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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

  • Four differential LVDS outputs at 125MHz
    • Two LVCMOS/LVTTL single-ended outputs at 125MHz
    • Two LVCMOS/LVTTL single-ended outputs at 25MHz
  • Selectable crystal oscillator interface or LVCMOS/LVTTL single-ended input
  • RMS phase jitter at 125MHz, using a 25MHz crystal
    (1.875MHz to 20MHz): 0.5ps (typical)
  • Full 2.5V supply mode
  • 0 °C to 70 °C ambient operating temperature
  • Lead-free (RoHS 6) packaging

Description

The 8440258-46 is an 8-output synthesizer optimized to generate Ethernet clocks. The device will generate 125MHz and 25MHz clocks from a 25MHz crystal with a very good jitter performance. The 8440258-46 uses Renesas' third-generation low phase noise VCO technology and is packaged in a small, 5mm x 5mm VFQFN package.

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