© Finisar Corporation June 25, 2006 Rev. D Page 1
Product Specification
2.125 Gb/s RoHS Compliant Short-Wavelength SFP Transceiver
FTLF8519P2xTL
PRODUCT FEATURES
Up to 2.125 Gb/s bi-directional
data links
Hot-pluggable SFP footprint
Built-in digital diagnostic functions
850nm Oxide VCSEL laser
transmitter
Duplex LC connector
RoHS Compliant and Lead-Free
Up to 500m on 50/125μm MMF,
300m on 62.5/125μm MMF
Metal enclosure, for lower EMI
Single 3.3V power supply
Low power dissipation
Industrial operating temperature
range: -40°C to 85°C
APPLICATIONS
1.25 Gb/s 1000Base-SX Ethernet
Dual Rate 1.063/2.125 Gb/s Fibre
Channel
Wireless: OBSAI, CPRI
Finisar’s FTLF8519P2xTL Small Form Factor Pluggable (SFP) transceivers are
compatible with the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA)1.
They are simultaneously compatible with Gigabit Ethernet as specified in IEEE Std
802.32 and Fibre Channel FC- PI-2 Rev. 5.03. They are RoHS compliant and lead-free
per Directive 2002/95/EC4 and Finisar Application Note AN-2038. Digital diagnostics
functions are available via the 2-wire serial bus specified in the SFP MSA.
PRODUCT SELECTION
FTLF8519P2xTL
x W Wide Extraction Bail
B Narrow Extraction Bail
FTLF8519P2xTL Pluggable SFP Product Specification – June 2009
© Finisar Corporation June 25, 2006 Rev. D Page 2
I. Pin Descriptions
Pin Symbol Name/Description Ref.
1 VEET Transmitter Ground (Common with Receiver Ground) 1
2 TFAULT Transmitter Fault.
3 TDIS Transmitt er Disabl e. Laser o u t put di sabl ed on high or open. 2
4 MOD_DEF(2) Module Defini t i on 2. Dat a line for Serial ID. 3
5 MOD_DEF(1) Module Definition 1. Clock line for Serial ID. 3
6 MOD_DEF(0 ) Module Definition 0. Grou nd e d wi t hi n the module. 3
7 Rate Select No connection required
8 LOS Loss of Signal indication. Logic 0 indicates normal operation. 4
9 VEER Receiver Ground (Common with Transmitter Ground) 1
10 VEER Receiver Ground (Common with Transmitter Ground) 1
11 VEER Receiver Ground (Common with Transmitter Ground) 1
12 RD- Receiver Inverted DATA out. AC Coupled
13 RD+ Receiver Non-inverted DATA out. AC Coupled
14 VEER Receiver Ground (Common with Transmitter Ground) 1
15 VCCR Receiver Power Supply
16 VCCT Transmitter Power Supply
17 VEET Transmitter Ground (Common with Receiver Ground) 1
18 TD+ Transmitter Non-Inverted DATA in. AC Coupled.
19 TD- Transmitter Inverted DATA in. AC Coupled.
20 VEET Transmitter Ground (Common with Receiver Ground) 1
Notes:
1. Circuit ground is internally isolated from chassis ground.
2. Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V.
3. Should be pul led up with 4.7k – 10 k ohms on host board t o a voltage between 2.0V and 3 .6 V.
MOD_DEF(0) pulls line low to indicate module is plugged in.
4. LOS is open collector output. Should be pulled up with 4.7k – 10kohms on host board to a voltage
between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.
VeeT
VeeT
VeeR
VeeR
TD-
TD+
RD+
RD-
VccT
VccR
VeeT
VeeR
TXFault
MOD-DEF(2)
MOD-DEF(1)
MOD-DEF(0)
Rate Select
LOS
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
Towards
ASIC
Towards
Bezel
TX Disable
VeeR
Diagram of Host Board Connector Block Pin Numbers and Names
FTLF8519P2xTL Pluggable SFP Product Specification – June 2009
© Finisar Corporation June 25, 2006 Rev. D Page 3
II. Absolute Maximum Ratings
Parameter Symbol Min Typ Max Unit Ref.
Maximum Supply Voltage Vcc -0.5 4.0 V
Storage Temperature TS -40 85
°C
Case Operating Temperature TA -40 85
°C
Relative Humidity RH 0 85 % 1
III. Electrical Characteristics (TA = -40 to 85 °C, VCC = 3.0 to 3.6 Volts)
Parameter Symbol Min Typ Max Unit Ref.
Supply Volta g e Vcc 3.0 3.6 V
Supply Current Icc 180 240 mA
Transmitter
Input differential impedance Rin 100 Ω 2
Single ended data input swing Vin,pp 250 1200 mV 3
Transmit Disable Voltage VD 2 Vcc V 4
Transmit Enable Voltage VEN Vee Vee+ 0.8 V
Receiver
Single ended data output swing Vout,pp 250 450 550 mV 5
Data output rise time tr 90 175 ps 6
Data output fall time tf 90 175 ps 6
Mask Margin 45%
LOS Fault VLOS fault 2 VccHOST V 7
LOS Normal VLOS norm Vee Vee+0.5 V 7
Power Supply Rejection PSR 100 mVpp 8
Deterministic Jitter Contribution RX
Δ
DJ 51.7 ps 9
Total Jitter Contribution RX
Δ
TJ <65 122.4 ps 10
Notes:
1. Non condensing.
2. Connected directly to TX data input pins. AC coupling from pins into laser driver IC.
3. We recommend <600mV for best EMI performance.
4. Or open circuit.
5. Into 100 ohms differential termination.
6. 20 – 80 %
7. LOS is an open collector output. Should be pulled up with 4.7k – 10kohms on the host board. Normal
operation is logic 0; loss of signal is logic 1. Maximum pull-up voltage is 5.5V.
8. Receiver sensitivity is compliant with power supply sinusoidal modulation of 20 Hz to 1.5 MHz up to
specified value applied through the recommended power supply filtering network.
9. Typical peak-to-peak jitter (=6*RMS width of Jitter).
10. Measured with DJ-free data input signal. In actual applicatio n, output DJ will be the sum of input DJ
and ΔDJ.
11. If measured with TJ-free data input signal. In actual application, output TJ will be given by:
()()
22 DJTJDJTJDJDJTJ INININOUT Δ−Δ+−+Δ+=
FTLF8519P2xTL Pluggable SFP Product Specification – June 2009
© Finisar Corporation June 25, 2006 Rev. D Page 4
IV. Optical Characteristics (TOP = -40 to 85 °C, VCC = 3. 00 to 3.60 Volts)
Parameter Symbol Min Typ Max Unit Ref.
Transmitter
Output Opt. Pwr: 50 or 62.5 MMF POUT -9 -2.5 dBm 1
Optical Wavelength λ 830 860 nm
Spectral Width σ 0.85 nm
Optical Modulation Amplitude @
2.125 Gb/ s OMA 196 μW 2
Optical Modulation Amplitude @
1.0625 Gb/s OMA 156 μW 2
Optical Rise/Fall Time tr/ tf 100 150 ps 3
Relative Intensity Noise RIN -120 dB/Hz
Deterministic Jitter Contribution TX
Δ
DJ 20 56.5 ps 4
Total Jitter Contribution TX
Δ
TJ <65 119 ps 5
Extinction Ratio @ 1.25 Gb/s ER 9 dB
Mask Margin 45%
Receiver
Receiver Sensitivity = 1.0625 Gb/s RxSENS -20 dBm 6
Receiver Sensitivity = 2.125 Gb/s RxSENS -18 dBm 6
Receiver Sensitivity = 1.25 Gb/s RxSENS -20 dBm 7
Stressed RX sens. =1.0625 Gb/s 0.055 mW 8
Stressed RX sens. =2.125 Gb/s 0.096 mW 8
Stressed RX sens. =1.25 Gb/s -13.5 dBm 9
Average Receiver Power RxMAX 0 dBm
Receiver Elec. 3 dB cutoff freq. 1500 MHz
Optical Center Wavelength λC 770 860 nm
Optical Return Loss 12 dB
LOS De-Assert LOSD -20 dBm
LOS Assert LOSA -30 dBm
LOS Hysteresis 0.5 dB
Notes:
1. Class 1 Laser Safety per FDA/CDRH, IEC, and EN60825-1 laser safety standards.
2. Equivalent extinction ratio specification for Fibre Channel. Allows smaller ER at higher average
power.
3. Unfiltered, 20-80%. Complies with FC 1x and 2x eye mask when filtered.
4. Measured with DJ-free data input signal. In actual app lication, output DJ will be the sum of input DJ
and ΔDJ.
5. If measured with TJ-free data input signal. In actual application, output TJ will be given by:
()()
22 DJTJDJTJDJDJTJ INININOUT Δ−Δ+−+Δ+=
6. Specifications are for 50 micro-meter or 62.5 micro-meter fiber
7. As measured with 9dB extinction ratio.
8. Measured with conformance signals defined in FC-PI-2 Rev. 5.0 specifications.
9. Measured wit h conf ormance signals defined in IEEE 802. 3 speci ficat i o ns.
FTLF8519P2xTL Pluggable SFP Product Specification – June 2009
© Finisar Corporation June 25, 2006 Rev. D Page 5
V. General Specifications
Parameter Symbol Min Typ Max Units Ref.
Data Rate BR 1.062,
1.25,
2.125
Gb/sec 1
Bit Error Rate BER 10-12 4
Fiber Length on 50/125μm MMF L 550
300 m 2
3
Fiber Length on 62.5/125μm MMF L 300
150 m 2
3
Notes:
1. Gigabit Ethernet and 1x, 2x Fibre Channel compatible, per IEEE 802.3 and FC-PI-2 Rev. 5.0
respectively.
2. At 1.0625 Gb/s Fibre Channel and 1.25 Gb/s Gigabit Ethernet data rates.
3. At 2.125 Gb/s Fibre Channel data rate.
4. 2.125Gb/s with PRBS 27-1.
VI. Environmental Specifications
Finisar 850nm SFP transceivers have an industrial operating temperature range from
–40°C to +85°C case temperature.
Parameter Symbol Min Typ Max Units Ref.
Case Operating Temperature Top -40 85 °C
Storage Temperature Tsto -40 85 °C
VII. Regulatory Compliance
Finisar transceivers are Class 1 Laser Products and comply with US FDA regulations.
These products are certified by TÜV and CSA to meet the Class 1 eye safety
requirements of EN (IEC) 60825 and the electrical safety requirements of
EN (IEC) 60950. Copies of certificates are available at Finisar Corporation upon request.
Copies of the referenced certificates are available at Finisar Corporation upon request.
FTLF8519P2xTL Pluggable SFP Product Specification – June 2009
© Finisar Corporation June 25, 2006 Rev. D Page 6
VIII. Digital Diagnostic Functions
Finisar FTLF8519P2xTL SFP transceivers support the 2-wire serial communication
protocol as defined in the SFP MSA1. It is very closely related to the E2PROM defined in
the GBIC standard, with the same electrical specifications.
The standard SFP serial ID provides access to identification information that describes
the transceiver’s capabilities, standard interfaces, manufacturer, and other information.
Additionally, Finisar SFP transceivers provide a unique enhanced digital diagnostic
monitoring interface, which allows real-time access to device operating parameters such
as transceiver temperature, laser bias current, transmitted optical power, received optical
power and transceiver supply voltage. It also defines a sophisticated system of alarm and
warning flags, which alerts end-users when particular operating parameters are outside of
a factory set normal range.
The SFP MSA defines a 256-byte memory map in E2PROM that is accessible over a
2-wire serial interface at the 8 bit address 1010000X (A0h). The digital diagnostic
monitoring interface makes use of the 8 bit address 1010001X (A2h), so the originally
defined serial ID memory map remains unchanged. The interface is identical to, and is
thus fully backward compatible with both the GBIC Specification and the SFP Multi
Source Agreement. The complete interface is described in Finisar Application Note AN-
2030: “Digital Diagnostics Monitoring Interface for SFP Optical Transceivers”.
The operating and diagnostics information is monitored and reported by a Digital
Diagnostics Transceiver Controller (DDTC) inside the transceiver, which is accessed
through a 2-wire serial interface. When the serial protocol is activated, th e serial clock
signal (SCL, Mod Def 1) is generated by the host. The positive edge clocks data into the
SFP transceiver into those segments of the E2PROM that are not write-protected. The
negative edge clocks data from the SFP transceiver. The serial data signal (SDA, Mod
Def 2) is bi-directional for serial data transfer. The host uses SDA in conjunction with
SCL to mark the start and end of serial protocol activation. The memories are organized
as a series of 8-bit data words that can be addressed individually or sequentially.
For more information, please see the SFP MSA documentation1,5 or Finisar Application
Note AN-2030.
Please note that evaluation board FDB-1018 is available with Finisar ModDEMO
software that allows simple to use communication over the 2-wire serial interface.
FTLF8519P2xTL Pluggable SFP Product Specification – June 2009
© Finisar Corporation June 25, 2006 Rev. D Page 7
IX. Digital Diagnostic Specifications
FTLF8519P2xTy transceivers can be used in host systems that require either internally or
externally calibrated digital diagnostics.
Parameter Symbol Min Typ Max Units Ref.
Accuracy
Internally measured transceiver
temperature DDTemperature 3 ºC
Internally measured transceiver
supply voltage DDVoltage 100 mV
Measured TX bias current DDBias 10 % 1
Measured TX output power DDTx-Power 2 dB
Measured RX received average
optical power DDRx-Power 2 dB
Dynamic Range for Rated Accuracy
Internally measured transceiver
temperature DDTemperature -40 85 ºC
Internally measured transceiver
supply voltage DDVoltage 3.0 3.6 V
Measured TX bias current DDBias 0 20 mA
Measured TX output power DDTx-Power -9 -2.5 dBm
Measured RX received average
optical power DDRx-Power -20 0 dBm
Max Reporting Range
Internally measured transceiver
temperature DDTemperature -40 125 ºC
Internally measured transceiver
supply voltage DDVoltage 2.8 4.0 V
Measured TX bias current DDBias 0 20 mA
Measured TX output power DDTx-Power -10 -2 dBm
Measured RX received average
optical power DDRx-Power -22 0 dBm
Notes:
1. Accuracy of Measured Tx Bias Current is 10% of the actual Bias Current from the laser driver to the
laser.
FTLF8519P2xTL Pluggable SFP Product Specification – June 2009
© Finisar Corporation June 25, 2006 Rev. D Page 8
X. Mechanical Specifications
Finisar’s Small Form Factor Pluggable (SFP) transceivers are compatible with the
dimensions defined by the SFP Multi-Sourcing Agreement (MSA).
FTLF8519P2BTL
FTLF8519P2xTL Pluggable SFP Product Specification – June 2009
© Finisar Corporation June 25, 2006 Rev. D Page 9
FTLF8519P2WTL
FTLF8519P2xTL Pluggable SFP Product Specification – June 2009
© Finisar Corporation June 25, 2006 Rev. D Page 10
XI. PCB Layout and Bezel Recommendations
FTLF8519P2xTL Pluggable SFP Product Specification – June 2009
© Finisar Corporation June 25, 2006 Rev. D Page 11
FTLF8519P2xTL Pluggable SFP Product Specification – June 2009
© Finisar Corporation June 25, 2006 Rev. D Page 12
XII. References
1. Small Form Factor Pluggable (SFP) Transceiver Multi-source Agreement (MSA).
September 14, 2000.
2. IEEE Std 802.3, 2002 Edition, Clause 38, PMD Type 1000BASE-SX.
IEEE Standards Department, 2002.
3. “Fibre Channel Draft Physical Interface Specification (FC-PI-2 Rev. 5.0)”. American
National Standard for Information Systems.
4. Directive 2002/95/EC of the European Council Parliament and of the Council, “on
the restriction of the use of certain hazardous substances in electrical and electronic
equipment.” January 27, 2003.
5. “Digital Diagnostics Monitoring Interface for Optical Transceivers”. SFF Document
Number SFF-8472, Revision 9.3.
XIII. For More Information
Finisar Corporation
1308 Moffett Park Drive
Sunnyvale, CA 94089-1133
Tel. 1-408-548-1000
Fax 1-408-541-6138
sales@finisar.com
www.finisar.com
