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ICS843023

Part Number	ICS843023
Manufacturer	Integrated Circuit Systems
Description	3.3V 250MHZ LVPECL CLOCK GENERATOR
Published	Mar 27, 2010
Detailed Description	PRELIMINARY Integrated Circuit Systems, Inc. www.DataSheet4U.com ICS843023 FEMTOCLOCKS™ CRYSTAL-TO3.3V, 250MHZ LVPECL...
Datasheet	ICS843023 PDF File

Overview

PRELIMINARY Integrated Circuit Systems, Inc.
www.
DataSheet4U.
com ICS843023 FEMTOCLOCKS™ CRYSTAL-TO3.
3V, 250MHZ LVPECL CLOCK GENERATOR FEATURES • 1 differential 3.
3V LVPECL output • Crystal oscillator interface designed for 25MHz, 18pF parallel resonant crystal • Maximum output frequency: 250MHz, using a 25MHz crystal • VCO range: 490MHz - 640MHz • RMS phase jitter @ 250MHz, using a 25MHz crystal (12KHz - 20MHz): 0.
33ps (typical) • 3.
3V operating supply • 0°C to 70°C ambient operating temperature GENERAL DESCRIPTION The ICS843023 is a Gigabit Ethernet Clock Generator and a member of the HiPerClocksTM HiPerClockS™ family of high performance devices from ICS.
The ICS843023 uses a 25MHz crystal to synthesize 250MHz.
The ICS843023 has excellent phase jitter performance, over the 1.
875MHz – 20MHz integration range.
The ICS843023 is packaged in a small 8-pin TSSOP, making it ideal for use in systems with limited board space.
ICS BLOCK DIAGRAM OE 25MHz XTAL_IN PIN ASSIGNMENT VCC XTAL_OUT XTAL_IN VEE 1 2 3 4 8 7 6 5 Q0 nQ0 VCC OE OSC XTAL_OUT Phase Detector VCO ÷2 (fixed) Q0 nQ0 ICS843023 ÷20 (fixed) 8-Lead TSSOP 4.
40mm x 3.
0mm x 0.
925mm package body G Package Top View The Preliminary Information presented herein represents a product in prototyping or pre-production.
The noted characteristics are based on initial product characterization.
Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications without notice.
843023AG www.
icst.
com/products/hiperclocks.
html REV.
A NOVEMBER 30, 2004 1 PRELIMINARY Integrated Circuit Systems, Inc.
www.
DataSheet4U.
com ICS843023 FEMTOCLOCKS™ CRYSTAL-TO3.
3V, 250MHZ LVPECL CLOCK GENERATOR Type Description Core supply pin.
Cr ystal oscillator interface.
XTAL_IN is the input, XTAL_OUT is the output.
Negative supply pin.
Active high output enable.
When logic HIGH, the outputs are enabled and active.
When logic LOW, the outputs are disabled and are in a high impedance state.
LVCMOS/L...

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