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ICS83940AY-02T Datasheet(PDF) 1 Page - Integrated Circuit Systems |
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ICS83940AY-02T Datasheet(HTML) 1 Page - Integrated Circuit Systems |
1 / 11 page 83940AY-02 www.icst.com/products/hiperclocks.html REV. A AUGUST 6, 2001 1 Integrated Circuit Systems, Inc. ICS83940-02 LOW SKEW, 1-TO-18 LVCMOS FANOUT BUFFER PRELIMINARY GENERAL DESCRIPTION The ICS83940-02 is a low skew, 1-to-18 Fanout Buffer and a member of the HiPerClockS™ family of High Performance Clock Solutions from ICS. The low impedance LVCMOS out- puts are designed to drive 50 Ω series or parallel terminated transmission lines. The effective fanout can be in- creased from 18 to 36 by utilizing the ability of the outputs to drive two series terminated lines. The differential clock input is designed to accept any differential input levels including LVPECL. The ICS83940-02 is characterized at full 3.3V, full 2.5V and mixed 3.3V input and 2.5V output operating supply modes. Guaranteed output and part-to-part skew characteristics make the ICS83940 ideal for those clock distribution applica- tions demanding well defined performance and repeatability. BLOCK DIAGRAM PIN ASSIGNMENT FEATURES • 18 LVCMOS outputs, 7Ω typical output impedance • Output frequency up to 200MHz • 150ps output skew • Part to part skew: TBD • Selectable LVCMOS or differential clock input • LVTTL / LVCMOS clock select input • Full 3.3V, 2.5V or mixed 3.3V, 2.5V supply modes • 0°C to 70°C ambient operating temperature • Industrial temperature information available upon request HiPerClockS™ ,&6 32-Lead LQFP Y Pacakge 7mm x 7mm x 1.4mm package body Top View Q0 Q1 - Q16 Q17 CLK_SEL CLK0 nCLK0 LVCMOS_CLK 0 1 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 Q6 Q7 Q8 VDDO Q9 Q10 Q11 GND GND GND LVCMOS_CLK CLK_SEL CLK nCLK VDDI VDDO ICS83940-02 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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