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參數(shù)資料
| 型號(hào)： | MPC9449 |
| 廠商： | Motorola, Inc. |
| 英文描述： | 3.3V / 2.5 V 1:15 PECL/LVCMOS |
| 中文描述： | 3.3 / 1點(diǎn)15分PECL的2.5伏/的LVCMOS |
| 文件頁數(shù)： | 1/12頁 |
| 文件大小： | 293K |
| 代理商： | MPC9449 |
SEMICONDUCTOR TECHNICAL DATA
Order Number: MPC9449/D
Rev 1, 08/2002
Motorola, Inc. 2002
"! "
The MPC9449 is a 3.3V or 2.5V compatible, 1:15 clock fanout buffer
targeted for high performance clock tree applications. With output
frequencies up to 200 MHz and output skews less than 200 ps the device
meets the needs of the most demanding clock applications.
Features
15 LVCMOS compatible clock outputs
Two selectable LVCMOS and one differential LVPECL compatible clock
inputs
Selectable output frequency divider (divide-by-one and divide-by-two)
Maximum clock frequency of 200 MHz
Maximum clock skew of 200 ps
High-impedance output control
3.3V or 2.5V power supply
Drives up to 30 series terminated clock lines
Ambient temperature range –40
°
C to +85
°
C
52 lead LQFP packaging
Supports clock distribution in networking, telecommunication and
computing applications
Pin and function compatible to MPC949
Functional Description
The MPC9449 is specifically designed to distribute LVCMOS
compatible clock signals up to a frequency of 200 MHz. The device has
15 identical outputs, organized in 4 output banks. Each output bank
provides a retimed or frequency divided copy of the input signal with a
near zero skew. The output buffer supports driving of 50
terminated
transmission lines on the incident edge: each output is capable of driving
either one parallel terminated or two series terminated transmission lines.
Two selectable LVCMOS compatible clock inputs are available. This feature supports redundant differential clock sources. In
addition, the MPC9449 accepts one differential PECL clock signal. The DSELx pins choose between division of the input
reference frequency by one or two. The frequency divider can be set individually for each of the four output banks. Applying the
OE control will force the outputs into high-impedance mode.
All inputs have an internal pull-up or pull-down resistor preventing unused and open inputs from floating. The device supports a
2.5V or 3.3V power supply and an ambient temperature range of –40
°
C to +85
°
C. The MPC9449 is pin and function compatible
but performance-enhanced to the MPC949. The device is packaged in a 52-lead LQFP package.
FA SUFFIX
52 LEAD LQFP PACKAGE
CASE 848D
3.3V/2.5V 1:15
PECL/LVCMOS
CLOCK FANOUT BUFFER
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MPC9449AC | 功能描述:IC CLK BUFF DVDR MUX 3:15 52LQFP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘緩沖器，驅(qū)動(dòng)器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:HiPerClockS™ 類型:扇出緩沖器（分配），多路復(fù)用器 電路數(shù):1 比率 - 輸入:輸出:2:18 差分 - 輸入:輸出:是/無 輸入:CML，LVCMOS，LVPECL，LVTTL，SSTL 輸出:LVCMOS，LVTTL 頻率 - 最大:250MHz 電源電壓:2.375 V ~ 3.465 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:32-LQFP 供應(yīng)商設(shè)備封裝:32-TQFP（7x7） 包裝:- 其它名稱:800-1923-6 |
| MPC9449AE | 功能描述:時(shí)鐘緩沖器 FSL 1-15 LVPECL/LVCM OS to LVCMOS Fanout RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:5 最大輸入頻率:40 MHz 傳播延遲（最大值）: 電源電壓-最大:3.45 V 電源電壓-最小:2.375 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LLP-24 封裝:Reel |
| MPC9449AER2 | 功能描述:時(shí)鐘驅(qū)動(dòng)器及分配 FSL 1-15 LVPECL/LVCM OS to LVCMOS Fanout RoHS:否 制造商:Micrel 乘法/除法因子:1:4 輸出類型:Differential 最大輸出頻率:4.2 GHz 電源電壓-最大: 電源電壓-最小:5 V 最大工作溫度:+ 85 C 封裝 / 箱體:SOIC-8 封裝:Reel |
| MPC9449FA | 功能描述:IC CLK BUFF DVDR MUX 3:15 52LQFP RoHS:否 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘緩沖器，驅(qū)動(dòng)器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:HiPerClockS™ 類型:扇出緩沖器（分配），多路復(fù)用器 電路數(shù):1 比率 - 輸入:輸出:2:18 差分 - 輸入:輸出:是/無 輸入:CML，LVCMOS，LVPECL，LVTTL，SSTL 輸出:LVCMOS，LVTTL 頻率 - 最大:250MHz 電源電壓:2.375 V ~ 3.465 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:32-LQFP 供應(yīng)商設(shè)備封裝:32-TQFP（7x7） 包裝:- 其它名稱:800-1923-6 |
| MPC9449FAR2 | 功能描述:IC CLK BUFF DVDR MUX 3:15 52LQFP RoHS:否 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘緩沖器，驅(qū)動(dòng)器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:HiPerClockS™ 類型:扇出緩沖器（分配），多路復(fù)用器 電路數(shù):1 比率 - 輸入:輸出:2:18 差分 - 輸入:輸出:是/無 輸入:CML，LVCMOS，LVPECL，LVTTL，SSTL 輸出:LVCMOS，LVTTL 頻率 - 最大:250MHz 電源電壓:2.375 V ~ 3.465 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:32-LQFP 供應(yīng)商設(shè)備封裝:32-TQFP（7x7） 包裝:- 其它名稱:800-1923-6 |
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