MAX3876 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – 2.5Gbps, Low-Power, +3.3V Clock Recovery and Data Retiming IC

19-1631; Rev 0; 1/00
2.5Gbps, Low-Power, +3.3V
Clock Recovery and Data Retiming IC
General Description
The MAX3876 is a compact, low-power clock recovery
and data retiming IC for 2.488Gbps SDH/SONET appli-
cations. The fully integrated phase-locked loop (PLL)
recovers a synchronous clock signal from the serial
NRZ data input. The data is retimed by the recovered
clock. Differential CML 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 MAX3876 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 +3.3V or +5.0V single sup-
ply over a -40°C to +85°C temperature range. Power
consumption is typically only 445mW with a +3.3V sup-
ply. The MAX3876 is available in a 32-pin TQFP pack-
age as well as in die form.
Applications
SDH/SONET Receivers and Regenerators
Add/Drop Multiplexers
Digital Cross-Connects
2.488Gbps ATM Receiver
Digital Video Transmission
SDH/SONET Test Equipment
Intrarack/Subrack Interconnects
Features
o Exceeds ANSI, ITU, and Bellcore SONET/SDH
Regenerator Specifications
o 440mW Power Dissipation (at +3.3V)
o Clock Jitter Generation: 3.7mUI_RMS
o +3.3V or +5V Single Power Supply
o Fully Integrated Clock Recovery and Data Retiming
o Additional High-Speed Input Facilitates System
Loopback Diagnostic Testing
o Tolerates >2500 Consecutive Identical Digits
o Loss-of-Lock Indicator
o Differential CML Data and Clock Outputs
Ordering Information
PART
MAX3876EHJ
MAX3876E/D
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
32 TQFP
Dice*
*Dice are designed to operate over this range, but are tested
and guaranteed at T_A = +25°C only. Contact factory for
availability.
Pin Configuration appears at end of data sheet.
Typical Application Circuit
+3.3V
FILT
0.01µF
PHOTO-
DIODE
IN
V_CC
MAX3866
PREAMPLIFIER
0.01µF
OUT+
OUT-
+3.3V
TTL
V_CC
SDI+
LOL
SDO+
SDO-
SDI-
MAX3876
SLBI+
SLBI-
SIS FIL+
SCLKO+
SCLKO-
FIL-
+3.3V
MAX3831
4:1/1:4
TRANSCEIVER
SYSTEM
LOOPBACK
TTL
1µF
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