ICS8535-11 Datasheet | ICST

.. Integrated Circuit Systems, Inc. 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 Hi Per Clock S™ LVPECL fanout buffer and a member of the Hi Per Clock S™ 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 n Q0 Q1 n Q1 Q2 n Q2 Q3 n Q3 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 n Q0 VCC Q1 n Q1 Q2 n Q2 VCC Q3 n Q3 20-Lead TSSOP 6.5mm x 4.4mm x 0.92mm Package Body G Package Top View 8535AG-11 .icst./products/hiperclocks.html REV. B JULY 27, 2001 Integrated Circuit Systems, Inc. LOW SKEW, 1-TO-4, CRYSTAL OSCILLATOR/ LVCMOS-TO-3.3V LVPECL FANOUT BUFFER Type Power Input Input Input Unused Input Input Power Output Output Output Output Pulldown Pullup Pullup Pulldown Pulldown Description Negative supply pin. Connect to ground. Synchronizing clock enable. When...