ICS83947I-147

Integrated Circuit Systems, Inc. ICS83947I-147 LOW SKEW, 1-TO-9 LVCMOS/LVTTL FANOUT BUFFER FEATURES 9 LVCMOS/LVTTL outputs Selectable CLK0 and CLK1 can accept the following input levels: LVCMOS and LVTTL Maximum output frequency: 250MHz Output skew: 115ps (maximum) Part-to-part skew: 500ps (maximum) Additive phase jitter, RMS: 0.02ps (typical) @ 3.3V Full 3.3V or 2.5V operating supply -40°C to 85°C ambient operating temperature Pin compatible with the MPC947 GENERAL DESCRIPTION The ICS83947I-147 is a low skew, 1-to-9 LVCMOS/LVTTL Fanout Buffer and a member of HiPerClockS™ the HiPerClockS™ family of High Performance Clock Solutions from ICS. The low impedance LVCMOS/LVTTL outputs are designed to drive 50Ω series or parallel terminated transmission lines. The effective fanout can be increased from 9 to 18 by utilizing the ability of the outputs to drive two series terminated lines. ICS www.DataSheet4U.com Guaranteed output and part-to-part skew characteristics make the ICS83947I-147 ideal for high performance, 3.3V or 2.5V single ended applications. BLOCK DIAGRAM CLK_EN D Q LE CLK0 CLK1 0 PIN ASSIGNMENT GND GND GND VDDO VDDO Q0 Q1 Q2 32 31 30 29 28 27 26 25 Q0 GND CLK_SEL Q1 CLK0 CLK1 CLK_EN Q3 Q4 Q5 Q6 Q7 Q8 OE VDD GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 GND VDDO Q8 GND Q7 VDDO Q6 GND 24 23 22 GND Q3 VDDO Q4 GND Q5 VDDO GND 1 CLK_SEL Q2 ICS83947I-147 21 20 19 18 17 32-Lead LQFP 7mm x 7mm x 1.4mm package body Y Package Top View OE 83947AYI-...