
Optoway                          
BTRS-7780C-1590G 
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BTRS-7780C-1590G / BTRL-7780C-1590G 
1590 nm  TX / 1510 nm RX , 3.3V / 1250 Mbps 
RoHS Compliant
 Single-Fiber Transceiver 
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FEATURES 
l
Single Fiber  Bi-Directional Transceiver 
l
1590 nm DFB LD Transmitter 
l
1510 nm Receiver 
l
24 dB Power Budget at Least 
l
Distance Up to 80 km 
l
0 to 70
o
C Operating 
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Speed up to  1300 Mbps 
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LVTTL Signal Detect Output 
l
Single +3.3 V Power Supply 
l
PECL Differential Inputs and Outputs 
l
Wave Solderable and Aqueous Washable 
l
Class 1 Laser International Safety Standard IEC 60825 
Compliant 
APPLICATIONS 
l
WDM Gigabit Ethernet  Links 
l
SONET/SDH Equipment Interconnect 
l
Fiber Channel Links 
ORDER INFORMATION 
P/No.
Bit Rate 
(Gb/s)
(km) 
(nm) 
(nm) 
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OPTOWAY TECHNOLOGY INC.  
No
.3
8, 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         10/1/2005  V2.0 
1 
DESCRIPTION 
The BTRS-7780C-1590G series is high performance 
module for single fiber communications by using 1590 nm 
transmitter and 1510 nm receiver. The transmitter  section  
uses  a  multiple  quantum well  1590 nm DFB laser  and is a 
class 1 laser compliant according to International Safety 
Standard IEC 60825. The receiver section uses an integrated 
1510 nm detector preamplifier (IDP) mounted in an optical 
header and a limiting post-amplifier IC. A PECL logic 
interface simplifies interface to external circuitry. Signal 
Detect with LC-TTL is used. 
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. 
Distance 
TX 
RX 
Voltage 
(V) 
Package 
Temp 
(
o
C) 
TX 
Power 
(dBm) 
3 to -2 
RX Sens. 
(dBm) 
RoHS 
Compliant 
BTRS-7780C-1590G 
Note: 1. BTRS-XXXXX is SFF SC receptacle type package. 
          2. BTRS-XXXXX-APBBB is SFF pigtail type package with different connector, A=S is SC connector, A=F is FC 
connector, A=T is ST connector, A=L is LC connector, A=M is MU connector; BBB is the length of fiber in cm. 
Absolute Maximum Ratings 
Parameter 
Symbol 
Min 
Storage Temperature 
Tstg 
-40 
Operating Temperature 
Topr 
0 
Soldering Temperature 
--- 
Power Supply Voltage 
Vcc 
0 
Input Voltage 
--- 
GND 
Output Current 
Iout 
0 
Recommended Operating Conditions 
Parameter 
Symbol 
Min 
Power Supply Voltage 
Vcc 
3.13 
Operating Temperature 
Topr 
0 
Data Rate 
Power Supply Current 
Icc 
1.25
80 
1590 DFB 
1510 
3.3 
SC, 2X5 
0 to 70 
-26 
Yes 
Max 
85 
70 
260 
4.5 
Vcc 
30 
Units 
o
C 
o
C 
o
C 
V 
V 
mA 
Notes 
Air flow 1m/sec 
10 seconds on leads only 
Typ 
3.3 
1250 
Max 
3.47 
70 
1300 
280 
Units / Notes 
V 
o
C  / air flow 1m/sec 
Mb/s 
mA