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參數(shù)資料
| 型號(hào)： | MPC9446 |
| 廠商： | Motorola, Inc. |
| 英文描述： | 2.5V and 3.3V LVCMOS Clock Fanout Buffer |
| 中文描述： | 2.5V和3.3V的LVCMOS時(shí)鐘扇出緩沖器 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大小： | 217K |
| 代理商： | MPC9446 |
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order Number: MPC9446/D
Rev 1, 03/2002
Motorola, Inc. 2002
2.5V and 3.3V LVCMOS Clock
Fanout Buffer
The MPC9446 is a 2.5V and 3.3V compatible 1:10 clock distribution
buffer designed for low-voltage mid-range to high-performance telecom,
networking and computing applications. Both 3.3V, 2.5V and dual supply
voltages are supported for mixed-voltage applications. The MPC9446
offers 10 low-skew outputs and 2 selectable inputs for clock redundancy.
The outputs are configurable and support 1:1 and 1:2 output to input
frequency ratios. The MPC9446 is specified for the extended temperature
range of --40
°
C to 85
°
C.
Features
Configurable 10 outputs LVCMOS clock distribution buffer
Compatible to single, dual and mixed 3.3V/2.5V voltage supply
Wide range output clock frequency up to 250 MHz
Designed for mid-range to high-performance telecom, networking and
computer applications
Supports applications requiring clock redundancy
Max. output skew of 200 ps (150 ps within one bank)
Selectable output configurations per output bank
Tristable outputs
32 ld LQFP package
Ambient operating temperature range of --40 to 85
°
C
Functional Description
The MPC9446 is a full static fanout buffer design supporting clock
frequencies up to 250 MHz. The signals are generated and retimed
on-chip to ensure minimal skew between the three output banks. Two
independent LVCMOS compatible clock inputs are available. This feature
supports redundant clock sources or the addition of a test clock into the
system design. Each of the three output banks can be individually
supplied by 2.5V or 3.3V supporting mixed voltage applications. The
FSELx pins choose between division of the input reference frequency by
one or two. The frequency divider can be set individually for each of the
three output banks. The MPC9446 can be reset and the outputs are
disabled by deasserting the MR/OE pin (logic high state). Asserting
MR/OE will enable the outputs.
All inputs accept LVCMOS signals while the outputs provide LVCMOS compatible levels with the capability to drive terminated
50
transmission lines. Please consult the MPC9456 specification for a 1:10 mixed voltage buffer with LVPECL compatible
inputs. For series terminated transmission lines, each of the MPC9446 outputs can drive one or two traces giving the devices an
effective fanout of 1:20. The device is packaged in a 7x7 mm
2
32-lead LQFP package.
FA SUFFIX
LQFP PACKAGE
CASE 873A
MPC9446
LOW VOLTAGE SINGLE OR
DUAL SUPPLY 2.5V AND 3.3V
LVCMOS CLOCK
DISTRIBUTION BUFFER
F
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 |
|---|---|
| MPC9446AC | 功能描述:時(shí)鐘緩沖器 2.5 3.3V 275MHz Clock Generator 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 |
| MPC9446ACR2 | 功能描述:時(shí)鐘驅(qū)動(dòng)器及分配 FSL 1-10 LVCMOS Fanout Buffer 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 |
| MPC9446FA | 功能描述:時(shí)鐘緩沖器 2.5 3.3V 250MHz Clock Generator 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 |
| MPC9446FAR2 | 功能描述:時(shí)鐘驅(qū)動(dòng)器及分配 FSL 1-10 LVCMOS Fanout Buffer 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 |
| MPC9447 | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:3.3V/2.5V 1:9 LVCMOS Clock Fanout Buffer |
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