHz
0
1
0
0
1
1
1
2
5
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are
absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in
excess of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for
extended periods can adversely affect device reliability.
Table 6. Absolute Maximum Ratings
Parameter
Symbol
V
DD
, V
DDA
V
I
I
IN
T
Stor
Min
–
0.3
–
0.3
—
–
40
Max
4.6
Unit
V
V
mA
°
C
Supply Voltage
Input Voltage
Input Current
Storage Temperature Range
V
DD
+ 0.3
±20
125
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