RoHS compliant
1310 nm Multi-mode Transceiver (2km)
Small Form Pluggable (SFP), 3.3V
155 Mbps ATM/125 Mbps Fast Ethernet
Features
RoHS compliant
Compliant with Fast Ethernet standard
Industry standard small form pluggable (SFP)
package
Duplex LC connector
Differential LVPECL inputs and outputs
Single pow er supply 3.3V
TTL signal detect indicator
Hot Pluggable
Class 1 laser product complies with EN 60825-1
Application
Distributed multi-processing
Switch to switch interface
High speed I/O for file server
Bus extension application
Channel extender, data storage
Ordering Information
PART NUMBER INPUT/OUTPUT SIGNAL DETECT VOLTAGE TEMPERATURE
LM38-A3S-TC-N AC/AC TTL 3.3V
LM38-A3S-TI-N AC/AC TTL 3.3V
-10°C to 70 °C
°
-40°C to 85
C
Absolute Maximum Ratings
PARAMETER SYMBOL MIN MAX UNITS NOTE
Storage Temperature TS
Supply Voltag e Vcc
Input Voltage VIN
Output Current Io --- 50 mA
−
40
−0.5
−
0.5
85
4.0 V
Vcc V
°
C
Operating Current IOP --- 400 mA
Page 1 of 10
Version 1.0
Date: 11/02/2005
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 Multi-mode Transceiver (2km)
Small Form Pluggable (SFP), 3.3V
155 Mbps ATM/125 Mbps Fast Ethernet
Recommended Operating Conditions
PARAMETER SYMBOL MIN MAX UNITS NOTE
Case Operating Temperature TC
-10 70 LM38-A3S-TC-N
-40 85
Supply Voltage Vcc 3.1 3.5 V
°
C
LM38-A3S-TI-N
Supply Current ITX + I
RX
--- 300 mA
Transmitter Electro-optical Characteristics
Vcc = 3.1 V to 3.5 V, TC = -10
°
PARAMETER SYMBOL MIN TYP. MAX UNITS NOTE
Data Rate B 10 155 200 Mb/s
Output Optical Power
µ
62.5/125
m fiber
Output Optical Power
µ
50/125
m fiber
Extinction Ratio ER 10 --- --- dB
Center W avel ength
Spectral Width (FWHM)
Rise/Fall Time (10−90%)
Differential Input Voltage V
C to 70
°
C (-40
°
Pout
Pout
λ
C
∆
λ
--- --- 3 ns
T
r, f
0.4 --- 2.0 V
DIFF
C to 85
°
C)
−
20
−23.5
---
−
14
--- -14 dBm Average
dBm Average
1270 1310 1380 nm
Fig 1 nm
Page 2 of 10
Version 1.0
Date: 11/02/2005
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 Multi-mode Transceiver (2km)
Small Form Pluggable (SFP), 3.3V
155 Mbps ATM/125 Mbps Fast Ethernet
Fig 1 LED spectral width limit
Page 3 of 10
Version 1.0
Date: 11/02/2005
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 Multi-mode Transceiver (2km)
Small Form Pluggable (SFP), 3.3V
155 Mbps ATM/125 Mbps Fast Ethernet
Receiver Electro-optical Characteristics
Vcc = 3.1 V to 3.5 V, TC = -10
PARAMETER SYMBOL MIN TYP. MAX UNITS NOTE
Data Rate B 10 155 200 Mb/s
Optical Input Power -maximum PIN -8 --- --- dBm Note 1
Optical Input Power –minimum
(Sensitivity)
Operating Center Wavelength
Data Output Rise, Fall Time
(10%~90%)
Loss of Signal-Asserted PA --- ---
°
C to 70
°
°
C(-40
P
--- ---
IN
λ
C
T
--- 1 2 ns
r, f
C to 85
°
C)
−
31
dBm Note 1
1260 --- 1600 nm
−
32
dBm Average
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
P
− PD
A
0.5 --- 1.8 V
DIFF
RX_LOS
RX_LOS
Note 1: The input data is at 155.52 Mbps, 2
recommendation G.958 Appendix 1. The receiver is guaranteed to provide output data with Bit Error Rate (BER) better
than or equal to 1 × 10
–10
.
−47
--- --- dBm Average
1.0 --- --- dB
0 --- 0.5 V
L
2.4 --- VCC V
H
23
−
1 PRBS data pattern with 72 “1”s and 72 “0”s inserted per the ITU-T
Page 4 of 10
Version 1.0
Date: 11/02/2005
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 Multi-mode Transceiver (2km)
Small Form Pluggable (SFP), 3.3V
155 Mbps ATM/125 Mbps Fast Ethernet
Block Diagram of Transceiver
DATA
DATA/
TX_DISABLE
TX_FAULT
(0)
(1)
(2)
ELECTRICAL SUBASSEMBLY
LD Driver
&
Fault Sense
MOD_DEF
LASER
OPTICAL
SUB-
ASSEMBLIES
DUPLEX SC
RECEPTACLE
DATA
DATA/
RX_LOS
POST-Amp
&
LOS Detect
RRE-
AMPLIFIER
IC
Photo
Diode
TOP VIEW (Label side)
Transmitter Section
The transmitter section consists of a 1310 nm LED in an eye safe optical subassembly (OSA) which mates to the fiber 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 5 of 10
Version 1.0
Date: 11/02/2005
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
Dimensions
RoHS compliant
1310 nm Multi-mode Transceiver (2km)
Small Form Pluggable (SFP), 3.3V
155 Mbps ATM/125 Mbps Fast Ethernet
Page 6 of 10
Version 1.0
Date: 11/02/2005
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 Multi-mode Transceiver (2km)
Small Form Pluggable (SFP), 3.3V
155 Mbps ATM/125 Mbps Fast Ethernet
SFP host board mechanical layout
X
Y
L
SXY
A
X
A S
1
PIN1
1
X
A S
L
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
PIN1
B S
AS
B S
AS
B S
Unit: mm
Page 7 of 10
Version 1.0
Date: 11/02/2005
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
Assembly drawing
RoHS compliant
1310 nm Multi-mode Transceiver (2km)
Small Form Pluggable (SFP), 3.3V
155 Mbps ATM/125 Mbps Fast Ethernet
1.7±0.9
3.5±0.3
41.73±0.5
PCB
15.0 MAX
CAGE ASSEMBLY
9.8 MAX
11.0 REF.
BEZEL
BELOW PCB
0.4±0.1
15.25±0.1
10.4±0.1
16.25±0.1
MSA-SPECIFIED BEZEL
PCB
Page 8 of 10
Version 1.0
Date: 11/02/2005
DIMENSIONS ARE IN MILLIMETERS
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
Pin Assignment
Pin-Out
RoHS compliant
1310 nm Multi-mode Transceiver (2km)
Small Form Pluggable (SFP), 3.3V
155 Mbps ATM/125 Mbps Fast Ethernet
PIN 11
PIN 10
PIN 20
PIN 1
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
Page 9 of 10
Version 1.0
Date: 11/02/2005
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 Multi-mode Transceiver (2km)
Small Form Pluggable (SFP), 3.3V
155 Mbps ATM/125 Mbps Fast Ethernet
Eye Safety Mark
The LM3 series Multi-mode transceiver is a class 1 LED
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.
Page 10 of 10
Version 1.0
Date: 11/02/2005
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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