OBSOLETE PI6LC48P21 Single Output LVPECL Clock Generator Features Description Single differential LVPECL output e PTh I6LC48P21 is a single output LVPECL synthesizer opti - mized to generate Ethernet reference clock frequencies and is a Supports the following output frequencies: 125MHz or member of Pericoms HiFlex family of high performance clock 133MHz solutions. Using a 25MHz or 26.6MHz crystal, it can generate RMS phase jitter 125MHz, using a 25MHz crystal 125MHz or 133MHz output frequencies. (12kHz 20MHz): 0.3ps (typical) e PTh I6LC48P21 uses Pericoms proprietary low phase noise Full 3.3V or 2.5V supply modes PLL technology to achieve ultra low phase jitter, so it is ideal for Commercial and industrial ambient operating temperature Ethernet interface in all kind of systems. Available in lead-free package: 8-TSSOP Applications Networking systems Block Diagram Pin Configuration VDDA XTAL IN 1 8 VDD OSC CLK PFD VCO /5 XTAL OUT GND 2 7 CLK CLK XTAL OUT 3 6 CLK XTAL IN 5 4 NC /25 www.pericom.com PI6LC48P21 Rev. A 06/19/13 13-0096 1OBSOLETE PI6LC48P21 Single Output LVPECL Clock Generator Pinout Table Pin No. Pin Name I/O Type Description 1 VDDA Power Analog Power Supply 2 GND Power Ground XTAL OUT, 3, 4 Crystal Crystal Input and Output XTAL IN 5 NC No Connect 6, 7 CLK , CLK Output Output Clock 8 VDD Power Core Power Supply Output Frequency Table Xtal Frequency (MHz) Output Frequency (MHz) 25 125 26.6 133 Typical Crystal Requirement Parameter Minimum Typical Maximum Units Mode of Oscillation Fundamental Frequency 22.4 25 28 MHz Equivalent Series Resistance 50 (ESR) Shunt Capacitance 7 pF Drive Level 1 mW Recomended Crystal Specification Pericom recommends: a) FL2500047, SMD 3.2x2.5(4P), 25MHz, CL=18pF, +/-20ppm