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參數(shù)資料
| 型號(hào)： | ASM2I9942C-32-ET |
| 廠商： | ALLIANCE SEMICONDUCTOR CORP |
| 元件分類： | 時(shí)鐘及定時(shí) |
| 英文描述： | Low Voltage 1:18 Clock Distribution Chip |
| 中文描述： | 9942 SERIES, LOW SKEW CLOCK DRIVER, 18 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32 |
| 封裝： | 7 X 7 MM, 0.80 MM PITCH, TQFP-32 |
| 文件頁(yè)數(shù)： | 6/10頁(yè) |
| 文件大小： | 431K |
| 代理商： | ASM2I9942C-32-ET |
May 2005
rev 0.2
ASM2I9942C
Low Voltage 1:18 Clock Distribution Chip
6 of 10
Notice: The information in this document is subject to change without notice.
T
J
,MAX should be selected according to the MTBF
system requirements and Table 8. R
thja
can be derived
from Table 9. The R
thja
represent data based on 1S2P
boards, using 2S2P boards will result in a lower thermal
impedance than indicated below.
Table 9. Thermal package impedance of the
32LQFP
Convection,
LFPM
R
thja
(1P2S
board),
°
C/W
R
thja
(2P2S
board),
°
C/W
Still air
86
61
100 lfpm
76
56
200 lfpm
71
54
300 lfpm
68
53
400 lfpm
66
52
500 lfpm
60
49
If the calculated maximum frequency is below 350 MHz, it
becomes the upper clock speed limit for the given
application conditions. The following eight derating charts
describe the safe frequency operation range for the
ASM2I9942C. The charts were calculated for a maximum
tolerable die junction temperature of 110
°
C (120
°
C),
corresponding to an estimated MTBF of 9.1 years
(4 years), a supply voltage of 3.3V and series terminated
transmission line or capacitive loading. Depending on a
given set of these operating conditions and the available
device convection a decision on the maximum operating
frequency can be made.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ASM2I9942C-32-LR | Low Voltage 1:18 Clock Distribution Chip |
| ASM2I9942C-32-LT | Low Voltage 1:18 Clock Distribution Chip |
| ASM2I9942P | Low Voltage 1:18 Clock Distribution Chip |
| ASM2I9942P-32-ER | Low Voltage 1:18 Clock Distribution Chip |
| ASM2I9942P-32-ET | Low Voltage 1:18 Clock Distribution Chip |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ASM2I9942C-32-LR | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Low Voltage 1:18 Clock Distribution Chip |
| ASM2I9942C-32-LT | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Low Voltage 1:18 Clock Distribution Chip |
| ASM2I9942CG-32-ER | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Low Voltage 1:18 Clock Distribution Chip |
| ASM2I9942CG-32-ET | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Low Voltage 1:18 Clock Distribution Chip |
| ASM2I9942CG-32-LR | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Low Voltage 1:18 Clock Distribution Chip |
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