PDF ICS83940 Data sheet ( Hoja de datos )

Número de pieza	ICS83940
Descripción	1-TO-18 LVCMOS FANOUT BUFFER
Fabricantes	Integrated Circuit Systems
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No Preview Available ! Integrated Circuit Systems, Inc. PRELIMINARY ICS83940 LOW SKEW, 1-TO-18 LVCMOS FANOUT BUFFER GENERAL DESCRIPTION The ICS83940 is a low skew, 1-to-18 Fanout ,&6 Buffer and a member of the HiPerClockS™ HiPerClockS™ family of High Performance Clock Solutions from ICS. The low impedance LVCMOS out- puts are designed to drive 50Ω 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 www.DataSheeitn4pUu.ctomis designed to accept any differential input levels including LVPECL. The ICS83940 is characterized at full 3.3V, full 2.5V and mixed 3.3V input and 2.5V output operating supply modes. Guaran- teed output and part-to-part skew characteristics make the ICS83940 ideal for those clock distribution applications de- manding well defined performance and repeatability. FEATURES • 18 LVCMOS outputs, 23Ω typical output impedance • Output frequency up to 200MHz • 150ps output skew • Part to part skew: 850ps • 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 BLOCK DIAGRAM CLK_SEL CLK0 nCLK0 LVCMOS_CLK 0 1 PIN ASSIGNMENT Q0 Q1 - Q16 Q17 GND GND LVCMOS_CLK CLK_SEL CLK nCLK VDDI VDDO 32 31 30 29 28 27 26 25 1 24 2 23 3 22 4 ICS83940 21 5 20 6 19 7 18 8 17 9 10 11 12 13 14 15 16 Q6 Q7 Q8 VDDI Q9 Q10 Q11 GND 32-Lead LQFP Y Pacakge 7mm x 7mm x 1.4mm package body Top View 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. 83940AY www.icst.com/products/hiperclocks.html REV. B JULY 31, 2001 1 1 page Integrated Circuit Systems, Inc. PRELIMINARY ICS83940 LOW SKEW, 1-TO-18 LVCMOS FANOUT BUFFER TABLE 5A. AC CHARACTERISTICS, VDDI = VDDO = 3.3V±5%, TA = 0° TO 70° Symbol Parameter Test Conditions Minimum Typical fMAX Maximum Input Frequency tpLH Propagation Delay; NOTE 1 CLK, nCLK 0 < f ≤ 200MHz 2.3 tpHL Propagation Delay; NOTE 1 CLK, nCLK 0 < f ≤ 200MHz tsk(o) Output Skew; NOTE 2, 4 www.DataSheet4tsUk.c(popm) Part-to-Part Skew; NOTE 3, 4 Measured on rising edge @VDDO/2 Measured on rising edge @VDDO/2 tR Output Rise Time 20% to 80% @ 50MHz tF Output Fall Time 20% to 80% @ 50MHz odc Output Duty Cycle 45 50 All parameters measured at fMAX unless noted otherwise. NOTE 1: Measured from the differential input crossing point to the output at VDDO/2. NOTE 2: Defined as skew between outputs at the same supply voltage and with equal load conditions. NOTE 3: Defined as skew between outputs on different devices operating at the same supply voltages, with equal load conditions, and using the same type of inputs. NOTE 4: This parameter is defined in accordance with JEDEC Standard 65. Maximum 200 4 150 850 55 Units MHz ns ns ps ps ns ns % 83940AY www.icst.com/products/hiperclocks.html 5 REV. B JULY 31, 2001 5 Page Integrated Circuit Systems, Inc. PRELIMINARY ICS83940 LOW SKEW, 1-TO-18 LVCMOS FANOUT BUFFER TABLE 7. ORDERING INFORMATION Part/Order Number ICS83940AY ICS83940AYT Marking ICS83940AY ICS83940AY Package Count 32 Lead LQFP 250 per tray 32 Lead LQFP on Tape and Reel 1000 Temperature 0°C to 70°C 0°C to 70°C www.DataSheet4U.com 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. 83940AY www.icst.com/products/hiperclocks.html REV. B JULY 31, 2001 11 11 Page

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Hoja de datos destacado

Número de pieza	Descripción	Fabricantes
ICS83940	1-TO-18 LVCMOS FANOUT BUFFER	Integrated Circuit Systems
ICS83940-01	1-TO-18 LVCMOS FANOUT BUFFER	Integrated Circuit Systems
ICS83940-02	1-TO-18 LVCMOS FANOUT BUFFER	Integrated Circuit Systems
ICS83940D	1-TO-18 LVPECL-TO-LVCMOS / LVTTL FANOUT BUFFER	Integrated Circuit Systems

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