Datasheet > MPC9447

MPC9447

更新时间： 2024-11-20 22:51:11

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		时钟
页数	文件大小	规格书
12页	233K
描述
3.3V/2.5V 1:9 LVCMOS Clock Fanout Buffer

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MPC9447 数据手册

MOTOROLA

Order Number: MPC9447/D

Rev 2, 04/2003

Freescale Semiconductor, Inc.

SEMICONDUCTOR TECHNICAL DATA

3.3V/2.5V 1:9 LVCMOS Clock

Fanout Buffer

The MPC9447 is a 3.3V or 2.5V compatible, 1:9 clock fanout buffer

targeted for high performance clock tree applications. With output

frequencies up to 350 MHz and output skews less than 150 ps, the device

meets the needs of most demanding clock applications.

MPC9447

Features

• 9 LVCMOS Compatible Clock Outputs

LOW VOLTAGE

3.3 V/2.5 V LVCMOS 1:9

CLOCK FANOUT BUFFER

• 2 Selectable, LVCMOS Compatible 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 18 Series Terminated Clock Lines

• Ambient Temperature Range --40_C to +85_C

• 32 Lead LQFP Packaging

• Supports Clock Distribution in Networking, Telecommunications, and

FA SUFFIX

32--LEAD LQFP PACKAGE

CASE 873A

Computer Applications

• Pin and Function Compatible to MPC947

Functional Description

MPC9447 is specifically designed to distribute LVCMOS compatible

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 buffers

support driving of 50Ω terminated transmission lines on the incident

edge: each is capable of driving either one parallel terminated or two

series terminated transmission lines.

Two selectable independent LVCMOS compatible clock inputs are available, providing support of redundant clock source

systems. The MPC9447 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 MPC9447 is pin and function compatible

but performance--enhanced to the MPC947.

For More Information On This Product,

Go to: www.freescale.com

12 3 4 5 6 7...12

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与MPC9447相关器件

型号	品牌	获取价格	描述	数据表
MPC9447ACR2	IDT	获取价格	9447 SERIES, LOW SKEW CLOCK DRIVER, 9 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32, PLASTI
MPC9447D	MOTOROLA	获取价格	3.3V/2.5V 1:9 LVCMOS Clock Fanout Buffer
MPC9447FA	MOTOROLA	获取价格	LOW SKEW CLOCK DRIVER, 9 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32, PLASTIC, LQFP-32
MPC9447FAR2	IDT	获取价格	Low Skew Clock Driver, 9447 Series, 9 True Output(s), 0 Inverted Output(s), ECL, PQFP32, P
MPC9447FAR2	NXP	获取价格	9447 SERIES, LOW SKEW CLOCK DRIVER, 9 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32, PLASTI
MPC9448	MOTOROLA	获取价格	3.3V/2.5V LVCMOS 1:12 Clock Fanout Buffer
MPC9448AC	NXP	获取价格	9448 SERIES, LOW SKEW CLOCK DRIVER, 12 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32, LEAD
MPC9448CAR2	IDT	获取价格	Clock Driver
MPC9448D	MOTOROLA	获取价格	3.3V/2.5V LVCMOS 1:12 Clock Fanout Buffer
MPC9448FA	IDT	获取价格	Low Skew Clock Driver, 9448 Series, 12 True Output(s), 0 Inverted Output(s), ECL, PQFP32,

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