GENERAL DESCRIPTION
The 843023 is a Gigabit Ethernet Clock Generator and a member of
the HiPerClocksTM family of high performance devices from IDT. The
843023 uses a 25MHz crystal to synthesize 250MHz. The 843023
has excellent phase jitter performance, over the 1.875MHz – 20MHz
integration range. The 843023 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 25MHz,
18pF parallel resonant crystal
• Output frequencies: 245MHz – 320MHz
• VCO range: 490MHz - 640MHz
• RMS phase jitter @ 250MHz, using a 25MHz crystal
(1.875MHz - 20MHz): 0.39ps (typical)
Offset Noise Power
100Hz ................-86.3 dBc/Hz
1kHz ..............-114.6 dBc/Hz
10kHz ..............-125.6 dBc/Hz
100kHz .................-126 dBc/Hz
• 3.3V operating supply
• 0°C to 70°C ambient operating temperature
• Available in lead-free (RoHS 6) package