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參數(shù)資料
| 型號(hào)： | MC12439FN |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 時(shí)鐘產(chǎn)生/分配 |
| 英文描述： | 800 MHz, OTHER CLOCK GENERATOR, PQCC28 |
| 封裝： | PLASTIC, LCC-28 |
| 文件頁數(shù)： | 8/10頁 |
| 文件大小： | 155K |
| 代理商： | MC12439FN |
MC12439
376
FREESCALE SEMICONDUCTOR ADVANCED CLOCK DRIVERS DEVICE DATA
Table 5. AC Characteristics (TA = 0 to 70°C; VCC = 3.3 to 5.0V ±5%)
Symbol
Characteristic
Min
Max
Unit
Condition
FMAXI
Maximum Input Frequency
S_CLOCK
Xtal Oscillator
FREF_EXT
10
20
Note1
1.
Maximum frequency on FREF_EXT is a function of the internal M counter limitations. The phase detector can handle up to 100 MHz on the
input, but the M counter must remain in the valid range of 25
≤ M ≤ 50. See PROGRAMMING INTERFACE in this data sheet for more details.
MHz
FMAXO
Maximum Output Frequency
VCO (Internal)
FOUT
400
50
900
800
MHz
Note2
2.
50
to V
CC – 2.0 V pulldown.
tLOCK
Maximum PLL Lock Time
1
10
ms
tjitter
Period Deviation (Peak-to-Peak)3
3.
See APPLICATIONS INFORMATION for additional information.
±25
±65
ps
N = 2,4,8; Note2
N = 1; Note2
ts
Setup Time
S_DATA to S_CLOCK
S_CLOCK to S_LOAD
M, N to P_LOAD
20
ns
th
Hold Time
S_DATA to S_CLOCK
M, N to P_LOAD
20
ns
tpwMIN
Minimum Pulse Width
S_LOAD
P_LOAD
50
ns
Note2
tr, tf
Output Rise/Fall Time
300
800
ps
Note2
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