RoHS Compliant
TX-1310/RX-1550 nm Multi-mode Bi-directional
2km for 62.5/125 or 50/125 MM fiber
SFP LC Simplex Connector, with Diagnostic Monitoring
155 Mbps SONET OC-3/SDH STM-1/125 Mbps Fast EthernetFeatures
 Small form pluggable (SFP) package
 Simplex LC connector
 Differential inputs and outputs
 Single power supply 3.3V
 TTL LOS indicator Hot Pluggable Class 1 laser product complies with EN 60825-1

Ordering Information
PART NUMBER

TX/RX

TEMPERATURE

LD TypeDistance

DB1310-SFP-LC.M

1310/1550

0C to 70 C1310 FP

2kmDB1310-SFP-LC.M(WT)

1310/1550-40 C to 85 C1310 FP

2kmDiagnostics
Parameter

Range

Accuracy

Unit

Temperature-40 to 95±3oVoltage

3.1 to 3.5± 0.1

VBias Current

0 to 90± 10%mATX Power-10 to 0± 3 dBdBm

RX Power-28 to 0± 3 dBdBm

Page 1 of 9
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Date:12/15/2014

Calibration

CWebsite: www.dci.jp

External

RoHS Compliant
TX-1310/RX-1550 nm Multi-mode Bi-directional
2km for 62.5/125 or 50/125 MM fiber
SFP LC Simplex Connector, with Diagnostic Monitoring
155 Mbps SONET OC-3/SDH STM-1/125 Mbps Fast Ethernet

Absolute Maximum Ratings
PARAMETERSYMBOLMIN

MAXUNITS

Storage TemperatureTS4085

C

Supply Voltage

Vcc

0.5

4.0V

Input Voltage

VIN

0.5VccV

SYMBOLMIN

MAXUNITS

Supply Voltage

Vcc

3.1

3.5

V

Supply Current

ITX + IRX---200mA

NOTE

Recommended Operating Conditions
PARAMETER

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NOTE

RoHS Compliant
TX-1310/RX-1550 nm Multi-mode Bi-directional
2km for 62.5/125 or 50/125 MM fiber
SFP LC Simplex Connector, with Diagnostic Monitoring
155 Mbps SONET OC-3/SDH STM-1/125 Mbps Fast Ethernet

Transmitter Electro-optical Characteristics
Vcc = 3.1 V to 3.5 V, TC = 0 C to 70 C (-40 C to 85 C)
PARAMETER
Output Optical Power62.5/125 or 50/125 m fiber

SYMBOLMIN

TYP.

MAXUNITS

NOTE

Pout

10---

0dBm

Average

Extinction Ratio

ER

8.2

------dB

Center Wavelength

C

1261

1310

1360

nm

Spectral Width (RMS)------

7nm

Rise/Fall Time (1090%)

Tr, f---

12ns

Output Eye

Compliant with Telcordia GR-253-CORE Issue 3 and ITU-T recommendation G-957

Max. Pout TX-DISABLE AssertedPOFF------

45

dBm

Differential Input Voltage

VDI FF

0.4---2.0VTransmit Fault Output-Low

TX_FAULTL

0.0---

0.5

VTransmit Fault Output-High

TX_FAULTH

2.4

---

VCC

V

Time to initialize, include reset ofTX_FAULT

t_init

---

---

300

ms

TX_FAULT from fault to assertiont_fault

---

---

100

s

TX_DISABLE time to start resett_reset10------

sPage 3 of 9Version 2.0
Date:12/15/2014

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RoHS Compliant
TX-1310/RX-1550 nm Multi-mode Bi-directional
2km for 62.5/125 or 50/125 MM fiber
SFP LC Simplex Connector, with Diagnostic Monitoring
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 C to 70 C (-40 C to 85 C)
PARAMETERSYMBOLMIN

TYP.

MAXUNITS

NOTE

Optical Input Power-maximum

PI N0------dBm

BER < 1010RX Sensitivity @OC-3

PI N------

28dBmPRBS23, BER < 1010RX Sensitivity @125Mbps

PI N------

28dBmPRBS7, BER < 1010Operating Center WavelengthC1480---1600nm

Optical isolation

ISO---

---

-45

dB

Loss of signal-Asserted

PA---

---

28

dBm

Loss of signal-DeassertedPD45------dBmDifferential Output Voltage

VDI FF

0.5

---

1.2

V

RX_LOS L

0---

0.5

V

RX_LOS H

2.4

---

VCC

V

Receiver Loss of Signal Output
Voltage-Low
Receiver Loss of Signal Output
Voltage-High

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=1260~1360nm

RoHS Compliant
TX-1310/RX-1550 nm Multi-mode Bi-directional
2km for 62.5/125 or 50/125 MM fiber
SFP LC Simplex Connector, with Diagnostic Monitoring
155 Mbps SONET OC-3/SDH STM-1/125 Mbps Fast Ethernet

Block Diagram of Transceiver

DATA
DATA/LD Drive&LD

Fault Sense

TX_DISABLE
TX_FAULTPRE.
AMPLIFIER
IC

(0)
(1)

PD

WDM Filter

MOD_DEF(2)

OPTICALDATA

SUB-ASSEMBLIESPOST-Amp

DATA/&LOS Detect

RX_LOSTransmitter and Receiver Optical Sub-assembly Section
A 1310 nm InGaAsP laser and an InGaAs PIN photodiode integrate with an WDM filter to form a bi-directional single fiber
optical subassembly (OSA). The laser of OSA is driven by a LD driver IC which converts differential input LVPECL logic
signals into an analog laser driving current. And, The photodiode of OSA is connected to a circuit providing post-amplification
quantization, and optical signal detection.
TX_FAULT
When sensing an improper power level in the laser driver, the SFP set this signal high and turns off the Laser. TX_FAULT can bereset with the TX_DISABLE line. The signal is in TTL level.
TX_DISABLE
The TX_DISABLE signal is high (TTL logic “1”) to turn off the laser output.
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 bythe system for the diagnostic purpose. The signal is operated in TTL level.

Page 5 of 9
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Date:12/15/2014

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RoHS Compliant
TX-1310/RX-1550 nm Multi-mode Bi-directional
2km for 62.5/125 or 50/125 MM fiber
SFP LC Simplex Connector, with Diagnostic Monitoring
155 Mbps SONET OC-3/SDH STM-1/125 Mbps Fast Ethernet

Dimensions

Tc point

DIMENSIONS ARE IN MILLIMETERSALL DIMENSIONS ARE 0.2mm UNLESS OTHERWISE SPECIFIED

Page 6 of 9
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Date:12/15/2014

Website: www.dci.jp

RoHS Compliant
TX-1310/RX-1550 nm Multi-mode Bi-directional
2km for 62.5/125 or 50/125 MM fiber
SFP LC Simplex Connector, with Diagnostic Monitoring
155 Mbps SONET OC-3/SDH STM-1/125 Mbps Fast Ethernet

SFP host board mechanical layout

XYS XYA1

LX A S
1PIN1

LX A SLEGEND

AS B S

1. PADS AND VIAS ARE CHASSIS GROUND
2. THROUGH HOLES, PLATING OPTIONAL
3. HATCHED AREA DENOTES COMPONENTAND TRACE KEEPOUT(EXCEPT CHASSISGROUND)
4.AREA DENOTES COMPONENT KEEPOUT(TRACES ALLOWED)PIN1DIMENSIONS ARE IN MILLIMETERSA S B S
AS B S

Unit: mm

Page 7 of 9
Version 2.0
Date:12/15/2014

Website: www.dci.jp

RoHS Compliant
TX-1310/RX-1550 nm Multi-mode Bi-directional
2km for 62.5/125 or 50/125 MM fiber
SFP LC Simplex Connector, with Diagnostic Monitoring
155 Mbps SONET OC-3/SDH STM-1/125 Mbps Fast Ethernet

Assembly drawing
1.7±0.9
3.5±0.3
41.73±0.5
PCB15.25±0.1

10.4±0.1

11.0 REF.

9.8 MAXCAGE ASSEMBLY

0.4±0.1 BELOW PCB

15.0 MAX

BEZEL

16.25±0.1
MSA-SPECIFIED BEZELPCBDIMENSIONS ARE IN MILLIMETERS

Unit: mmPage 8 of 9
Version 2.0
Date:12/15/2014

Website: www.dci.jp

RoHS Compliant
TX-1310/RX-1550 nm Multi-mode Bi-directional
2km for 62.5/125 or 50/125 MM fiber
SFP LC Simplex Connector, with Diagnostic Monitoring
155 Mbps SONET OC-3/SDH STM-1/125 Mbps Fast Ethernet

Pin Assignment
Pin-Out

Pin

PIN 11

PIN 20

PIN 10PIN 1Signal Name

Description

1TGND

Transmit Ground

234TX_FAULTTX_DISABLE
MOD_DEF (2)Transmit Fault
Transmit Disable
SDA Serial Data Signal

5MOD_DEF (1)SCL Serial Clock Signal

67MOD_DEF (0)RATE SELECTTTL Low
Open Circuit

891011RX_LOS
RGND
RGND
RGND

Receiver Loss of Signal, TTL High, open collector
Receiver Ground
Receiver Ground
Receiver Ground

1213
1415
1617RX
RX
RGND
VCCR

Receive Data Bar, Differential , ac coupled
Receive Data, Differential , ac coupled
Receiver Ground
Receiver Power Supply
Transmitter Power Supply
Transmitter Ground

VCCTTGND

18Transmit Data, Differential , ac coupled
TX19Transmit Data Bar, Differential , ac coupled
TX
TGND
20Transmitter Ground
Note : All information contained in this document is subject to change without notice.

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