General Description

The 844003EGI-01 is a 2 differential output LVDS Synthesizer

designed to generate Ethernet reference clock frequencies. Using a

19.53125MHz or 25MHz, 18pF parallel resonant crystal, the

following frequencies can be generated based on the settings of 2

frequency select pins DIV_SEL[1:0]): 312.5MHz, 156.25MHz, and

125MHz. The 844003EI-01 is packaged in a small 24-pin TSSOP

package.

Features

• Two LVDS output pairs

• Using a 19.53125MHz or 25MHz crystal, the outputs can be set

for 312.5MHz, 156.25MHz or 125MHz

• Selectable crystal oscillator interface or LVCMOS/LVTTL

single-ended input

• VCO range: 490MHz - 680MHz

• RMS phase jitter @ 156.25MHz, (1.875MHz - 20MHz):

0.37ps (typical)

• Full 3.3V supply mode

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

• Available in lead-free (RoHS 6) package

• For functional replacement part use 8T49N241