PL602041 ClockWorks PCIe Quad Outputs Ultra-Low Jitter, HCSL Frequency Synthesizer General Description Features The PL602041 is a member of the ClockWorks family of Input crystal frequency of 25MHz devices from Micrel and provides an extremely low-noise Generates four HCSL clock outputs at 25MHz, 100MHz, timing solution for PCI Express clock signals. 125MHz, and 200MHz 2.5V or 3.3V operating range The device operates from a 3.3V or 2.5V power supply and synthesizes four HCSL output clocks at 25MHz, Typical phase jitter 100MHz 100MHz, 125MHz, and 200MHz. The PL602041 accepts a (1.875MHz to 20MHz): 105fs 25MHz crystal. Compliant with PCI Express Gen1, Gen2, and Gen3 Datasheets and support documentation are available on Industrial temperature range (40 C to +85 C) Micrels web site at: www.micrel.com. RoHS and PFOS compliant Available in 24-pin 4mm x 4mm QFN package Applications Servers Storage systems Switches and routers Gigabit Ethernet Set-top boxes/DVRs Block Diagram ClockWorks and Ripple Blocker are trademarks of Micrel, Inc. Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. PL602041 (1) Ordering Information Part Number Marking Shipping Junction Temperature Range Package Lead Finish PL602 PL602041UMG Tube 40C to +85C 24-Pin QFN NiPdAu 041 PL602 PL602041UMG TR Tape and Reel 40C to +85C 24-Pin QFN NiPdAu 041 Note: 1. Devices are RoHS and PFOS compliant. Pin Configuration 24-Pin QFN (Top View) Pin Description Pin Number Pin Name Pin Type Pin Level Pin Function 17, 18 /Q0, Q0 O, (DIF) HCSL Differential Clock Outputs Pairs. 19, 20 /Q1, Q1 23, 24 /Q2, Q2 O, (DIF) HCSL Differential Clock Outputs Pairs. 1, 2 /Q3, Q3 9 VDDO2 PWR Power Supply. 16, 21 VDDO1 PWR Power Supply. 3, 7 VDD PWR Core Power Supply. 4, 5, 13, 22 VSS PWR Power Supply Ground. Frequency Select for 25MHz, 100MHZ, 125MHZ, and 200MHz. Each pin 6, 8 S0, S1 I LVCMOS has a 45K pull-up. 10 XIN I, (SE) Crystal Crystal Input, no load caps needed (see Figure 5). 11 XOUT O, (SE) Crystal Crystal Output, no load caps needed (see Figure 5). 12 OE I, (SE) LVCMOS Output Enable/Disable. 14, 15 NC No Connect. Revision 1.3 January 28, 2014 2 tcghelp micrel.com or (408) 955-1690