8432I-51

700MHz, Crystal-to-3.3V Differential LVPECL Frequency Synthesizer 8432I-51 DATA SHEET GENERAL DESCRIPTION The 8432I-51 is a general purpose, dual output Crystal-to-3.3V Differential LVPECL High Frequency Synthesizer. The 8432I-51 has a selectable REF_CLK or crystal input. The VCO operates at a frequency range of 250MHz to 700MHz. The VCO frequency is programmed in steps equal to the value of the input reference or crystal frequency. The VCO and output frequency can be programmed using the serial or parallel interface to the configuration logic. The low phase noise characteristics of the 8432I-51 make it an ideal clock source for Gigabit Ethernet, Fibre Channel 1 and 2, and Infiniband applications. FEATURES Dual differential 3.3V LVPECL outputs Selectable crystal oscillator interface or LVCMOS/LVTTL REF_CLK Output frequency range: 31.25MHz to 700MHz Crystal input frequency range: 12MHz to 25MHz VCO range: 250MHz to 700MHz Parallel or serial interface for programming counter and output dividers RMS period jitter: 3.5ps (maximum) Cycle-to-cycle jitter: 40ps (maximum) 3.3V supply voltage -40°C to 85°C ambient operating temperature Available in lead-free (RoHS 6) package BLOCK DIAGRAM 8432I-51 REVISION A 11/18/15 PIN ASSIGNMENT XTAL_IN nP_LOAD VCO_SEL M0 M1 M2 M3 M4 32 31 30 29 28 27 26 25 M5 1 24 XTAL_OUT M6 2 23 REF_CLK M7 3 22 XTAL_SEL M8 4 N0 5 8432I-51 21 VCCA 20 S_LOAD N1 6 19 S_DATA nc 7 18 S_CLOCK VEE 8 17 MR 9 10 11 12 13 14 15 1...