GENERAL DESCRIPTION

The ICS8440259D-05 is a 9 output synthesizer optimized to

generate Gigabit and 10 Gigabit Ether-net. Using a 25MHz, 18pF

parallel resonant crystal, the device will generate 125MHz and

3.90625MHz clocks with mix-ed LVDS and LVCMOS/LVTTL output

levels. The ICS8440259D-05 uses IDT’s 3rd generations low phase

noise VCO technology and can achieve <1ps typical rms phase jitter,

easily meeting Ethernet jitter requirements. The ICS8440259D-05

is packaged in a small, 32-pin VFQFN package that is optimum for

applications with space limitations.

FEATURES

• Five differential LVDS outputs at 125MHz

Three LVCMOS/LVTTL single-ended outputs at 125MHz

One LVCMOS/LVTTL single-ended output at 3.90625MHz

• Selectable crystal oscillator interface or LVCMOS/LVTTL single-ended input and PLL bypass from a single select pin

• VCO range: 510MHz - 650MHz

• RMS phase jitter @ 125MHz, using a 25MHz crystal

(1.875MHz - 20MHz): 0.41ps (typical)

• Full 3.3V supply mode

• 0°C to 70°C ambient operating temperature

• Available in lead-free (RoHS 6) package