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DSC557-04211KE0-T Datasheet(PDF) 1 Page - Micrel Semiconductor

Part # DSC557-04211KE0-T
Description  Crystal-less??Three Output PCIe Clock Generator
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

DSC557-04211KE0-T Datasheet(HTML) 1 Page - Micrel Semiconductor

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______________________________________________________________________________________________________________________________________________
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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