LC-155Bxxxxxxx
155Mbps, SFF LC Duplex Optical Transceiver Module for
Fast Ethernet, ATM, SONET/OC-3, SDH/STM-1
Features:
Full Compliance with the Optical Performance
Requirements of the ATM 100Mbps and 100
Base-FX Version of IEEE 802.3u.
Multi-Source 2×5 package styles with LC
Receptacle.
Single 3.3V Power Supply.
PECL Differential Inputs and Outputs.
PECL (LC-155B2xxxxxx Series) or TTL
(LC-155B4xxxxxx Series) Receiver Signal
Detect Indicator.
RoHS Compliance
Wave Solder and Aqueous Wash Process
Compatible.
Description:
The LC-155Bxxxxxxx series are SFF (Small Form
Factor) optical transceiver modules designed
expressly for high-speed communication applications
that require rates of up to 155Mbps. They are all
compliant with the SONET/SDH standards.
The LC-155Bxxxxxxx transceivers are supplied in 2
×5
DIP package style with duplex LC connector and
are fully compliant with SFF Multi-Source Agreement
(MSA).
The LC-155Bxxxxxxx transceivers can meet Class-1
eye safety standard and effective distance depending
on ITU-T G.957 standard or power penalty.
The transmitter sections utilize 1310nm Edge Emitting
InGaAsP Laser Diode. This Laser Diode is packaged
in the optical subassembly portion of the transmitter
section. A custom silicon IC that converts differential
PECL logical signals into an analog LD driving current
drives it.
The receiver sections utilize InGaAs PIN photodiodes
coupled into a custom silicon trans-impedance
preamplifier IC. These are packaged in the optical
subassembly portion of receiver.
These PIN / Preamplifier combinations are coupled
into a custom quantizer IC which provides the final
pulse shaping for the logic output and the Signal
Detect function. The data output is differential. The
signal detect output is single-ended.
Application:
Single-mode Fiber Backbone Links.
Fast Ethernet and ATM Compatible.
Single-mode Fiber Media Converter.
DELTA ELECTRONICS, INC.
http://www.deltaww.com
1
Jan., 2008
Rev.：0H
LC-155Bxxxxxxx
Absolute Maximum Ratings
Parameter
Storage Temperature
Lead Soldering Temperature
Lead Soldering Time
Supply Voltage
Symbol
Ts
T
SOLD
t
SOLD
V
CC
Min.
-40
Typ.
Max.
85
260
10
5
Unit
ºC
ºC
Sec.
V
Note
0
Recommended Operating Conditions
Parameter
Data Rate
Ambient Operating Temperature
Supply Voltage
Note: See “Order Information” for detail
Symbol
T
A
V
CC
Min.
100
0
3.15
Typ.
155.52
3.3
Max.
200
70
3.45
Unit
Mbps
ºC
V
Note
1
Electrical Characteristics
Parameter
Transmitter
Transmitter Data Input Voltage-Low
Transmitter Data Input Voltage-High
Transmitter Disable Input-Low
Transmitter Disable Input High
Receiver
Data Output Voltage-Low
Data Output Voltage-High
SD Output Voltage-Low
SD Output Voltage-High
SD Output Voltage-Low
SD Output Voltage-High
Symbol
V
IL
-V
CC
V
IH
-V
CC
V
DISL
V
DISH
V
OL
-V
CC
V
OH
-V
CC
V
SDL
-V
CC
V
SDH
-V
CC
V
SDL
V
SDH
Min.
-1.81
-1.16
0
2
-1.95
-1.045
-1.95
-1.045
0
2
Typ.
Max.
-1.48
-0.88
0.8
Vcc
-1.62
-0.74
-1.62
-0.74
0.8
Vcc
Unit
V
V
V
V
V
V
V
V
V
V
Note
ECL Family
LVTTL
Optical Characteristics
（Data
Rate = 155.52Mbps, PRBS=2
23
-1, NRZ, 9/125um SMF）
Parameter
Symbol
Min.
Typ.
Transmitter
Supply Current
Icc
-15
Mean Launch Power
Po
-5
Optical Extinction Ratio
E.R.
9
λ
C
1280
1310
Center Wavelength
Spectral Width (RMS)
Output Eye Diagram
Receiver
Supply Current
Sensitivity
Overload
Signal Detect-Asserted
Icc
P
IN
P
SAT
P
A
-8
-10
σ
Max.
150
-8
0
1340
7.7
3
Unit
mA
dBm
dB
nm
nm
Note
LC-155BxMxxxxx
LC-155BxMxxxxx
Compliant with ITU-T recommendation G.957
150
-31
-34
mA
dBm
dBm
-31
-34
dBm
LC-155BxMxxxxx
LC-155BxMxxxxx
LC-155BxMxxxxx
Signal Detect-DeAsserted
P
D
-45
dBm
Signal Detect-Hysteresis
P
A
-P
D
0.5
dB
-10
Note: The sensitivity should be tested at a BER of 1×10 or better with an input signal consisting of 155Mbps,
NRZ, 2
23
-1 PRBS and E.R.=9dB.
DELTA ELECTRONICS, INC.
http://www.deltaww.com
2
Jan., 2008
Rev.：0H
LC-155Bxxxxxxx
Mask of the eye diagram for the optical transmit signal
Pin Definition
PIN
1
2
3
4
5
6
7
8
9
10
Symbol
GND
VccR
SD
RD(-)
RD(+)
VccT
GND
TxDis
TD (+)
TD (-)
Receiver Signal Ground
Receiver Power Supply
Receiver Signal Detect (LVPECL or LVTTL)
Receiver Data Out Inverted (LVPECL)
Receiver Data Out Non-inverted (LVPECL)
Transmitter Power Supply
Transmitter Signal Ground
Transmitter Disable
Transmitter Data In Non-inverted (LVPECL)
Transmitter Data In Inverted (LVPECL)
Functional description
Pin Out Drawing
DELTA ELECTRONICS, INC.
http://www.deltaww.com
3
Jan., 2008
Rev.：0H
LC-155Bxxxxxxx
Recommended Circuit Schematic
R1=R3=82 ohm (3.3V),68 ohm(5V)
R2=R4=130 ohm (3.3V),191 ohm (5V)
R5=R6=150 ohm (3.3V),270 ohm (5V)
R7=130 ohm (3.3V PECL),82 ohm(5V),NC (TTL)
R8=82 ohm (3.3V PECL),130 ohm(5V),NC (TTL)
C1=C2=C3=C4=C5=C6=C7=100 nF
C8=C9=10uF
L1=L2=1uH
DELTA ELECTRONICS, INC.
http://www.deltaww.com
4
Jan., 2008
Rev.：0H
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