GENERAL DESCRIPTION
The 843003i-01 is a 3 differential output LVPECL 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 4 frequency select pins (DIV_SEL[A1:A0], DIV_SEL[B1:B0]):
625MHz, 312.5MHz, 156.25MHz, and 125MHz. The 843003I-01
has 2 output banks, Bank A with 1 differential LVPECL output pair
and Bank B with 2 differential LVPECL output pairs.
The two banks have their own dedicated frequency select pins and
can be independently set for the frequencies mentioned above.
The 843003i-01 uses ICS’ 3rd generation low phase noise VCO
technology and can achieve 1ps or lower typical rms phase jitter,
easily meeting Ethernet jitter requirements. The 843003i-01 is
packaged in a small 24-pin TSSOP package.

FEATURES
• Three 3.3V LVPECL outputs on two banks, A Bank with one
LVPECL pair and B Bank with two LVPECL output pairs
• Using a 19.53125MHz or 25MHz crystal, the two output banks
can be independently set for 625MHz, 312.5MHz, 156.25MHz
or 125MHz
• Selectable crystal oscillator interface or LVCMOS/LVTTL single-ended input
• VCO range: 490MHz to 680MHz
• RMS phase jitter @ 156.25MHz (1.875MHz - 20MHz):
0.53ps (typical)
• 3.3V output supply mode
• -40°C to 85°C ambient operating temperature
• Available in lead-free RoHS compliant package