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MAX3270EMH
155Mbps/622Mbps Clock Recovery and Data Retiming IC with Fully Integrated Phase/Frequency Detector
_______________General DescriptionThe MAX3270 is a complete Clock Recovery and Data
Retiming IC for 155Mbps and 622Mbps SDH/SONET
and ATM applications. The MAX3270 meets Bellcore
and CCITT jitter tolerance specifications ensuring error-
free data recovery. Recovered clock and data are
phase aligned using a fully integrated phase-locked
loop (PLL). An output frequency monitor (FM) is includ-
ed to detect loss of PLL acquisition or a loss of input
data.
The MAX3270 has differential ECL input and output
interfaces, so it is less susceptible to noise in a high-
frequency environment. The fully integrated PLL
includes an integrated phase-frequency detector that
eliminates the need for external references.
________________________Applications155Mbps (STM-1/OC-3)/622Mbps (STM-4/
OC-12) SDH/SONET Transmission Systems
155Mbps/622Mbps ATM/SONET Access Nodes
Add/Drop Multiplexers
Cross-Connects
____________________________FeaturesSupports Both 155Mbps and 622Mbps Clock
Recovery and Data RetimingFully Integrated Phase/Frequency DetectorCapable of Switching to an External ClockDifferential 100K ECL Data and Clock I/OsOutput Monitor Provides Lock DetectionNo External Reference Clock Required
Pin Configuration appears at end of data sheet.
MAX3270
155Mbps/622Mbps Clock Recovery and
Data Retiming IC with Fully Integrated
Phase/Frequency Detector
________________________________________________________________Maxim Integrated Products1
___________________________________________________Typical Operating Circuit
Call toll free 1-800-998-8800 for free samples or literature.19-0379; Rev 0; 3/95
______________Ordering Information
MAX3270
155Mbps/622Mbps Clock Recovery and
Data Retiming IC with Fully Integrated
Phase/Frequency Detector_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS(VEE= -4.5V ±5%, VTTL = 5V ±5%, TA= -40°C to +85°C, unless otherwise noted.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Supply Voltages
VTTL to GND.....................................................-0.5V to +8.0V
VCCto GND.......................................................-0.5V to +8.0V
VEEto GND........................................................-8.0V to +0.5V
SDIP, SDIN, EXC...................................................-8.0V to +0.5V
RDOP, RDON, RCOP, RCON, CRP.......................-8.0V to +0.5V
EXCS, RST, CRS....................................................-0.5V to +8.0V
FILP, FILG, FILN....................................................-8.0V to +0.5V
PHADJ, VR............................................................-8.0V to +8.0V
FM .........................................................................-8.0V to +8.0V
Input Differential Voltage Level, SDIP, SDIN......................+3.0V
Continuous Power Dissipation (TA= +85°C).......................1.3W
Operating Temperature Range...........................-40°C to +85°C
Storage Temperature Range.............................-55°C to +150°C
Lead Temperature (soldering, 10sec).............................+300°C
MAX3270
155Mbps/622Mbps Clock Recovery and
Data Retiming IC with Fully Integrated
Phase/Frequency Detector
_______________________________________________________________________________________3
AC ELECTRICAL CHARACTERISTICS (continued)(VEE= -4.5V, VTTL = 5V, TA= 25°C, unless otherwise noted.)
VEE SUPPLY CURRENT
vs. TEMPERATURE
MAX3270-TOC9
TEMPERATURE (°C)
SUPPLY CURRENT (mA)4060100-2020
__________________________________________Typical Operating Characteristics
CRP FREE-RUNNING FREQUENCY (VCO/16)
vs. DIE TEMPERATURE
MAX3270-TOC5
TEMPERATURE (°C)
FREQUENCY (MHz)405070901030
38.5
MAX3270
155Mbps/622Mbps Clock Recovery and
Data Retiming IC with Fully Integrated
Phase/Frequency Detector_______________________________________________________________________________________
__________________________________________Typical Operating Characteristics0.11k10k100k1M
JITTER TOLERANCE
(155Mbps, 223-1 PRBS)MAX3270-TOC1
FREQUENCY (Hz)
AMPLITUDE (UI p-p)
100
MAX3270
155Mbps/622Mbps Clock Recovery and
Data Retiming IC with Fully Integrated
Phase/Frequency Detector
_______________________________________________________________________________________5
__________________________________________Typical Operating Characteristics
MAX3270
155Mbps/622Mbps Clock Recovery and
Data Retiming IC with Fully Integrated
Phase/Frequency Detector_______________________________________________________________________________________
______________________________________________________________Pin Description
