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ICS8432BYI-51LF Datasheet(PDF) 1 Page - Integrated Device Technology |
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ICS8432BYI-51LF Datasheet(HTML) 1 Page - Integrated Device Technology |
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1 / 20 page  700MHZ, CYRSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER ICS8432I-51 IDT™ / ICS™ 3.3V LVPECL FREQUENCY SYNTHESIZER 1 ICS8432BYI-51 REV. A SEPTEMBER 24, 2007 GENERAL DESCRIPTION The ICS8432I-51 is a general purpose, dual out- put Crystal-to-3.3V Differential LVPECL High Fre- quency Synthesizer and a member of the HiPerClockS™ family of High Performance Clock Solutions from IDT. The ICS8432I-51 has a select- able REF_CLK or crystal input. The VCO operates at a fre- quency 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 con- figuration logic. The low phase noise characteristics of the ICS8432I-51 make it an ideal clock source for Gigabit Ethernet, Fibre Channel 1 and 2, and Infiniband applications. BLOCK DIAGRAM PIN ASSIGNMENT FEATURES • Dual differential 3.3V LVPECL outputs • Selectable crystal oscillator interface or LVCMOS/LVTTL TEST_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 both standard (RoHS 5) and lead-free (RoHS 6) packages HiPerClockS™ ICS OSC VCO_SEL XTAL_SEL REF_CLK XTAL1 XTAL2 S_LOAD S_DATA S_CLOCK nP_LOAD M0:M8 N0:N1 VCO PLL FOUT0 nFOUT0 FOUT1 nFOUT1 TEST CONFIGURATION INTERFACE LOGIC ÷ M 0 1 0 1 PHASE DETECTOR ÷1 ÷2 ÷4 ÷8 MR 32 31 30 29 28 27 26 25 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 24 23 22 21 20 19 18 17 XTAL_OUT REF_CLK XTAL_SEL VCCA S_LOAD S_DATA S_CLOCK MR M5 M6 M7 M8 N0 N1 nc VEE 32-Lead LQFP 7mm x 7mm x 1.4mm package body Y Package Top View ICS8432I-51 32-Lead VFQFN 5mm x 5mm x 0.95m package body K Package Top View |
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