PDF ICS85408 Data sheet ( Hoja de datos )

Número de pieza	ICS85408
Descripción	TO-8 DIFFERENTIAL-TO-LVDS CLOCK DISTRIBUTION CHIP
Fabricantes	Integrated Circuit Systems
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No Preview Available ! Integrated Circuit Systems, Inc. ICS85408 LOW SKEW, 1-TO-8 DIFFERENTIAL-TO-LVDS CLOCK DISTRIBUTION CHIP GENERAL DESCRIPTION The ICS85408 is a low skew, high performance ICS 1-to-8 Differential-to-LVDS Clock Distribution HiPerClockS™ Chip and a member of the HiPerClockS™ family of High Performance Clock Solutions from ICS. The ICS85408 CLK, nCLK pair can ac- cept most differential input levels and translates them to 3.3V LVDS output levels. Utilizing Low Voltage Differential Signaling (LVDS), the ICS85408 provides a low power, low noise, low skew, point-to-point solution for distributing LVDS clock signals. www.DGautaaSrahenetete4Ud.ocuotmput and part-to-part skew specifications make the ICS85408 ideal for those applications demanding well defined performance and repeatability. FEATURES • 8 Differential LVDS outputs • CLK, nCLK pair can accept the following differential input levels: LVPECL, LVDS, LVHSTL, SSTL, HCSL • Maximum output frequency: 700MHz • Translates any differential input signal (LVPECL, LVHSTL, SSTL, HCSL) to LVDS levels without external bias networks • Translates any single-ended input signal to LVDS with resistor bias on nCLK input • Multiple output enable inputs for disabling unused outputs in reduced fanout applications • Output skew: 50ps (maximum) • Part-to-part skew: 550ps (maximum) • Propagation delay: 2.4ns (maximum) • 3.3V operating supply • 0°C to 70°C ambient operating temperature • Lead-Free package RoHS compliant BLOCK DIAGRAM OE CLK nCLK Q0 nQ0 Q1 nQ1 Q2 nQ2 Q3 nQ3 Q4 nQ4 Q5 nQ5 Q6 nQ6 Q7 nQ7 PIN ASSIGNMENT nQ6 Q6 nQ5 Q5 nQ4 Q4 nQ3 Q3 nQ2 Q2 nQ1 Q1 1 2 3 4 5 6 7 8 9 10 11 12 24 Q7 23 nQ7 22 OE 21 GND 20 VDD 19 VDD 18 GND 17 VDD 16 CLK 15 nCLK 14 Q0 13 nQ0 ICS85408 24-Lead, 173-MIL TSSOP 4.4mm x 7.8mm x 0.92mm body package G Package Top View 85408BG www.icst.com/products/hiperclocks.html 1 REV. A APRIL 25, 2005 1 page Integrated Circuit Systems, Inc. ICS85408 LOW SKEW, 1-TO-8 DIFFERENTIAL-TO-LVDS CLOCK DISTRIBUTION CHIP PARAMETER MEASUREMENT INFORMATION 3.3V www.DataPSohweeer St4uUpp.clyom Float GND +- LVDS 3.3V OUTPUT LOAD AC TEST CIRCUIT SCOPE Qx nQx VDD nCLK CLK V PP GND Cross Points DIFFERENTIAL INPUT LEVEL PART 1 nQx PART 1 Qx PART 2 nQy PART 2 Qy t sk(pp) nQx Qx nQy Qy t sk(o) PART-TO-PART SKEW OUTPUT SKEW V CMR nQ0:nQ7 Q0:Q7 Pulse Width t PERIOD odc = t PW t PERIOD nCLK CLK nQ0:nQ7 Q0:Q7 tPD OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD PROPAGATION DELAY 85408BG www.icst.com/products/hiperclocks.html 5 REV. A APRIL 25, 2005 5 Page Integrated Circuit Systems, Inc. ICS85408 LOW SKEW, 1-TO-8 DIFFERENTIAL-TO-LVDS CLOCK DISTRIBUTION CHIP TABLE 8. ORDERING INFORMATION Part/Order Number Marking Package Shipping Packaging Temperature ICS85408BG ICS85408BG 24 Lead TSSOP tube 0°C to 70°C ICS85408BGT ICS85408BG 24 Lead TSSOP 1000 tape & reel 0°C to 70°C ICS85408BGLF TBD 24 Lead "Lead-Free" TSSOP tube 0°C to 70°C ICS85408BGLFT TBD 24 Lead "Lead-Free" TSSOP 1000 tape & reel 0°C to 70°C NOTE: Parts that are ordered with an "LF" suffix to the part number are the Pb-Free configuration and are RoHS compliant. www.DataSheet4U.com The aforementioned trademark, HiPerClockS™ is a trademark of Integrated Circuit Systems, Inc. or its subsidiaries in the United States and/or other countries. While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems, Incorporated (ICS) assumes no responsibility for either its use or for infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not recommended without additional processing by ICS. ICS reserves the right to change any circuitry or specifications without notice. ICS does not authorize or warrant any ICS product for use in life support devices or critical medical instruments. 85408BG www.icst.com/products/hiperclocks.html REV. A APRIL 25, 2005 11 11 Page

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