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| 型号： | MPC9446FAR2 |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟及定时 |
| 英文描述： | 9446 SERIES, LOW SKEW CLOCK DRIVER, 10 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32 |
| 封装： | 7 X 7 MM, PLASTIC, LQFP-32 |
| 文件页数： | 1/7页 |
| 文件大小： | 298K |
| 代理商： | MPC9446FAR2 |
6
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order Number: MPC9446/D
Rev 1, 03/2002
MOTOROLA ADVANCED CLOCK DRIVERS DEVICE DATA
567
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 of-
fers 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 fre-
quency 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 fre-
quencies up to 250 MHz. The signals are generated and retimed on-chip
to ensure minimal skew between the three output banks. Two indepen-
dent LVCMOS compatible clock inputs are available. This feature sup-
ports redundant clock sources or the addition of a test clock into the
system design. Each of the three output banks can be individually sup-
plied 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 en-
able 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 mm2 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
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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 |
|---|---|
| MPC9447 | 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:3.3V/2.5V 1:9 LVCMOS Clock Fanout Buffer |
| MPC9447AC | 功能描述:时钟缓冲器 2.5 3.3V 250MHz 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 |
| MPC9447ACR2 | 功能描述:时钟缓冲器 FSL 1-9 LVCMOS Fanout Buffer 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 |
| MPC9447D | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:3.3V/2.5V 1:9 LVCMOS Clock Fanout Buffer |
| MPC9447FA | 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 |
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