PI6C557-10LE Diodes Incorporated

PI6C557-10 Network Clock Generator Product Features Description 100MHz Differential Output, 33MHz LVCMOS The PI6C557-10 is an integrated 100MHz differential and 33MHz LVCMOS clock generator. It uses a 25MHz quartz crystal to provide Supply voltage of 3.3V 5% an input frequency reference. The high performance internal PLL 25MHz input frequency multiplier is a proven design that ships world-wide for PCI Express Jitter 60ps cycle-to-cycle (typ) 100MHz applications. Industrial temperature range Packaging: (Pb-free and Green) The PI6C557-10 is available in a 16 lead 4.4 x 5.0mm TSSOP package and is operated from a single 3.3V supply. Separate supply 16-pin, 173 mils wide TSSOP pins are provided for analog core, 100MHz differential output, and 33MHz LVCMOS output to adhere to lowest risk, best known power supply partitioning practices. Block Diagram VDD 5 100M 100M Phase Lock Loop X1/CLK Crystal 33M 25 MHz Driver crystal or clock X2 5 Load Capacitors GND OE Pin Con guration 1 GNDA 16 OE 2 VDDA 15 GND 3 VDDX 14 100M 4 XIN 13 100M 5 XOUT 12 VDD 6 GNDX 11 VDD33 7 GND 10 33M 8 VDD 9 GND33 PS8982A 07/27/09 09-0015 1PI6C557-10 Network Clock Generator Pin Description Pin Pin Name I/O Type Description 1 GNDA Power Analog Ground 2 VDDA Power Analog power, connect to clean 3.3V source 3 VDDX Power Crystal oscillator circuit power 4 XIN Input Crystal input. 5 XOUT Output Crystal output. 6 GNDX Power Crystal power ground. 7 GND Ground. 8 VDD Power. 9 GND33 Power Ground for 33MHz output. 10 33M Output 33.3MHz LVCMOS output. 11 VDD33 Power Power for 33MHz output 12 VDD Power Power. 13 100M Output Complimentary 100MHz differential output. 14 100M Output 100MHz differential output. 15 GND Power Ground. 16 OE Input Output enable, tristates both 100MHz and 33MHz outputs when HIGH. Internal pull-down is 30Kohm. Application Information Decoupling Capacitors Decoupling capacitors of 0.01F should be connected between each V pin and the ground plane and placed as close to the DD V pin as possible. DD PS8982A 07/27/09 09-0015 2