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843251-04

Obsolete

FemtoClock Crystal-to- 3.3V LVPECL Clock Generator

843251-04 Data Sheet
NOTICE - The following device(s) are recommended alternatives:
83PN156I - Programmable FemtoClock™ NG LVPECL Oscillator Replacement

Overview

The 843251-04 is a 10Gb/12Gb Ethernet clock generator that can synthesize 10 Gigabit Ethernet and 12 Gigabit Ethernet with a 25MHz crystal. It can also generate SATA and 10Gb Fibre Channel reference clock frequencies with the appropriate choice of crystals. The 843251-04 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.

843251-04 - Block Diagram
843251-04 - Pinout
843251-04 - Block Diagram
843251-04 - Pinout
  • One differential 3.3V LVPECL output
  • Crystal oscillator interface designed for 18pF parallel resonant crystal
  • Crystal input frequency range: 19.33MHz – 30MHz
  • Output frequency range: 145MHz – 187.5MHz
  • VCO range: 580MHz – 750MHz
  • RMS phase jitter @ 156.25MHz, (1.875MHz – 20MHz): 0.39ps (typical)
  • Full 3.3V supply mode
  • 0°C to 70°C ambient operating temperature
  • Available in lead-free (RoHS 6) package

Documentation

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.

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Models
Type Title Date
Model - IBIS
843251-04 IBIS Model
ZIP 26 KB
1 item

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