GENERAL DESCRIPTION
The 843002I-01 is a 2 output LVPECL synthesizer optimized to
generate Ethernet reference clock frequencies. Using a 25MHz
18pF parallel resonant crystal, the following frequencies can be
generated based on the 2 frequency select pins (F_SEL[1:0]):
156.25MHz, 125MHz, and 62.5MHz. The 843002I-01 uses
IDT’s FemtoClock® low phase noise VCO technology and can
achieve 1ps or lower typical rms phase jitter, easily meeting
Ethernetjitter requirements. The 843002I-01 is packaged in a
small 20-pin TSSOP package.

FEATURES
• Two 3.3V or 2.5V LVPECL outputs
• Selectable crystal oscillator interface
or LVCMOS/LVTTL single-ended input
• Supports the following output frequencies:
156.25MHz, 125MHz and 62.5MHz
• VCO range: 560MHz - 680MHz
• RMS phase jitter @ 156.25MHz, using a 25MHz crystal
(1.875MHz-20MHz): 0.55ps (typical)
• Output skew: 30ps (maximum)
• Supply Voltage Modes
Core/Outputs
3.3/3.3
2.5/2.5
• -40°C to 85°C ambient operating temperature
• Available in lead-free RoHS-compliant package