MPC9449

更新时间： 2024-09-22 22:51:11

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		/
页数	文件大小	规格书
12页	294K
描述
3.3V / 2.5 V 1:15 PECL/LVCMOS

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MPC9449 数据手册

Freescale Semiconductor, Inc.

SEMICONDUCTOR TECHNICAL DATA

Order Number: MPC9449/D

Rev 1, 08/2002

The MPC9449 is a 3.3V or 2.5V compatible, 1:15 clock fanout buffer

targeted for high performance clock tree applications. With output

frequencies up to 200 MHz and output skews less than 200 ps the device

meets the needs of the most demanding clock applications.

3.3V/2.5V 1:15

Features

• 15 LVCMOS compatible clock outputs

PECL/LVCMOS

• Two selectable LVCMOS and one differential LVPECL compatible clock

inputs

CLOCK FANOUT BUFFER

• Selectable output frequency divider (divide-by-one and divide-by-two)

• Maximum clock frequency of 200 MHz

• Maximum clock skew of 200 ps

• High-impedance output control

• 3.3V or 2.5V power supply

• Drives up to 30 series terminated clock lines

• Ambient temperature range –40°C to +85°C

• 52 lead LQFP packaging

• Supports clock distribution in networking, telecommunication and

computing applications

FA SUFFIX

52 LEAD LQFP PACKAGE

CASE 848D

• Pin and function compatible to MPC949

Functional Description

The MPC9449 is specifically designed to distribute LVCMOS

compatible clock signals up to a frequency of 200 MHz. The device has

15 identical outputs, organized in 4 output banks. Each output bank

provides a retimed or frequency divided copy of the input signal with a

near zero skew. The output buffer supports driving of 50Ω 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 LVCMOS compatible clock inputs are available. This feature supports redundant differential clock sources. In

addition, the MPC9449 accepts one differential PECL clock signal. The DSELx pins choose between division of the input

reference frequency by one or two. The frequency divider can be set individually for each of the four output banks. 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 MPC9449 is pin and function compatible

but performance-enhanced to the MPC949. The device is packaged in a 52-lead LQFP package.

For More Information On This Product,

Motorola, Inc. 2002

Go to: www.freescale.com

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与MPC9449相关器件

型号	品牌	获取价格	描述	数据表
MPC9449AER2	IDT	获取价格	9449 SERIES, LOW SKEW CLOCK DRIVER, 15 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP52, PLAST
MPC9449FA	IDT	获取价格	Low Skew Clock Driver, 9449 Series, 15 True Output(s), 0 Inverted Output(s), ECL, PQFP52,
MPC9449FA	MOTOROLA	获取价格	Low Skew Clock Driver, 15 True Output(s), 0 Inverted Output(s), ECL, PQFP52, PLASTIC, LQFP
MPC9449FAR2	IDT	获取价格	Low Skew Clock Driver, 9449 Series, 15 True Output(s), 0 Inverted Output(s), ECL, PQFP52,
MPC9449FAR2	MOTOROLA	获取价格	LOW SKEW CLOCK DRIVER, 15 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP52, PLASTIC, LQFP-52
MPC94551	FREESCALE	获取价格	Low Voltage 1:4 CMOS Clock Buffer
MPC94551D	FREESCALE	获取价格	Low Voltage 1:4 CMOS Clock Buffer
MPC94551DR2	FREESCALE	获取价格	Low Voltage 1:4 CMOS Clock Buffer
MPC94551EF	FREESCALE	获取价格	Low Voltage 1:4 CMOS Clock Buffer
MPC94551EFR2	FREESCALE	获取价格	Low Voltage 1:4 CMOS Clock Buffer

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