General Description
The MAX3624 is a low-jitter precision clock generator optimized for network application. The device integrates a crystal oscillator and a phase-locked loop (PLL) clock multiplier to generate high-frequency clock outputs for Ethernet, Fibre Channel, SONET/SDH, and other networking applications.
Maxim’s proprietary PLL design features ultra-low jitter (0.36psRMS) and excellent power-supply noise rejection, minimizing design risk for network equipment.
The MAX3624 has three LVPECL outputs and one LVCMOS output. Selectable output dividers and a selectable feedback divider allow a range of output frequencies.

Features
♦ Crystal Oscillator Interface: 19.375MHz to 27MHz
♦ CMOS Input: 19MHz to 40.5MHz
♦ Output Frequencies
   Ethernet: 62.5MHz, 125MHz, 156.25MHz,
      312.5MHz
   Fibre Channel: 106.25MHz, 159.375MHz,
      212.5MHz, 318.5MHz
   SONET/SDH: 77.76MHz, 155.52MHz, 311.04MHz
♦ Low Jitter
   0.14psRMS (1.875MHz to 20MHz)
   0.36psRMS (12kHz to 20MHz)
♦ Excellent Power-Supply Noise Rejection
♦ No External Loop Filter Capacitor Required

Applications
   Ethernet Networking Equipment
   Fibre Channel Storage Area Network
   SONET/SDH Network