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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 18pF parallel resonant crystals
  • RMS phase jitter at:
    155.52MHz (12kHz – 20MHz): 0.74ps (typical)
    156.25MHz (1.875MHz – 20MHz): 0.43ps (typical)
    161.13MHz (1.933Hz – 20MHz): 0.43ps (typical)
    Offset             Noise Power
      100Hz            -95 dBc/Hz
        1kHz            -110 dBc/Hz
      10kHz            -125 dBc/Hz
    100kHz            -125 dBc/Hz
  • Full 3.3V output supply mode
  • 0°C to 70°C ambient operating temperature
  • Available in lead-free (RoHS 6) package

Description

The 843051 is a Gigabit Ethernet Clock Generator. The 843051can synthesize 10 Gigabit Ethernet, SONET, or Serial ATA reference clock frequencies with the appropriate choice of crystal and output divider. The 843051 has excellent phase jitter performance and is packaged in a small 8-pin TSSOP, making it ideal for use in systems with limited board space.

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