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Renesas Electronics Corporation

Renesas’ Timing product portfolio has been acquired by SiTime.

Datasheets, documentation, and sample orders remain available on Renesas.com through late 2026. For new designs, purchasing, support, and product inquiries, visit SiTime.com or send an email to [email protected]. Full transition to SiTime is expected by late 2026.

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

Description

The 843023 is a Gigabit Ethernet clock generator that 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.

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