ICS8535-11

www.DataSheet4U.com Integrated Circuit Systems, Inc. ICS8535-11 LOW SKEW, 1-TO-4, CRYSTAL OSCILLATOR/ LVCMOS-TO-3.3V LVPECL FANOUT BUFFER FEATURES 4 differential 3.3V LVPECL outputs Selectable CLK or crystal inputs CLK can accept the following input levels: LVCMOS, LVTTL Maximum output frequency up to 266MHz Output skew: 35ps (maximum) Part-to-part skew: 150ps (maximum) Propagation delay: 2.4ns (maximum) 3.3V operating supply 0°C to 70°C ambient operating temperature Industrial Temperature information available upon request GENERAL DESCRIPTION The ICS8535-11 is a low skew, high performance 1-to-4 3.3V Crystal Oscillator/LVCMOS-to-3.3V HiPerClockS™ LVPECL fanout buffer and a member of the HiPerClockS™ family of High Performance Clock Solutions from ICS. The ICS8535-11 has selectable single ended clock or crystal inputs. The single ended clock input accepts LVCMOS or LVTTL input levels and translate them to 3.3V LVPECL levels. The output enable is internally synchronized to eliminate runt pulses on the outputs during asynchronous assertion/deassertion of the clock enable pin. ,&6 Guaranteed output and part-to-part skew characteristics make the ICS8535-11 ideal for those applications demanding well defined performance and repeatability. BLOCK DIAGRAM CLK_EN D Q LE CLK XTAL1 XTAL2 CLK_SEL 0 1 Q0 nQ0 Q1 nQ1 Q2 nQ2 Q3 nQ3 PIN ASSIGNMENT V EE CLK_EN CLK_SEL CLK nc XTAL1 XTAL2 nc nc VCC 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 Q0 nQ0 VCC Q1 nQ1 Q2 ...