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Including an integrated crystal oscillator and PLL, the MAX3627 and MAX3629 from Maxim are clock generators with multiple LVDS and LVCMOS outputs. Ideal for Ethernet switches and routers, MAX3627 has 7 LVDS outputs and one LVCMOS output, while the MAX3629 has 5 LVDS outputs and three LVCMOS outputs. The clock generators feature a frequency of 312.5 MHz, clock signals of 0.14ps RMS from a 25 MHz crystal, and generate two pin-selectable frequencies for both Ethernet port clocking and MAC clocking. 

Maxim
800-998-8800, www.maxim-ic.com 
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