GENERAL DESCRIPTION
The 843023I is a Gigabit Ethernet Clock Generator and a member of the HiPerClocksTM family of high performance devices from
IDT. The 843023I uses a 25MHz crystal to synthesize 250MHz.
The 843023I has excellent phase jitter performance, over the
1.875MHz – 20MHz integration range. The 843023I is packaged
in a small 8-pin TSSOP, making it ideal for use in systems with
limited board space.

FEATURES
• One differential 3.3V or 2.5V LVPECL output
• Crystal oscillator interface designed for 25MHz,
18pF parallel resonant crystal
• Output frequency range: 240MHz - 320MHz
• VCO range: 480MHz - 640MHz
• RMS phase jitter @ 250MHz, using a 25MHz crystal
(1.875MHz - 20MHz): 0.39ps (typical)
Phase noise:
Offset Noise Power
100Hz ..................-86.3 dBc/Hz
1kHz ................-114.6 dBc/Hz
10kHz ................-125.6 dBc/Hz
100kHz ................-126.0 dBc/Hz
• Full 3.3V and 2.5V operating supply
• -40°C to 85°C ambient operating temperature
• Available in lead-free (RoHS 6) package