RoHS compliant
1310 nm Single-mode Transceiver (S1.1)
Small Form Pluggable (SFP), 3.3V
155 Mbps SONET OC-3/SDH STM-1/125 Mbps Fast Ethernet
Features
RoHS compliant
Compliant with SONET/SDH standard
Compliant with Fast Ethernet standard
I ndustry standard small form pluggable (SFP)
package
Duplex LC connector
Di fferential LVPECL inputs and outputs
Single power s upply 3.3V
T TL signal detect indicator
Hot Pluggable
Class 1 laser product complies with EN 60825-1
Ordering Information
PART NUMBER INPUT/OUTPUT SIGNAL DETECT VOLTAGE TEMPERATURE
°
LS38-A3S-TC-N AC/AC TTL 3.3V
LS38-A3S-TI-N AC/AC TTL 3.3V
0°C to 70
-40°C to 85 °C
C
Absolute Maximum Ratings
PARAMETER SYMBOL MIN MAX UNITS NOTE
Storage Temperature TS
Supply Voltage Vcc
Input Voltage VIN
Output Current Io --- 50 mA
Operating Current IOP --- 400 mA
−40
−
0.5
−0.5
85
4.0 V
Vcc V
°
C
Page 1 of 9
Version 1.0
Date: 11/30/2005
Headquarters :
12 Shyr Jiann Road, Hsinchu Industrial Park, Hukow,
Hsinchu Hsien,, Taiwan 303
TEL: +886-3-5986799
FAX: +886-3-5986655
Website: www.apacoe.com.tw
RoHS compliant
1310 nm Single-mode Transceiver (S1.1)
Small Form Pluggable (SFP), 3.3V
155 Mbps SONET OC-3/SDH STM-1/125 Mbps Fast Ethernet
Recommended Operating Conditions
PARAMETER SYMBOL MIN MAX UNITS NOTE
Case Operating Te mperature TC
0 70 LS38-A3S-TC-N
-40 85
°
C
LS38-A3S-TI-N
Supply Voltage Vcc 3.1 3.5 V
Supply Current ITX + I
RX
--- 300 mA
Transmitter Electro-optical Characteristics
Vcc = 3.1 V to 3.5 V, TC = 0
°
PARAMETER SYMBOL MIN TYP. MAX UNITS NOTE
Data Rate B 50 155 200 Mb/s
Output Optical Power
µ
9/125
m fiber
Extinction Ratio ER 8.2 --- --- dB
Center W avel ength
Spectral Width (RMS)
C to 70
°
C (-40
°
Pout
λ
C
∆
λ
C to 85
°
C)
−
15
--- -8 dBm Average
1261 1310 1360 nm
--- --- 4.0 nm
T
Rise/Fall Time (10−90%)
Max. P
TX-DISABLE Asserted P
out
--- 1 2 ns
r, f
--- ---
OFF
−
45
dBm
Output Eye Compliant with Telcordia GR-253-CORE Issue 3 and ITU-T recommendation G-957
Differential Input Voltage V
Page 2 of 9
Version 1.0
Date: 11/30/2005
0.4 --- 2.0 V
DIFF
Headquarters :
12 Shyr Jiann Road, Hsinchu Industrial Park, Hukow,
Hsinchu Hsien,, Taiwan 303
TEL: +886-3-5986799
FAX: +886-3-5986655
Website: www.apacoe.com.tw
RoHS compliant
1310 nm Single-mode Transceiver (S1.1)
Small Form Pluggable (SFP), 3.3V
155 Mbps SONET OC-3/SDH STM-1/125 Mbps Fast Ethernet
Receiver Electro-optical Characteristics
Vcc = 3.1 V to 3.5 V, TC = 0
°
PARAMETER SYMBOL MIN TYP. MAX UNITS NOTE
Data Rate B 50 155 200 Mb/s
Optical Input Power -maximum PIN 0 --- --- dBm Note 1
Optical Input Power –minimum
(Sensitivity)
Operating Center Wavelength
Data Output Rise, Fall Time
(10%~90%)
Loss of Signal-Asserted PA --- ---
Loss of Signal-Deasserted PD
Loss of Signal-Hysteresis
Differential Output Voltage V
Receiver Loss of Signal Output
Voltage-Low
Receiver Loss of Signal Output
Voltage-High
Note 1: The input data is at 155.52 Mbps, 2
Error Rate (BER) better than or equal to 1 × 10
C to 70
°
C (-40
P
λ
T
P
A
DIFF
RX_LOS
RX_LOS
°
--- ---
IN
C
--- 1 2 ns
r, f
− PD
C to 85
°
C)
−
34
dBm Note 1
1260 --- 1600 nm
dBm
−45
−
34
--- --- dBm
1.0 --- --- dB
0.5 --- 1.2 V
0 --- 0.5 V
L
2.4 --- VCC V
H
23
−
1 PRBS data pattern. The receiver is guaranteed to provide output data with Bit
–10
.
Page 3 of 9
Version 1.0
Date: 11/30/2005
Headquarters :
12 Shyr Jiann Road, Hsinchu Industrial Park, Hukow,
Hsinchu Hsien,, Taiwan 303
TEL: +886-3-5986799
FAX: +886-3-5986655
Website: www.apacoe.com.tw
RoHS compliant
1310 nm Single-mode Transceiver (S1.1)
Small Form Pluggable (SFP), 3.3V
155 Mbps SONET OC-3/SDH STM-1/125 Mbps Fast Ethernet
Block Diagram of Transceiver
ELECTRICAL SUBASSEMBLY
DATA
DATA/
TX_DISABLE
TX_FAULT
(0)
(1)
(2)
DATA
DATA/
RX_LOS
Transmitter Section
The transmitter section consists of a 1310 nm InGaAsP laser in an eye safe optical subassembly (OSA) which mates to the fiber
LD Driver
&
Fault Sense
MOD_DEF
POST-Amp
&
LOS Detect
LASER
OPTICAL
SUB-
ASSEMBLIES
RRE-
AMPLIFIER
IC
TOP VIEW (Label side)
RECEPTACLE
Photo
Diode
DUPLEX SC
cable. The laser OSA is driven by a LD driver IC which converts differential input LVPECL logic signals into an analog laser
driving current.
TX_DISABLE
The TX_DISABLE signal is high (TTL logic “1”) to turn off the laser output. The laser will turn on when TX_DISABLE is low
(TTL logic “0”).
Receiver Section
The receiver utilizes an InGaAs PIN photodiode mounted together with a trans-impedance preamplifier IC in an OSA. This OSA
is connected to a circuit providing post-amplification quantization, and optical signal detection.
Receive Loss (RX_LOS)
The RX_LOS is high (logic “1”) when there is no incoming light from the companion transceiver. This signal is normally used by
the system for the diagnostic purpose. The signal is operated in TTL level.
Page 4 of 9
Version 1.0
Date: 11/30/2005
Headquarters :
12 Shyr Jiann Road, Hsinchu Industrial Park, Hukow,
Hsinchu Hsien,, Taiwan 303
TEL: +886-3-5986799
FAX: +886-3-5986655
Website: www.apacoe.com.tw
RoHS compliant
1310 nm Single-mode Transceiver (S1.1)
Small Form Pluggable (SFP), 3.3V
155 Mbps SONET OC-3/SDH STM-1/125 Mbps Fast Ethernet
Dimensions
Page 5 of 9
Version 1.0
Date: 11/30/2005
DIMENSIONS ARE IN MILLIMETERS
ALL DIMENSIONS ARE 0.2mm UNLESS OTHERWISE SPECIFIED
Unit: mm
Headquarters :
12 Shyr Jiann Road, Hsinchu Industrial Park, Hukow,
Hsinchu Hsien,, Taiwan 303
TEL: +886-3-5986799
FAX: +886-3-5986655
Website: www.apacoe.com.tw
RoHS compliant
1310 nm Single-mode Transceiver (S1.1)
Small Form Pluggable (SFP), 3.3V
155 Mbps SONET OC-3/SDH STM-1/125 Mbps Fast Ethernet
SFP host board mechanical layout
X
Y
L
SXY
A
X
A S
1
PIN1
1
X
A S
L
Page 6 of 9
Version 1.0
Date: 11/30/2005
AS
PIN1
B S
LEGEND
1.PADS AND VIAS ARE CHASSIS GROUND
2.THROUGH HOLES, PLATING OPTIONAL
3.HATCHED AREA DENOTES COMPONENT
AND TRACE KEEPOUT(EXCEPT CHASSIS
GROUND)
4.AREA DENOTES COMPONENT KEEPOUT
(TRACES ALLOWED)
DIMENSIONS ARE IN MILLIMETERS
AS
B S
AS
B S
Unit: mm
Headquarters :
12 Shyr Jiann Road, Hsinchu Industrial Park, Hukow,
Hsinchu Hsien,, Taiwan 303
TEL: +886-3-5986799
FAX: +886-3-5986655
Website: www.apacoe.com.tw
RoHS compliant
1310 nm Single-mode Transceiver (S1.1)
Small Form Pluggable (SFP), 3.3V
155 Mbps SONET OC-3/SDH STM-1/125 Mbps Fast Ethernet
Assembly drawing
PCB
15.0 MAX
CAGE ASSEMBLY
9.8 MAX
41.73±0.5
3.5±0.3
1.7±0.9
11.0 REF.
BEZEL
BELOW PCB
0.4±0.1
15.25±0.1
10.4±0.1
16.25±0.1
PCB
Page 7 of 9
Version 1.0
Date: 11/30/2005
DIMENSIONS ARE IN MILLIMETERS
MSA-SPECIFIED BEZEL
Unit: mm
Headquarters :
12 Shyr Jiann Road, Hsinchu Industrial Park, Hukow,
Hsinchu Hsien,, Taiwan 303
TEL: +886-3-5986799
FAX: +886-3-5986655
Website: www.apacoe.com.tw
RoHS compliant
1310 nm Single-mode Transceiver (S1.1)
Small Form Pluggable (SFP), 3.3V
155 Mbps SONET OC-3/SDH STM-1/125 Mbps Fast Ethernet
Pin Assignment
Pin-Out
PIN 11
PIN 10
Pin Signal Name Description
1 T
2 TX_FAULT Transmit Fault
3 TX_DISABLE Transmit Disable
4 MOD_DEF (2) SDA Serial Data Signal
5 MOD_DEF (1) SCL Serial Clock Signal
6 MOD_DEF (0) TTL Low
7 RATE SELECT Open Circuit
8 RX_LOS Receiver Loss of Signal, TTL High, open collector
9 R
10 R
11 R
12
13
14 R
15 V
16 V
17 T
18
19
20 T
Transmit Ground
GND
Receiver Ground
GND
Receiver Ground
GND
Receiver Ground
GND
RX−
RX+
Receiver Ground
GND
Receiver Power Supply
CCR
Transmitter Power Supply
CCT
Transmitter Ground
GND
TX+
TX−
Transmitter Ground
GND
Receive Data Bar, Differential PECL, ac coupled
Receive Data, Differential PECL, ac coupled
Transmit Data, Differential PCEL, ac coupled
Transmit Data Bar, Differential PCEL, ac coupled
PIN 20
PIN 1
Page 8 of 9
Version 1.0
Date: 11/30/2005
Headquarters :
12 Shyr Jiann Road, Hsinchu Industrial Park, Hukow,
Hsinchu Hsien,, Taiwan 303
TEL: +886-3-5986799
FAX: +886-3-5986655
Website: www.apacoe.com.tw
RoHS compliant
1310 nm Single-mode Transceiver (S1.1)
Small Form Pluggable (SFP), 3.3V
155 Mbps SONET OC-3/SDH STM-1/125 Mbps Fast Ethernet
Eye Safety Mark
The LS3 series Single-mode transceiver is a class 1 laser
product. It complies with EN 60825-1 and FDA 21 CFR
1040.10 and 1040.11. In order to meet laser safety
requirements the transceiver shall be operated within the
Absolute Maximum Ratings.
Caution
All adjustments have been done at the factory before
the shipment of the devices. No maintenance and user
serviceable part is required. Tampering with and
modifying the performance of the device will result in
voided product warranty.
Note : All information contained in this document is subject to change without notice.
Required Mark
21 CFR 1040.10 and 1040.11
Class 1 Laser Product
Complies with
Page 9 of 9
Version 1.0
Date: 11/30/2005
Headquarters :
12 Shyr Jiann Road, Hsinchu Industrial Park, Hukow,
Hsinchu Hsien,, Taiwan 303
TEL: +886-3-5986799
FAX: +886-3-5986655
Website: www.apacoe.com.tw
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