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ICS84326 Datasheet(PDF) 1 Page - Integrated Circuit Systems |
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ICS84326 Datasheet(HTML) 1 Page - Integrated Circuit Systems |
1 / 15 page 84326AM www.icst.com/products/hiperclocks.html REV. A MARCH 10, 2003 1 Integrated Circuit Systems, Inc. ICS84326 CRYSTAL-TO-3.3V LVPECL SERIAL ATTACHED SCSI CLOCK SYNTHESIZER/FANOUT BUFFER PRELIMINARY GENERAL DESCRIPTION The ICS84326 is a Crystal-to-3.3V LVPECL Clock Synthesizer/Fanout Buffer designed for Serial Attached SCSI applications and is a member of the HiperClockS family of High Performance Clock Solutions from ICS. Using a 25MHz crystal, the 6 LVPECL outputs can be set for either 75MHz or 150MHz using the frequency select pins. The low jitter/low phase noise characteristics make it an ideal clock source for use in Serial Attached SCSI applications or for other applications which require a 75MHz or 150MHz reference clock. BLOCK DIAGRAM PIN ASSIGNMENT FEATURES • 6 LVPECL outputs • Crystal oscillator interface • Output frequency: 75MHz or 150MHz • Crystal input frequency: 25MHz • Cycle-to-cycle jitter: 20ps (typical) • RMS phase jitter at 150MHz, using a 25MHz crystal (899.8KHz to 20MHz): TBD • Phase noise: Offset Noise Power 100Hz ............... TBD 1KHz ............... TBD 10KHz ............... TBD 100KHz ............... TBD • Full 3.3V or 3.3V core, 2.5V supply mode • 0°C to 70°C ambient operating temperature • Industrial temperature information available upon request HiPerClockS™ ,&6 Q0:Q5 ICS84326 24-Lead, 300-MIL SOIC 7.5mm x 15.33mm x 2.3mm body package M Package Top View Q0 nQ0 Q1 nQ1 Q2 nQ2 Q3 nQ3 Q4 nQ4 Q5 nQ5 1 2 3 4 5 6 7 8 9 10 11 12 VCCO F_SEL nc MR XTAL1 XTAL2 nc VCCA VCC PLL_SEL VEE VCCO PLL 6/ Feedback Divider OSC 6/ Output Divider 0 1 XTAL1 XTAL2 PLL_SEL MR F_SEL nQ0:nQ5 24 23 22 21 20 19 18 17 16 15 14 13 FUNCTION TABLE s t u p n Iy c n e u q e r F t u p t u O R ML E S _ FT U O _ F 1X W O L 00 z H M 5 7 01 z H M 0 5 1 The Preliminary Information presented herein represents a product in prototyping or pre-production. The noted characteristics are based on initial product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications without notice. |
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