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Clock Rate Adapters



DATA SHEETS
Part Number Description Key Advantages
MAX9476 Low-Jitter, 8kHz Reference Clock Synthesizer Outputs 35.328MHz

Clock Generator is Optimized for xDSL CO Line Cards and Telecom Systems Requiring Low-Jitter Clock Outputs
DS26528 Octal T1/E1/J1 Transceiver

DS26503 T1/E1/J1 BITS Element

DS26502 T1/E1/J1/64KCC BITS Element

Industry's Only 64kHz Composite-Clock Transceivers
DS26524 Quad T1/E1/J1 Transceiver

Low-Power, Low-Cost SCT Pin and Software Compatible with the Octal DS26528 and Makes Migration to Higher Ports Easy, Available in Lead-Free Packages
DS26401 Octal T1/E1/J1 Framer

DS21448 3.3V E1/T1/J1 Quad Line Interface

3.3V E1/T1/J1 Quad Line Interface Unit for Short-Haul and Long-Haul Applications
DK2000 High-Performance Demo Kit Motherboard

DK101 Low-Cost Demo Kit Motherboard

DS21Q55, DS21Q55N Quad T1/E1/J1 Transceiver

DS21600, DS21602, DS21604 3.3V/5V Clock Rate Adapter

DS21Q50 Quad E1 Transceiver

E1 Quad Transceiver Contains All the Functions Necessary for Connecting to Four E1 Lines



Key Specifications:

Clock Generators
Part Number Applications fIN
(MHz)
fIN
(MHz)
fOUT
(MHz)
fOUT
(MHz)
Fixed or Continuous Frequency Output Levels Out-
puts
PLLs Spread Spectrum Output Jitter
(ps)
VSUPPLY
(V)
Package/Pins
min max min max RMS
MAX9476 
T1/E1
T3/E3
xDSL
0.008 0.008 35.328 35.328 Fixed LVCMOS 6 1 No 4 3.3
TSSOP/24
See All Clock Generators (34)

T/E Carrier & Packetized Products
Part Number Transmission Standard Functions Channels In-to-Out Clocks
(MHz)
VSUPPLY
(V)
EV Kit RoHS Available Package/Pins Smallest Available Pckg.
(mm2)
max w/pins
DS26524  T1/E1/J1 Framer + LIU 4 External Master Clock can be a multiple of 1.544 or 2.048 3.3 Yes Yes
CSBGA/256
289
DS26528  T1/E1/J1 Framer + LIU 8 External Master Clock can be a multiple of 1.544 or 2.048 3.3 Yes Yes
CSBGA/256
289
DS26502 
64kHz - G.703 II.1 Japanese 64kHz Clock
64kHz - G.703 II.2 Japanese 6312kHz Clock
64kHz Composite Clock - G.703 Level A
T1/E1/J1
BITS Element 1
0.064
1.544
2.048
6.312
19.44
3.3 Yes Yes
LQFP/64
148.8
DS26503  T1/E1/J1 BITS Element 1
1.544
2.048
6.312
3.3 Yes Yes
LQFP/64
148.8
DS26401  T1/E1/J1 Framer 8 - 3.3 Yes Yes
CSBGA/256
289
DK2000 
ATM
E1
STS-1
T1/E1/J1
T1/J1
T3/E3
- - -
3.3
5
- Yes
See Data Sheet
-
DS21448  T1/E1/J1 LIU 4 - 3.3 Yes Yes
LQFP/128
TEPBGA/144
289
DS21Q50  E1 Framer + LIU 4 - 3.3 - Yes
LQFP/100
262.4
DS21600  T1/E1/J1 Clock Rate Adapter 1
1.544 to 2.048 & 6.144
2.048 to 1.544 & 6.176
3.3
5
- Yes
PDIP(N)/8
SOIC(W)/16
79.7
DS21602  T1/E1/J1 Clock Rate Adapter 1
1.544 to 2.048 & 8.192
2.048 to 1.544 & 6.176
3.3
5
- Yes
PDIP(N)/8
SOIC(W)/16
79.7
DS21604  T1/E1/J1 Clock Rate Adapter 1
1.544 to 4.096 & 8.192
4.096 to 1.544 & 6.176
3.3
5
- No
PDIP(N)/8
SOIC(W)/16
111.8
See All T/E Carrier & Packetized Products (100)





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