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MK2754

Part Number	MK2754
Manufacturer	Integrated Circuit Systems
Description	Low Cost 54 MHz VCXO
Published	May 7, 2005
Detailed Description	I C R O C LOC K Description The MK2754 is MicroClock’s lowest cost, low jitter, high performance VCXO and PLL clock synt...
Datasheet	MK2754 PDF File

Overview

I C R O C LOC K Description The MK2754 is MicroClock’s lowest cost, low jitter, high performance VCXO and PLL clock synthesizer designed to replace expensive 54 MHz VCXOs.
The on-chip Voltage Controlled Crystal Oscillator accepts a 0 to 3V input voltage to vary the output clocks by ±100 ppm.
Using MicroClock’s patented VCXO and analog PhaseLocked Loop (PLL) techniques, the device uses an inexpensive external 13.
5 MHz pullable crystal input to produce a 54 MHz output clock.
MicroClock manufactures the largest variety of Set-Top Box and multimedia clock synthesizers for all applications.
If more clock outputs are needed, see the MK2731 or MK277x family of parts.
Consult MicroClock to eliminate VCXOs, crystals and oscillators from your board.
MK2754 Low Cost 54 MHz VCXO Features • Packaged in 8 pin narrow SOIC • Uses an inexpensive 13.
500 MHz external crystal • On-chip VCXO (patented) with pull range of 200ppm (minimum) • VCXO tuning voltage of 0 to 3V • 25mA output drive capability at TTL levels • Advanced, low power, sub-micron CMOS process • 5V operating voltage Block Diagram VIN X1 13.
5 MHz pullable crystal X2 Voltage Controlled Crystal Oscillator PLL/Clock Synthesis Circuitry Output Buffer 54MHz 1 Revision 011698 Printed 11/16/00 MicroClock Division of ICS•1271 Parkmoor Ave.
•San Jose•CA•95126•(408)295-9800tel•(408)295-9818fax MDS 2754 B I C R O C LOC K Pin Assignment MK2754 Low Cost 54 MHz VCXO MK2754 X1 VDD VIN GND 1 2 3 4 8 7 6 5 X2 GND CLK VDD 8 pin (150 mil) SOIC Pin Descriptions Number 1 2 3 4 5 6 7 8 Name X1 VDD VIN GND VDD CLK GND X2 Description Crystal connection.
Connect to a pullable 13.
5 MHz crystal.
VDD.
Connect to +5V.
Voltage input to VCXO.
Zero to 3V analog input which controls the frequency of the VCXO.
Connect to ground.
VDD.
Connect to +5V.
54 MHz clock output.
Connect to ground.
Crystal connection.
Connect to a pullable 13.
5 MHz crystal.
2 Revision 011698 Printed 11/16/00 MicroClock Division of ICS•1271 Parkmoor Ave.
•San Jose•CA•...

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