PI6LC48P25104 Single Output LVPECL Clock Generator Features Description Single differential LVPECL output e PTh I6LC48P25104 is a single output LVPECL synthesizer optimized to generate Ethernet reference clock frequencies and Output frequency range: 145MHz to 187.5MHz is a member of Pericoms HiFlex family of high performance RMS phase jitter 156.25MHz, using a 25MHz crystal clock solutions. Using a 25MHz, it can generate 156.25MHz, or (12kHz - 20MHz): 0.3ps (typical) 187.5MHz output. Using other crystal frequencies, it can gener- Full 3.3V or 2.5V supply modes ate other popular frequencies for networking and server storage systems. Commercial and industrial operating temperature e PTh I6LC48P25104 uses Pericoms proprietary low phase noise Available in lead-free package: 8-TSSOP PLL technology to achieve ultra low phase jitter, so it is ideal for SATA/SAS or Ethernet interface in all kind of systems. Applications Networking systems Servers and Storage systems Block Diagram Pin Configuration XTAL IN OSC CLK VDDA 8 1 VDD PFD VCO XTAL OUT /N CLK GND 2 7 CLK XTAL OUT 6 3 CLK /M XTAL IN 4 5 Freq SEL Freq SEL www.pericom.com PI6LC48P25104 Rev. A 07/08/2013 13-0109 1PI6LC48P25104 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 PullLO, output is multiplied by 6.25,HIG, output is multiplied by 5 Freq SEL Input Down 7.5. 6, 7 CLK , CLK Output Output Clock 8 VDD Power Core Power Supply Output Frequency Table Xtal Frequency (MHz) Freq SEL Output Frequency (MHz) 20 1 150 21.25 1 159.375 24 0 150 0 156.25 25 1 187.5 25.5 0 159.375 30 0 187.5 Typical Crystal Requirement Parameter Minimum Typical Maximum Units Mode of Oscillation Fundamental Freq SEL = 0 23.2 30 Frequency MHz Freq SEL = 1 19.33 25 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