mk2049-01 ETC-unknow, mk2049-01 Datasheet
mk2049-01
Manufacturer Part Number
mk2049-01
Description
Communications Clock
Manufacturer
ETC-unknow
Datasheet
1.MK2049-01.pdf
(11 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
mk2049-01STR
Manufacturer:
MICROCLO
Quantity:
20 000
MDS 2049-01 J
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose • CA • 95126 • (408)295-9800tel •www.icst.com
Reference
Crystal
The MK2049 is a Phase-Locked Loop (PLL) based
clock synthesizer, which accepts an 8 kHz clock
input as a reference and generates T1, E1, T3, E3,
and OC3 frequencies. The device can also accept a
T1, E1, T3, or E3 input clock and provide the
same output for loop timing. All outputs are
frequency locked together and to the input. This
allows for the generation of locked clocks to an
8 kHz backplane clock, simplifying clock
distribution in communications systems.
MicroClock can customize this device for many
other different frequencies. Contact your
MicroClock representative for more details.
For a fixed input-output phase relationship, refer
to the MK2049-02, -03, or -3x. The MK2049-3x
are 3.3 V devices.
Description
Block Diagram
Clock
FS3:0
Input
4
X1
X2
Oscillator
Crystal
VDD GND
4
External/
Timing
Loop
Mux
4
1
CAP1
Features
• Packaged in 20 pin SOIC
• Meets the TR62411, ETS300 011, and GR-1244
• Accepts multiple inputs: 8 kHz backplane clock or
• Locks to 8 kHz ±100 ppm (External mode)
• Exact internal ratios eliminate the need for external
• Zero ppm synthesis error in all output clocks.
• Output clock rates include T1, E1, T3, E3, and
• 5 V ±5% operation
• Offered in Commercial and Industrial temperature
versions
specification for MTIE, Pull-in/Hold-in Range,
Phase Transients, and Jitter Generation for
Stratum 3, 4, and 4E
Loop Timing frequencies
dividers
OC3÷8
Control, and
Attenuation
Synthesis,
Circuitry
Communications Clock PLL
Clock
Jitter
PLL
CAP2
Output
Output
Output
Buffer
Buffer
Buffer
MK2049-01
Revision 040601
CLK1
CLK2
8 kHz
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