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DSC557-04331KL1-T Datasheet(PDF) 1 Page - Micrel Semiconductor |
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DSC557-04331KL1-T Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 7 page ______________________________________________________________________________________________________________________________________________ DSC557-04 Page 1 Crystal-less™ Three Output PCIe Clock Generator DSC557-04 General Description The DSC557-04 is a Crystal-less™, three output PCI express clock generator meeting Gen1, Gen2, and Gen3 specifications. The clock generator uses proven silicon MEMS technology to provide excellent jitter and stability over a wide range of supply voltages and temperatures. By eliminating the external quartz crystal, MEMS clock generators significantly enhance reliability and accelerate product development, while meeting stringent clock performance criteria for a variety of communications, storage, and networking applications. DSC557-04 has an Output Enable / Disable feature allowing it to disable all outputs when OE1 and OE2 are low. OE1 controls CLK0 and OE2 controls CLK1/2. CLK1/2 are synchronous PCIe clocks. See the OE function diagram for more detail. The device is available in a 20 pin QFN. Additional output formats are in any combination of LVPECL, LVDS, and HCSL. Block Diagram Control Circuitry MEMS PLLs Output Control and Divider CLK2+ CLK2- CLK1+ CLK1- OE1 CLK0+ CLK0- OE2 * Clk0+/-, Clk1+/- and Clk2 +/- are 100 MHz as per PCIe standards. For other frequencies, please contact the factory. Features Meets PCIe Gen1, Gen2 & Gen3 specs Available Output Formats: o HCSL, LVPECL, or LVDS o Mixed Outputs: LVPECL/HCSL/LVDS Wide Temperature Range o Ext. Industrial: -40° to 105° C o Industrial: -40° to 85° C o Ext. commercial: -20° to 70° C Supply Range of 2.25 to 3.6 V Low Power Consumption o 30% lower than competing devices Excellent Shock & Vibration Immunity o Qualified to MIL-STD-883 Available Footprints: o 20 QFN Lead Free & RoHS Compliant Short Lead Time: 2 Weeks Applications Communications/Networking o Ethernet o 1G, 10GBASE-T/KR/LR/SR, and FcoE o Routers and Switches o Gateways, VoIP, Wireless AP’s o Passive Optical Networks Storage o SAN, NAS, SSD, JBOD Embedded Applications o Industrial, Medical, and Avionics o Security Systems and Office Automation o Digital Signage, POS and others Consumer Electronics o Smart TV, Bluray, STB |
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