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參數(shù)資料
| 型號(hào)： | MC12439FNR2 |
| 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)： | 10/11頁 |
| 文件大小： | 128K |
| 代理商： | MC12439FNR2 |
4
MC12439
MOTOROLA ADVANCED CLOCK DRIVERS DEVICE DATA
395
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
Note 1.
MHz
FMAXO
Maximum Output Frequency
VCO (Internal)
FOUT
400
50
900
800
MHz
Note 3.
tLOCK
Maximum PLL Lock Time
1
10
ms
tjitter
Period Deviation (Peak–to–Peak) (Note 2.)
±25
±65
ps
N = 2,4,8; Note 3.
N = 1; Note 3.
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
Note 3.
tr, tf
Output Rise/Fall Time
300
800
ps
Note 3.
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 the programming section in this data sheet for more details.
2. See Applications Information section for additional information.
3. 50
to VCC – 2.0 V pulldown.
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