MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

Order Number: MC100ES6254/D

Rev. 3, 05/2004

© Motorola, Inc. 2004

REV 3

2.5/3.3V Differential LVPECL

2x2 Clock Switch and

Fanout Buffer

The Motorola MC100ES6254 is a bipolar monolithic differential 2x2 clock

switch and fanout buffer. Designed for most demanding clock distribution sys-

tems, the MC100ES6254 supports various applications that require to drive pre-

cisely aligned clock signals. The device is capable of driving and switching dif-

ferential LVPECL signals. Using SiGe technology and a fully differential archi-

tecture, the device offers superior digital signal characteristics and very low

clock skew error. Target applications for this clock driver are high performance

clock/data switching, clock distribution or data loopback in computing, network-

ing and telecommunication systems.

Features:

• Fully differential architecture from input to all outputs

• SiGe technology supports near-zero output skew

• LVPECL compatible differential clock inputs and outputs

• LVCMOS compatible control inputs

• Single 3.3 V or 2.5 V supply

• Synchronous output enable eliminating output runt pulse generation and

metastability

• Standard 32 lead LQFP package

• Industrial temperature range

Functional Description

MC100ES6254 is designed for very skew critical differential clock distribution systems and supports clock frequencies from DC

up to 3.0 GHz. Typical applications for the MC100ES6254 are primary clock distribution, switching and loopback systems of

high-performance computer, networking and telecommunication systems, as well as on-board clocking of OC-3, OC-12 and OC-48

speed communication systems. Primary purpose of the MC100ES6254 is high-speed clock switching applications. In addition, the

MC100ES6254 can be configured as single 1:6 or dual 1:3 LVPECL fanout buffer for clock signals, or as loopback device in high-

speed data applications.

The MC100ES6254 can be operated from a 3.3 V or 2.5 V positive supply without the requirement of a negative supply line.

1

The device is functional up to 3 GHz and characterized up to 2.7 GHz.

FA SUFFIX

32-LEAD LQFP PACKAGE

CASE 873A

MC100ES6254

2.5/3.3 V DIFFERENTIAL

LVPECL 2x2

CLOCK SWITCH

AND FANOUT BUFFER

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com