1
Optoway
LT-74H73H-PG
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LT-74H73H-PG
(RoHS Compliant)
3.3V, 1.25 Gbps 1490 nm Continuous-Mode TX / 1.25 Gbps 1310 nm Burst-Mode RX
2X5 SFF Package, GE-PON OLT Transceiver (IEEE 802.3ah-2004 1000BASE PX20+)
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FEATURES
l Optical Line Terminal (OLT) for IEEE 802.3ah-2004
1000BASE-PX20+
DESCRIPTION
LT-74H73H is an optical transceiver for optical line terminal (OLT)
for IEEE 802.3ah-2004 1000BASE-PX20+ applications. The
LT-74H73H is high performance module for single fiber
communications by using 1490 nm continuous-mode transmitter and
1310 nm high sensitivity burst-mode receiver with settling time less
than 400 ns. The transmitter section uses a 1490 nm DFB laser and is
a class 1 laser compliant according to International Safety Standard
IEC-60825. The receiver section uses an integrated 1310 nm
burst-mode Avalanche photodetector preamplifier mounted in an
optical header and a burst-mode limiting post-amplifier IC. Unlike
the conventional BM RX, the RX does not requires reset pulse to
receive optical data packets with different optical power.
LVPECL interface is used for differential inputs and outputs. A
LVTTL logic interface simplifies interface to external circuitry.
l 1-Fiber Bi-directional 1.25 Gbps WDM Transceiver for 20
km communication
l 1490 nm Continuous-Mode Transmitter
l 1310 nm Burst-Mode (BM) Receiver
l Resetless BM Receiver Design
l BM RX with Transceiver Settling Time less than 400 ns
l High Resistance of BM RX to DC Optical Background
l 0 to 70oC Operating Temperature
l 2x5 SFF Package with SC/PC Pigtail
l Single +3.3 V Power Supply
l RoHS Compliant
l Transmitter: AC Coupling Input
l Receiver: DC Coupling Output
l LVPECL Differential Inputs and Outputs
l LVTTL TX Shutdown Input
l LVTTL TX Laser Failure Alarm Output
l Wave Solderable and Aqueous Washable
l Class 1 Laser International Safety Standard IEC-60825
Compliant
LASER SAFETY
This single mode transceiver is a Class 1 laser product. It
complies with IEC-60825 and FDA 21 CFR 1040.10 and
1040.11. The transceiver must be operated within the
specified temperature and voltage limits. The optical ports of
the module shall be terminated with an optical connector or
with a dust plug.
APPLICATIONS
l Gigabit Ethernet PON System
ORDER INFORMATION
ORDER INFORMATION
P/No
Class
TX
λ (nm)
RX
Temp
(oC)
Package
RoHS
Compliant
Type Speed
(Gb/s)
Power Type Speed λ (nm) Sens.
(dBm)
(Gb/s)
(dBm)
1310 -8 / -30 0 / 70 SFF 2X5 Pig.
LT-74H73H-PG
PX20+ CNT
1.25
1490 DFB
7 / 2 BM, 2R 1.25
Yes
NOTE: 1. LT-XXXXXX-PWXG, SC/PC pigtail with fiber length 50 cm.
2. BM: Burst Mode; CNT: Continuous Mode; SFF: Small Form Factor Package.
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OPTOWAY TECHNOLOGY INC. No.38, Kuang Fu S. Road, Hu Kou, Hsin Chu Industrial Park, Hsin Chu, Taiwan 303
Tel: 886-3-5979798
Fax: 886-3-5979737
E-mail: sales@optoway.com.tw http: // www.optoway.com.tw
3/1/2006 V1.0
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