GENERAL DESCRIPTION
The 843001 is a Fibre Channel Clock Generator and a member
of the family of high performance devices from IDT. The 843001
uses either a 26.5625MHz or a 23.4375 crystal to synthesize
106.25MHz, 187.5MHz or 212.5MHz, using the FREQ_SEL pin.
The 843001 has excellent <1ps phase jitter performance, over the
637kHz – 10MHz integration range. The 843001 is packaged in a
small 8-pin TSSOP, making it ideal for use in systems with limited
board space.

FEATURES
• One differential 3.3V LVPECL output
• Crystal oscillator interface designed for 23.4375MHz or
26.5625MHz, 18pF parallel resonant crystal
• Selectable 106.25MHz, 187.5MHz or 212.5MHz
output frequency
• VCO range: 560MHz - 680MHz
• RMS phase jitter @ 106.255MHz, using a 26.5625MHz crystal
(637kHz - 10MHz): 0.74ps (typical)
• RMS phase noise at 106.25MHz
Phase noise:
Offset Noise Power
100Hz ................-95.2 dBc/Hz
1KHz ..............-118.7 dBc/Hz
10KHz ..............-129.1 dBc/Hz
100KHz ..............-129.6 dBc/Hz
• 3.3V operating supply
• -30°C to 85°C ambient operating temperature
• Available in lead-free (RoHS 6) package