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參數資料
| 型號： | MPC9448ACR2 |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 時鐘及定時 |
| 英文描述： | 9448 SERIES, LOW SKEW CLOCK DRIVER, 12 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32 |
| 封裝： | PLASTIC, LQFP-32 |
| 文件頁數： | 1/10頁 |
| 文件大小： | 395K |
| 代理商： | MPC9448ACR2 |
6
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order Number: MPC9448/D
Rev 3, 04/2003
MOTOROLA ADVANCED CLOCK DRIVERS DEVICE DATA
581
3.3V/2.5V LVCMOS 1:12 Clock
Fanout Buffer
The MPC9448 is a 3.3V or 2.5V compatible, 1:12 clock fanout buffer
targeted for high performance clock tree applications. With output fre-
quencies up to 350 MHz and output skews less than 150 ps, the device
meets the needs of most demanding clock applications.
12 LVCMOS compatible clock outputs
Selectable LVCMOS and differential LVPECL compatible clock inputs
Maximum clock frequency of 350 MHz
Maximum clock skew of 150 ps
Synchronous output stop in logic low state eliminates output runt pulses
High–impedance output control
3.3V or 2.5V power supply
Drives up to 24 series terminated clock lines
Ambient temperature range –40°C to +85°C
32–Lead LQFP packaging
Supports clock distribution in networking, telecommunication and com-
puting applications
Pin and function compatible to MPC948
Functional Description
The MPC9448 is specifically designed to distribute LVCMOS compat-
ible clock signals up to a frequency of 350 MHz. Each output provides a
precise copy of the input signal with a near zero skew. The outputs buff-
ers support 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, independent clock inputs are available, providing support of LVCMOS and differential LVPECL clock distribu-
tion systems. The MPC9448 CLK_STOP control is synchronous to the falling edge of the input clock. It allows the start and stop
of the output clock signal only in a logic low state, thus eliminating potential output runt pulses. 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 MPC9448 is pin and function compatible
but performance–enhanced to the MPC948.
LOW VOLTAGE
3.3V/2.5V LVCMOS 1:12
CLOCK FANOUT BUFFER
MPC9448
FA SUFFIX
32–LEAD LQFP PACKAGE
CASE 873A
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MPC9448D | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:3.3V/2.5V LVCMOS 1:12 Clock Fanout Buffer |
| MPC9448FA | 功能描述:時鐘緩沖器 2.5 3.3V 275MHz Clock Generator RoHS:否 制造商:Texas Instruments 輸出端數量: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 |
| MPC9448FAR2 | 功能描述:IC CLOCK BUFFER MUX 2:12 32-LQFP RoHS:否 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘緩沖器，驅動器 系列:- 標準包裝:1 系列:HiPerClockS™ 類型:扇出緩沖器（分配），多路復用器 電路數: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 供應商設備封裝:32-TQFP（7x7） 包裝:- 其它名稱:800-1923-6 |
| MPC9449 | 制造商:MOTOROLA 制造商全稱: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 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘緩沖器，驅動器 系列:- 標準包裝:1 系列:HiPerClockS™ 類型:扇出緩沖器（分配），多路復用器 電路數: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 供應商設備封裝:32-TQFP（7x7） 包裝:- 其它名稱:800-1923-6 |
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