RoHS compliant
CWDM 1550 nm Single-mode Transceiver, 31dB margin
Small Form Pluggable (SFP), 3.3V
155 Mbps SONET OC-3/SDH STM-1/125 Mbps Fast EthernetFeatures◼ RoHS compliant◼ Compliant with SONET/SDH standard◼ Compliant with Fast Ethernet standard◼ Industry standard small form pluggable (SFP)
package◼ Duplex LC connector◼ Differential LVPECL inputs and outputs◼ Single power supply 3.3V
◼ TTL signal detect indicator◼ Hot Pluggable◼ Class 1 laser product complies with EN 60825-1

Ordering Information
PART NUMBER

WAVELENGTHINPUT/OUTPUT

SIGNAL DETECTVOLTAGETEMPERATURE

DC1470-SFP-LC.S80

1470 nm

AC/AC

TTL

3.3V

0C to 70 C

DC1490-SFP-LC.S80

1490 nm

AC/AC

TTL

3.3V

0C to 70 C

DC1510-SFP-LC.S80

1510 nm

AC/AC

TTL

3.3V

0C to 70 C

DC1530-SFP-LC.S80

1530 nm

AC/AC

TTL

3.3V

0C to 70 C

DC1550-SFP-LC.S80

1550 nm

AC/AC

TTL

3.3V

0C to 70 C

DC1570-SFP-LC.S80

1570 nm

AC/AC

TTL

3.3V

0C to 70 C

DC1590-SFP-LC.S80

1590 nm

AC/AC

TTL

3.3V

0C to 70 C

DC1610-SFP-LC.S80

1610 nm

AC/AC

TTL

3.3V0C to 70 C

Page 1 of 10
Version 1.0
Date: 11/30/2005

Website: https://www.dci.jp

RoHS compliant
CWDM 1550 nm Single-mode Transceiver, 31dB margin
Small Form Pluggable (SFP), 3.3V
155 Mbps SONET OC-3/SDH STM-1/125 Mbps Fast Ethernet

Absolute Maximum Ratings
PARAMETERSYMBOLMIN

MAXUNITS

Storage Temperature

TS−4085

C

Supply Voltage

Vcc

−0.5

4.0

V

Input Voltage

VIN

−0.5

Vcc

V

Output Current

Io---50mA

Operating Current

IOP---400mA

Page 2 of 10
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Website: https://www.dci.jp

NOTE

RoHS compliant
CWDM 1550 nm Single-mode Transceiver, 31dB margin
Small Form Pluggable (SFP), 3.3V
155 Mbps SONET OC-3/SDH STM-1/125 Mbps Fast Ethernet

Recommended Operating Conditions
PARAMETERSYMBOL

MIN

MAX

UNITS

Case Operating Temperature

TC070

C

Supply Voltage

Vcc

3.1

3.5

V

Supply Current

ITX + IRX---300mA

NOTE

Transmitter Electro-optical Characteristics
Vcc = 3.1 V to 3.5 V, TC = 0 C to 70 C
PARAMETERSYMBOLMIN

TYP.

MAXUNITS

Data Rate

B

50155200Mb/s

9/125 m fiber

Pout-4---+3dBmExtinction Ratio

ER

10---

---

dB

Central Wavelength (DC1470)

C

1464.5---1477.5nm

Central Wavelength (DC1490)

1484.5---1497.5nm

Central Wavelength (DC1510)

1504.5---1517.5nm

Central Wavelength (DC1530)

1524.5---1537.5nm

Central Wavelength (DC1550)

1544.5---1557.5nm

Central Wavelength (DC1570)

1564.5---1577.5nm

Central Wavelength (DC1590)

1584.5---1597.5nm

Central Wavelength (DC1610)

1604.5---1617.5

nm

---

---

1nm

SMSR

30---

---

dB

Rise/Fall Time (10−90%)

Tr, f---

12nsMax. Pout TX-DISABLE Asserted

POFF------−45dBm

NOTE

Output Optical PowerSpectral Width (-20dB)
Side Mode Suppression Ratio

Output Eye
Differential Input Voltage

Page 3 of 10
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Date: 11/30/2005

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

0.4

---2.0Website: https://www.dci.jp

VRoHS compliant
CWDM 1550 nm Single-mode Transceiver, 31dB margin
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 C to 70 C
PARAMETERSYMBOLMIN

TYP.

MAXUNITS

Data Rate

B

50155200

Mb/s

Optical Input Power -maximum

PIN0------dBmNote 1

Optical Input Power –minimum(Sensitivity)

PIN

---

---

−35dBmNote 1

Operating Center WavelengthC1260---1600nmData Output Rise, Fall Time
(10%~90%)

Tr, f---

12ns

Loss of Signal-Asserted

PA---

---

−35dBmLoss of Signal-Deasserted

PD−45------

dBm

Loss of Signal-Hysteresis

PA − PD

1.0------dB

Differential Output VoltageVDIFF

0.5---

1.2

V

RX_LOSL

0---

0.5

V

RX_LOSH

2.4---VCC

VReceiver Loss of Signal Output
Voltage-Low
Receiver Loss of Signal Output
Voltage-HighNOTE

Note 1: The input data is at 155.52 Mbps, 223−1 PRBS data pattern. The receiver is guaranteed to provide output data with Bit
Error Rate (BER) better than or equal to 1  10–10.

Page 4 of 10
Version 1.0
Date: 11/30/2005

Website: https://www.dci.jp

RoHS compliant
CWDM 1550 nm Single-mode Transceiver, 31dB margin
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/LD Driver&Fault Sense

LASER

TX_DISABLE
TX_FAULTOPTICALSUBASSEMBLIES

(0)
(1)

MOD_DEF

DUPLEX SC
RECEPTACLE

(2)

DATA
DATA/

POST-Amp&LOS Detect

RREAMPLIFIERIC

RX_LOS

Photo
Diode

TOP VIEW (Label side)

Transmitter Section
The transmitter section consists of a 1550 nm InGaAsP laser 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 bythe system for the diagnostic purpose. The signal is operated in TTL level.

Page 5 of 10
Version 1.0
Date: 11/30/2005

Website: https://www.dci.jp

RoHS compliant
CWDM 1550 nm Single-mode Transceiver, 31dB margin
Small Form Pluggable (SFP), 3.3V
155 Mbps SONET OC-3/SDH STM-1/125 Mbps Fast Ethernet

Dimensions

DIMENSIONS ARE IN MILLIMETERSALL DIMENSIONS ARE 0.2mm UNLESS OTHERWISE SPECIFIED
Unit: mm

Page 6 of 10
Version 1.0
Date: 11/30/2005

Website: https://www.dci.jp

RoHS compliant
CWDM 1550 nm Single-mode Transceiver, 31dB margin
Small Form Pluggable (SFP), 3.3V
155 Mbps SONET OC-3/SDH STM-1/125 Mbps Fast Ethernet

SFP host board mechanical layout
XYSXYA
1LX A S

1PIN 1

LX A SLEGENDA SB SPIN 1

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)DIMENSIONS ARE IN MILLIMETERSA SB SA SB S

Unit: mmPage 7 of 10
Version 1.0
Date: 11/30/2005

Website: https://www.dci.jp

RoHS compliant
CWDM 1550 nm Single-mode Transceiver, 31dB margin
Small Form Pluggable (SFP), 3.3V
155 Mbps SONET OC-3/SDH STM-1/125 Mbps Fast Ethernet

Assembly drawing
1.7¡ Ó
0.9
3.5¡ Ó
0.3
41.73¡ Ó
0.5
PCB

15.25¡ Ó
0.1

0.1
10.4¡ Ó11.0 REF.

9.8 MAXCAGE ASSEMBLY

0.1 BELOW PCB
0.4¡ Ó

15.0 MAX

BEZEL

16.25¡ Ó0.1
MSA-SPECIFIED BEZELPCBDIMENSIONS ARE IN MILLIMETERS

Unit: mm

Page 8 of 10
Version 1.0
Date: 11/30/2005

Website: https://www.dci.jp

RoHS compliant
CWDM 1550 nm Single-mode Transceiver, 31dB margin
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 20

PIN 10

PIN 1Pin

Signal Name

Description

1234567891011121314151617181920TGND
TX_FAULTTX_DISABLE
MOD_DEF (2)
MOD_DEF (1)
MOD_DEF (0)RATE SELECT
RX_LOS
RGND
RGND
RGND
RX−RX+
RGND
VCCR
VCCTTGND
TX+
TX−
TGND

Transmit Ground
Transmit Fault
Transmit Disable
SDA Serial Data Signal
SCL Serial Clock Signal
TTL Low
Open Circuit
Receiver Loss of Signal, TTL High, open collector
Receiver Ground
Receiver Ground
Receiver Ground
Receive Data Bar, Differential PECL, ac coupled
Receive Data, Differential PECL, ac coupled
Receiver Ground
Receiver Power Supply
Transmitter Power Supply
Transmitter Ground
Transmit Data, Differential PCEL, ac coupled
Transmit Data Bar, Differential PCEL, ac coupled
Transmitter Ground

Page 9 of 10
Version 1.0
Date: 11/30/2005

Website: https://www.dci.jp

RoHS compliant
CWDM 1550 nm Single-mode Transceiver, 31dB margin
Small Form Pluggable (SFP), 3.3V
155 Mbps SONET OC-3/SDH STM-1/125 Mbps Fast Ethernet

Eye Safety MarkThe DC 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 theAbsolute Maximum Ratings.

Required MarkClass 1 Laser ProductComplies with
21 CFR 1040.10 and 1040.11

CautionAll adjustments have been done at the factory before
the shipment of the devices. No maintenance and user
serviceable part is required. Tampering with andmodifying 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: 11/30/2005

Website: https://www.dci.jp