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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 HSTL output pair
  • Crystal oscillator interface, 18pF parallel resonant crystal (24.5MHz – 34MHz)
  • Output frequency range: 245MHz – 340MHz
  • VCO range: 490MHz – 680MHz
  • RMS phase jitter at: 250MHz, using a 25MHz crystal (1.875MHz – 20MHz): 0.36ps (typical)
  • Full 3.3V or 2.5V output supply modes
  • 0°C to 70°C ambient operating temperature
  • Available in lead-free (RoHS 6) package

Description

The 842023 is an Ethernet clock generator. For Ethernet applications, a 25MHz crystal is used to generate 250MHz. The 842023 uses our 3rd generation low phase noise VCO technology and can achieve <1ps rms phase jitter, easily meeting Ethernet jitter requirements. The 842023 is packaged in a small 8-pin TSSOP, making it ideal for use in systems with limited board space.

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