GENERAL DESCRIPTION
The 840011 is a Fibre Channel Clock Generator and a member
of the family of high performance devices from IDT. The 840011
uses a 26.5625MHz or 25MHz crystal to syn-thesize 106.25MHz
or 100MHz respectively. The 840011 has excellent phase jitter
performance, from 637kHz – 10MHz integration range. The 840011
is packaged in a small 8-pin TSSOP, making it ideal for use in
systems with limited board space.

FEATURES
• One LVCMOS/LVTTL output, 7Ω output impedence
• Crystal oscillator interface designed for 26.5625MHz or 25MHz,
18pF parallel resonant crystal
• Output frequency: 106.25MHz (typical)
• VCO range: 560MHz to 680MHz
• RMS phase jitter @ 106.25MHz, using a 26.5625MHz crystal
(637KHz - 10MHz): 0.780ps (typical)
• RMS phase noise at 125MHz:
Offset Noise Power
100Hz ................-95.7 dBc/Hz
1kHz .................-121 dBc/Hz
10kHz .................-129 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
• Not Recommended for New Designs
• For drop in replacement part use 840N011i