MAX3875EHJ-T Maxim Integrated Products, MAX3875EHJ-T Datasheet

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MAX3875EHJ-T

Manufacturer Part Number
MAX3875EHJ-T
Description
Manufacturer
Maxim Integrated Products
Datasheet

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Part Number:
MAX3875EHJ-T
Manufacturer:
MAXIM/美信
Quantity:
20 000
The MAX3875 is a compact, low-power clock recovery
and data retiming IC for 2.488Gbps SDH/SONET appli-
cations. The fully integrated phase-locked loop recov-
ers a synchronous clock signal from the serial NRZ
data input, which is retimed by the recovered clock.
Differential PECL-compatible outputs are provided for
both clock and data signals, and an additional
2.488Gbps serial input is available for system loopback
diagnostic testing. The device also includes a TTL-
compatible loss-of-lock (LOL) monitor.
The MAX3875 is designed for both section-regenerator
and terminal-receiver applications in OC-48/STM-16
transmission systems. Its jitter performance exceeds all
of the SONET/SDH specifications.
This device operates from a single +3.3V to +5.0V supply
over a -40°C to +85°C temperature range. The typical
power consumption is only 400mW with a +3.3V supply. It is
available in a 32-pin TQFP package, as well as in die form.
19-4789; Rev 0; 10/98
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
SDH/SONET Receivers and Regenerators
Add/Drop Multiplexers
Digital Cross-Connects
2.488Gbps ATM Receiver
Digital Video Transmission
SDH/SONET Test Equipment
PHOTO-
DIODE
IN
+3.3V
____________________________________________________________ Maxim Integrated Products
PRE/POSTAMPLIFIER
V
CC
MAX3866
General Description
LOP
Clock Recovery and Data Retiming IC
0.01µF
TTL
OUT+
OUT-
0.01µF
LOOPBACK
SYSTEM
Applications
+3.3V
SDI+
SDI-
SLBI-
SLBI+
V
CC
SIS
TTL
PHADJ+
2.5Gbps, Low-Power, +3.3V
FIL+
MAX3875
1µF
PHADJ-
FIL-
SCLKO+
SCLKO-
o Exceeds ANSI, ITU, and Bellcore SONET/SDH
o 400mW Power Dissipation (at +3.3V)
o Clock Jitter Generation: 0.003UI
o Single +3.3V or +5V Power Supply
o Fully Integrated Clock Recovery and Data Retiming
o Additional High-Speed Input Facilitates System
o Tolerates >2000 Consecutive Identical Digits
o Loss-of-Lock Indicator
o Differential PECL-Compatible Data and Clock
Pin Configuration appears at end of data sheet.
* Dice are designed to operate over this range, but are tested
TTL
LOL
SDO+
MAX3875EHJ
MAX3875E/D
and guaranteed at T
availability.
SDO-
Regenerator Specifications
Loopback Diagnostic Testing
Outputs
PART
+3.3V
130Ω
82Ω
Typical Application Circuit
130Ω
82Ω
A
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
= +25°C only. Contact factory for
+3.3V
130Ω
82Ω
Ordering Information
130Ω
82Ω
DESERIALIZER
+3.3V
MAX3885
RMS
PIN-PACKAGE
32 TQFP
Dice*
1:16
Features
12-91

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MAX3875EHJ-T Summary of contents

Page 1

... Loopback Diagnostic Testing o Tolerates >2000 Consecutive Identical Digits o Loss-of-Lock Indicator o Differential PECL-Compatible Data and Clock Outputs Applications PART MAX3875EHJ MAX3875E/D * Dice are designed to operate over this range, but are tested and guaranteed at T availability. Pin Configuration appears at end of data sheet. +3.3V ...

Page 2

... Continuous Power Dissipation (T TQFP (derate 16.1mW/°C above +85°C) ........................1.0W - 0.5V 0.5V) Operating Temperature Range CC MAX3875EHJ..................................................-40°C to +85°C Operating Junction Temperature (die) ..............-55°C to +150°C + 0.5V) Storage Temperature Range .............................-60°C to +160°C CC Processing Temperature (die) .........................................+400°C Lead Temperature (soldering, 10sec) .............................+300° ...

Page 3

Clock Recovery and Data Retiming IC AC ELECTRICAL CHARACTERISTICS (V = +3.0V to +5.5V -40°C to +85°C, unless otherwise noted. Typical values are at +3.3V and PARAMETER SYMBOL Serial Output Clock Rate Clock-to-Q Delay Jitter ...

Page 4

Low-Power, +3.3V Clock Recovery and Data Retiming +3.3V +25°C, unless otherwise noted JITTER TOLERANCE vs. INPUT VOLTAGE 0.8 JITTER FREQUENCY 0.7 = 1MHz 0.6 0.5 JITTER FREQUENCY 0.4 = 5MHz 0.3 0.2 ...

Page 5

Clock Recovery and Data Retiming IC PIN NAME 19 SCLKO+ Positive Serial Clock Output, PECL, 2.488GHz. SDO+ is clocked out on the rising edge of SCLKO+. 22 SDO- Negative Data Output, PECL compatible, 2.488Gbps 23 SDO+ Positive Data Output, PECL ...

Page 6

Low-Power, +3.3V Clock Recovery and Data Retiming IC Frequency Detector The digital frequency detector (FD) aids frequency acquisition during start-up conditions. The frequency difference between the received data and the VCO clock is derived by sampling the in-phase and ...

Page 7

Clock Recovery and Data Retiming IC Input and Output Terminations The MAX3875’s digital outputs (SDO+, SDO-, SCLKO+, SCLKO-) are designed to interface with PECL signal levels important to bias these ports appropriately. A circuit that provides a Thevenin ...

Page 8

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12-98 _________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 1998 Maxim Integrated Products ...

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