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| 型号： | MPC9448ACR2 |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 时钟及定时 |
| 英文描述： | 9448 SERIES, LOW SKEW CLOCK DRIVER, 12 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32 |
| 封装： | PLASTIC, LQFP-32 |
| 文件页数： | 9/10页 |
| 文件大小： | 395K |
| 代理商： | MPC9448ACR2 |
6
MPC9448
MOTOROLA ADVANCED CLOCK DRIVERS DEVICE DATA
588
TJ,MAX should be selected according to the MTBF system
requirements and Table 9. Rthja can be derived from Table 10.
The Rthja represent data based on 1S2P boards, using 2S2P
boards will result in a lower thermal impedance than indicated
below.
Table 10: Thermal package impedance of the 32ld LQFP
Convection, LFPM
Rthja (1P2S
board),
°C/W
Rthja (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 MPC9448. The charts
were calculated for a maximum tolerable die junction tempera-
ture of 110
°C (120°C), corresponding to an estimated MTBF of
9.1 years (4 years), a supply voltage of 3.3V and series termi-
nated transmission line or capacitive loading. Depending on a
given set of these operating conditions and the available de-
vice convection a decision on the maximum operating frequen-
cy can be made.
Figure 7. Maximum MPC9448 frequency, VCC = 3.3V, MTBF
9.1 years, driving series terminated transmission lines,
2s2p board
Figure 8. Maximum MPC9448 frequency, VCC = 3.3V,
MTBF 9.1 years, 4 pF load per line, 2s2p board
Figure 9. No maximum frequency limitation for VCC = 3.3V,
MTBF 4 years, driving series terminated transmission
lines, 2s2p board
Figure 10. Maximum MPC9448 frequency, VCC =
3.3V, MTBF 4 years, 4 pF load per line, 2s2p board
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MPC9448D | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:3.3V/2.5V LVCMOS 1:12 Clock Fanout Buffer |
| MPC9448FA | 功能描述:时钟缓冲器 2.5 3.3V 275MHz Clock Generator RoHS:否 制造商:Texas Instruments 输出端数量:5 最大输入频率:40 MHz 传播延迟（最大值）: 电源电压-最大:3.45 V 电源电压-最小:2.375 V 最大功率耗散: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LLP-24 封装:Reel |
| MPC9448FAR2 | 功能描述:IC CLOCK BUFFER MUX 2:12 32-LQFP RoHS:否 类别:集成电路 (IC) >> 时钟/计时 - 时钟缓冲器，驱动器 系列:- 标准包装:1 系列:HiPerClockS™ 类型:扇出缓冲器（分配），多路复用器 电路数:1 比率 - 输入:输出:2:18 差分 - 输入:输出:是/无 输入:CML，LVCMOS，LVPECL，LVTTL，SSTL 输出:LVCMOS，LVTTL 频率 - 最大:250MHz 电源电压:2.375 V ~ 3.465 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:32-LQFP 供应商设备封装:32-TQFP（7x7） 包装:- 其它名称:800-1923-6 |
| MPC9449 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:3.3V / 2.5 V 1:15 PECL/LVCMOS |
| MPC9449AC | 功能描述:IC CLK BUFF DVDR MUX 3:15 52LQFP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟缓冲器，驱动器 系列:- 标准包装:1 系列:HiPerClockS™ 类型:扇出缓冲器（分配），多路复用器 电路数:1 比率 - 输入:输出:2:18 差分 - 输入:输出:是/无 输入:CML，LVCMOS，LVPECL，LVTTL，SSTL 输出:LVCMOS，LVTTL 频率 - 最大:250MHz 电源电压:2.375 V ~ 3.465 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:32-LQFP 供应商设备封装:32-TQFP（7x7） 包装:- 其它名称:800-1923-6 |
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