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| 型号： | MPC942PFAR2 |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 时钟及定时 |
| 英文描述： | 942 SERIES, LOW SKEW CLOCK DRIVER, 18 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32 |
| 封装： | 7 X 7 MM, 0.80 MM PITCH, PLASTIC, LQFP-32 |
| 文件页数： | 1/4页 |
| 文件大小： | 254K |
| 代理商： | MPC942PFAR2 |
6
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order this document
by MPC942P/D
MOTOROLA ADVANCED CLOCK DRIVERS DEVICE DATA
551
Low Voltage 1:18 Clock
Distribution Chip
The MPC942 is a 1:18 low voltage clock distribution chip with 2.5V or
3.3V LVCMOS output capabilities. The device is offered in two versions;
the MPC942C has an LVCMOS input clock while the MPC942P has a
LVPECL input clock. The 18 outputs are 2.5V or 3.3V LVCMOS compat-
ible and feature the drive strength to drive 50
series or parallel termi-
nated transmission lines. With output–to–output skews of 200ps, the
MPC942 is ideal as a clock distribution chip for the most demanding of
synchronous systems. The 2.5V outputs also make the device ideal for
supplying clocks for a high performance Pentium II
microprocessor
based design.
LVPECL Clock Input
2.5V LVCMOS Outputs for Pentium II Microprocessor Support
200ps Maximum Targeted Output–to–Output Skew
Maximum Output Frequency of 250MHz @ 3.3 VCC
32–Lead LQFP Packaging
Single 3.3V or 2.5V Supply
With a low output impedance (
≈12), in both the HIGH and LOW logic
states, the output buffers of the MPC942 are ideal for driving series termi-
nated transmission lines. With an output impedance of 12
the MPC942
can drive two series terminated transmission lines from each output. This
capability gives the MPC942 an effective fanout of 1:36. The MPC942
provides enough copies of low skew clocks for most high performance
synchronous systems.
The differential LVPECL inputs of the MPC942P allow the device to interface directly with a LVPECL fanout buffer like the
MC100EP111 to build very wide clock fanout trees or to couple to a high frequency clock source. The OE pins will place the
outputs into a high impedance state. The OE pin has an internal pullup resistor.
The MPC942 is a single supply device. The VCC power pins require either 2.5V or 3.3V. The 32–lead LQFP package was
chosen to optimize performance, board space and cost of the device. The 32–lead LQFP has a 7x7mm body size with a
conservative 0.8mm pin spacing.
Pentium II is a trademark of Intel Corporation.
Rev 1
MPC942P
LOW VOLTAGE
1:18 CLOCK
DISTRIBUTION CHIP
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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相关PDF资料 |
PDF描述 |
|---|---|
| MPC9443AE | 9443 SERIES, LOW SKEW CLOCK DRIVER, 16 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP48 |
| MPC9446FAR2 | 9446 SERIES, LOW SKEW CLOCK DRIVER, 10 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32 |
| MPC9446FAR2 | 9446 SERIES, LOW SKEW CLOCK DRIVER, 10 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32 |
| MPC952FAR2 | LVCMOS/LVTTL SERIES, PLL BASED CLOCK DRIVER, 11 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32 |
| MPC952FA | 952 SERIES, PLL BASED CLOCK DRIVER, 11 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MPC9443 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:2.5V AND 3.3V LVCMOS CLOCK FANOUT BUFFER |
| MPC9443AE | 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 |
| MPC9443AER2 | 功能描述:时钟驱动器及分配 FSL 1-16 LVCMOS Fanout Buffer RoHS:否 制造商:Micrel 乘法/除法因子:1:4 输出类型:Differential 最大输出频率:4.2 GHz 电源电压-最大: 电源电压-最小:5 V 最大工作温度:+ 85 C 封装 / 箱体:SOIC-8 封装:Reel |
| MPC9443FA | 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 |
| MPC9443FAR2 | 功能描述:时钟驱动器及分配 FSL 1-16 LVCMOS Fanout Buffer RoHS:否 制造商:Micrel 乘法/除法因子:1:4 输出类型:Differential 最大输出频率:4.2 GHz 电源电压-最大: 电源电压-最小:5 V 最大工作温度:+ 85 C 封装 / 箱体:SOIC-8 封装:Reel |
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