GENERAL DESCRIPTION
The 843202I is a 2 output LVPECL Synthesizer optimized to generate
Gigabit Ethernet and SONET reference clock frequencies and is
a member of the family of high performance clock solutions from
IDT. Using a 19.44MHz and 25MHz, 18pF parallel resonant crystal,
155.52MHz and 156.25MHz frequencies can be generated. The part
also allows the use of a recovered clock at QB output. The 843202I
uses IDT’s FemtoClockTM low phase noise VCO technology and can
achieve 1ps or lower typical RMS phase jitter. The 843202I is
packaged in a 32-pin LQFP package.

FEATURES
• Two 3.3V LVPECL outputs
• Selectable crystal oscillator interface or one differential recovered clock inputs
• Supports the following output frequencies: 155.52MHz and
156.25MHz
• VCO range: 560MHz - 680MHz
• RMS phase jitter @ 155.52MHz, using a 19.44MHz crystal
(12kHz – 1.3MHz): 0.86ps (typical)
• RMS phase jitter @ 156.25MHz, using a 25MHz crystal
(1.875MHz –- 20MHz): 0.56ps (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 8T49N242