General Description

The 874208I is a high-performance differential LVDS clock divider

and fanout buffer. The device is designed for the frequency division

and signal fanout of high-frequency, low phase-noise clocks. The

874208I is characterized to operate from a 2.5V power supply.

Guaranteed output-to-output and part-to-part skew characteristics

make the 874208I ideal for those clock distribution applications

demanding well-defined performance and repeatability. The

integrated input termination resistors make interfacing to the

reference source easy and reduce passive component count. Each

output can be individually enabled or disabled in the high-impedance

state controlled by a I2C register. On power-up, all outputs are

enabled.

Features

• One differential input reference clock

• Differential pair can accept the following differential input

levels: LVDS, LVPECL, CML

• Integrated input termination resistors

• Eight LVDS outputs

• Selectable clock frequency division of ÷1, ÷2, ÷4 and ÷8

• Maximum input clock frequency: 500MHz

• LVCMOS interface levels for the control inputs

• Internal regulator for improved noise immunity

• Individual output enable/disabled by I2C interface

• Output skew: 28ps

• Additive Phase Jitter, RMS: 0.168ps (typical), 125MHz

• Low additive phase jitter

• Full 2.5V supply voltage

• Available in Lead-free (RoHS 6) package

• -40°C to 85°C ambient operating temperature