GENERAL DESCRIPTION
T h e 8 4 3 0 0 2 I i s a 2 o u t p u t LV P E C L s y n t h e s i ze r
optimized to generate Fibre Channel reference
clock frequencies and is a member of thefamily of high
performance clock solutions from IDT. Using a 26.5625MHz,
18pF parallel resonant crystal, the following frequencies
can be generated based on the 2 frequency select pins (F_
SEL[1:0]): 212.5MHz, 187.5MHz, 159.375MHz, 106.25MHz, and
53.125MHz. The 843002I uses IDT’s FemtoClockTM low
phase noise VCO technology and can achieve 1ps or lower
typical rms phase jitter, easily meeting Fibre Channel jitter
requirements. The 843002I 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: 212.5MHz,
187.5MHz, 159.375MHz, 106.25MHz and 53.125MHz
• VCO range: 560MHz - 680MHz
• RMS phase jitter @212.5MHz (2.55MHz - 20MHz):
0.50ps (typical)
• Full 3.3V or 2.5V supply modes
• -40°C to 85°C ambient operating temperature
• Available in lead-free RoHS compliant package
• For functional replacement part use 8T49N242