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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 LVDS output
  • Crystal oscillator interface, 18pF parallel resonant crystal (19.6MHz - 27.2MHz)
  • Output frequency range: 245MHz - 340MHz
  • VCO range: 490MHz - 680MHz
  • RMS phase jitter at 312.5MHz, using a 25MHz crystal (1.875MHz - 20MHz): 0.53ps (typical)
  • 3.3V or 2.5V operating supply
  • 0 °C to 70 °C ambient operating temperature
  • Available in both standard (RoHS 5) and lead-free (RoHS 6) packages

Description

The 844031-01 is an Ethernet clock generator and a member of the HiPerClocks™ family of high performance devices. The 844031-01 uses an 18pF parallel resonant crystal over the range of 19.6MHz - 27.2MHz. For Ethernet applications, a 25MHz crystal is used to generate 312.5MHz. The 844031-01 has excellent <1ps phase jitter performance, over the 1.875MHz - 20MHz integration range. The 844031- 01 is packaged in a small 8-pin TSSOP, making it ideal for use in systems with limited board space.

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