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MPC9447

3.3V/2.5V 1:9 LVCMOS Clock Fanout Buffer

Integrated Device Technology 

MOTOROLA

SEMICONDUCTOR

TECHNFICreALesDcATaAle

Semiconductor,

Inc.

Order Number: MPC9447/D

DAReTvA2, 0S4H/20E03ET

3.3V/2.5V 1:9 LVCMOS Clock Fanout

Buffer

3.3V/2.5V 1:9 LVCMOS Clock

MPC9447

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.

Features

• 9 LVCMOS Compatible Clock Outputs

• 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

Computer Applications

• Pin and Function Compatible to MPC947

3.3 V/2.5 V LVCMOS 1:9

CLOCK FANOUT BUFFER

FA SUFFIX

32--LEAD LQFP PACKAGE

CASE 873A

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.

IDT™ 3.3V/2.5V 1:9 LVCMOS Clock Fanout Buffer

Freescale Timing Solutions Organization has been acquired by Integrated Device Technology, Inc

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MPC9447

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