PDF ICS83948I Data sheet ( Hoja de datos )

Número de pieza	ICS83948I
Descripción	1-TO-12 DIFFERENTIALTO-LVCMOS/LVTTL FANOUT BUFFER
Fabricantes	Integrated Device Technology
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Hay una vista previa y un enlace de descarga de ICS83948I (archivo pdf) en la parte inferior de esta página. Total 13 Páginas
No Preview Available ! LOW SKEW, 1-TO-12 DIFFERENTIAL- TO-LVCMOS/LVTTL FANOUT BUFFER General Description The ICS83948I is a low skew, 1-to-12 ICS Differential-to-LVCMOS/LVTTL Fanout Buffer and HiPerClockS™ a member of the HiPerClockS™ family of High Performance Clock Solutions from IDT. The ICS83948I has two selectable clock inputs. The CLK, nCLK pair can accept most standard differential input levels. The LVCMOS_CLK can accept LVCMOS or LVTTL input levels. The low impedance LVCMOS/LVTTL outputs are designed to drive 50 series or parallel terminated transmission lines. The effective fanout can be increased from 12 to 24 by utilizing the ability of the outputs to drive two series terminated lines. The ICS83948I is characterized at full 3.3V core/3.3V output. Guaranteed output and part-to-part skew characteristics make the ICS83948I ideal for those clock distribution applications demanding well defined performance and repeatability. ICS83948I Features • Twelve LVCMOS/LVTTL outputs • Selectable differential CLK/nCLK or LVCMOS/LVTTL clock input • CLK/nCLK pair can accept the following differential input levels: LVPECL, LVDS, LVHSTL, SSTL, HCSL • LVCMOS_CLK supports the following input types: LVCMOS, LVTTL • Maximum output frequency: 250MHz • Output skew: 350ps (maximum) • Part-to-part skew: 1.5ns (maximum) • 3.3V core, 3.3V output • -40°C to 85°C ambient operating temperature • Available in both standard (RoHS 5) and lead-free (RoHS 6) packages Block Diagram CLK_EN Pullup LVCMOS_CLK Pullup CLK Pullup nCLK Pulldown CLK_SEL Pullup 1 0 D Q OE Pullup Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10 Q11 Pin Assignment CLK_SEL LVCMOS_CLK CLK nCLK CLK_EN OE VDD GND 32 31 30 29 28 27 26 25 1 24 2 23 3 22 4 21 5 20 6 19 7 18 8 17 9 10 11 12 13 14 15 16 GND Q4 VDDO Q5 GND Q6 VDDO Q7 ICS83948I 32-Lead LQFP 7mm x 7mm x 1.4mm package body Y Package Top View IDT™ / ICS™ LVCMOS/LVTTL CLOCK GENERATOR 1 ICS83948AYI REV. C NOVEMBER 14, 2012 1 page ICS83948I LOW SKEW, 1-TO-12 DIFFERENTIAL-TO-LVCMOS/LVTTL FANOUT BUFFER Parameter Measurement Information 1.65V±0.15V VDD, VDDO SCOPE Qx GND -1.65V±0.15V 3.3V Core/3.3V LVCMOS Output Load AC Test Circuit VDD nCLK CLK V PP GND Cross Points Differential Input Level Part 1 Qx V DDO 2 Part 2 Qy V DDO 2 t sk(pp) Part-to-Part Skew V DDO Qx 2 V DDO Qy 2 t sk(o) Output Skew V CMR 0.8V Q0:Q11 2V tR Output Rise/Fall Time 2V 0.8V tF Q0:Q11 VDDO 2 t PW odc = t PW t PERIOD VDDO 2 t PERIOD Output Pulse Width VDDO 2 IDT™ / ICS™ LVCMOS/LVTTL CLOCK GENERATOR 5 ICS83948AYI REV. C NOVEMBER 14, 2012 5 Page ICS83948I LOW SKEW, 1-TO-12 DIFFERENTIAL-TO-LVCMOS/LVTTL FANOUT BUFFER Ordering Information Table 8. Ordering Information Part/Order Number ICS83948AYILF ICS83948AYILFT Marking ICS83948AYIL ICS83948AYI Package “Lead-Free” 32 Lead LQFP “Lead-Free” 32 Lead LQFP Shipping Packaging Tray 1000 Tape & Reel NOTE: "LF" suffix to the part number are the Pb-Free configuration and are RoHS compliant. Temperature -40C to 85C -40C to 85C While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology (IDT) assumes no responsibility for either its use or for the 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 and industrial applications. Any other applications, such as those requiring high reliability or other extraordinary environmental requirements are not recommended without additional processing by IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT does not authorize or warrant any IDT product for use in life support devices or critical medical instruments. IDT™ / ICS™ LVCMOS/LVTTL CLOCK GENERATOR 11 ICS83948AYI REV. C NOVEMBER 14, 2012 11 Page

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Hoja de datos destacado

Número de pieza	Descripción	Fabricantes
ICS83948I	1-TO-12 DIFFERENTIAL-TO-LVCMOS FANOUT BUFFER	Integrated Circuit Systems
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ICS83948I-01	1-TO-12 DIFFERENTIAL-TO-LVCMOS FANOUT BUFFER	Integrated Circuit Systems
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