General Description

The 843251-04 is a 10Gb/12Gb Ethernet Clock Generator. The

843251-04 can synthesize 10 Gigabit Ethernet and 12 Gigabit

Ethernet with a 25MHz crystal. It can also generate SATA and 10Gb

Fibre Channel reference clock frequencies with the appropriate

choice of crystals. The 843251-04 has excellent phase jitter

performance and is packaged in a small 8-pin TSSOP, making it

ideal for use in systems with limited board space.

Features

• One differential 3.3V LVPECL output

• Crystal oscillator interface designed for

18pF parallel resonant crystal

• Crystal input frequency range: 19.33MHz – 30MHz

• Output frequency range: 145MHz – 187.5MHz

• VCO range: 580MHz – 750MHz

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

0.39ps (typical)

• Full 3.3V supply mode

• 0°C to 70°C ambient operating temperature

• Available in lead-free (RoHS 6) package