mk2754 Holt Integrated Circuits, Inc., mk2754 Datasheet

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mk2754

Manufacturer Part Number
mk2754
Description
Cost Vcxo
Manufacturer
Holt Integrated Circuits, Inc.
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
mk2754S
Manufacturer:
UCLOCK
Quantity:
20 000
MDS 2754 B
MicroClock Division of ICS•1271 Parkmoor Ave.•San Jose•CA•95126•(408)295-9800tel•(408)295-9818fax
Block Diagram
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 Phase-
Locked 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.
Description
13.5 MHz
pullable
crystal
VIN
I C R O
X1
X2
Controlled
Oscillator
Voltage
Crystal
C
LOC K
PLL/Clock
Synthesis
Circuitry
1
• Packaged in 8 pin narrow SOIC
• Uses an inexpensive 13.500 MHz external crystal
• On-chip VCXO (patented) with pull range of
• VCXO tuning voltage of 0 to 3V
• 25mA output drive capability at TTL levels
• Advanced, low power, sub-micron CMOS process
• 5V operating voltage
Features
200ppm (minimum)
Low Cost 54 MHz VCXO
Output
Buffer
Revision 011698
54MHz
MK2754
Printed 11/16/00

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mk2754 Summary of contents

Page 1

... 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 input voltage to vary the output clocks by ±100 ppm. Using MicroClock’ ...

Page 2

... MDS 2754 B MicroClock Division of ICS•1271 Parkmoor Ave.•San Jose•CA•95126•(408)295-9800tel•(408)295-9818fax C LOC K MK2754 GND VDD 3 6 VIN CLK 4 5 GND VDD 8 pin (150 mil) SOIC 2 MK2754 Low Cost 54 MHz VCXO Revision 011698 Printed 11/16/00 ...

Page 3

... External Components The MK2754 requires a minimum number of external components for proper operation. A decoupling capacitor of 0.1µF should be connected between VDD and GND on pins 2 and 4, as close to the MK2754 as possible. A series termination resistor of 33 may be used for the clock output. The input crystal must be connected as close to the chip as possible ...

Page 4

... LOC 45° Marking Shipping packaging MK2754S tubes MK2754S tape and reel Status Comments Advance Original Final Updated pkg height. 4 MK2754 Low Cost 54 MHz VCXO Inches Inches Millimeters Millimeters Symbol Min Max Min A 0.055 0.070 1.397 b 0.013 0.019 0.330 D ...

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