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Features

  • Fourth generation FemtoClock NG technology
  • 155.52MHz output clock synthesized from a 19.44MHz fundamental mode crystal
  • One 2.5V or 3.3V LVCMOS/LVTTL clock output
  • Crystal interface designed for a 12pF parallel resonant crystal
  • RMS phase jitter at 155.52MHz, using a 19.44MHz crystal (12kHz to 20MHz): 0.482ps (maximum)
  • RMS phase jitter at 156.25MHz, using a 19.53125MHz crystal (1.875MHz to 20MHz): 0.138ps (maximum)
  • LVCMOS interface levels for the control inputs
  • Full 2.5V or 3.3V supply voltage
  • Lead-free (RoHS 6) packaging
  • -40 °C to 85 °C ambient operating temperature

Description

The 840N051I is a LVCMOS/LVTTL clock synthesizer designed for SDH/SONET and Ethernet applications. The device generates a selectable 156.25MHz or 77.76MHz clock signal with excellent phase jitter performance. It uses Renesas' fourth generation FemtoClock® NG technology for an optimum of high clock frequency, low phase noise performance and low power consumption. The device supports 2.5V or 3.3V voltage supply and is packaged in a small, lead-free (RoHS 6) 8-lead TSSOP package. The extended temperature range supports wireless infrastructure, telecommunication, and networking end equipment requirements.

Part NumberStatusSamplesStockPackageLead Count (#)Carrier TypeMoisture Sensitivity Level (MSL)Qty. per Reel (#)Qty. per Carrier (#)Pb (Lead) FreePb Free CategoryTemp. Range (°C)
840N051BGILFObsoleteN/AOut of StockTSSOP8#Tube1096#Yese3 Sn-40 to 85°C
840N051BGILFTObsoleteN/AOut of StockTSSOP8#Reel12500#0Yese3 Sn-40 to 85°C
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