Finisar’s FTLF1318P3BTL Small Form Factor Pluggable (SFP) transceivers are
compatible with the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA)
They simultaneously comply with Gigabit Ethernet as specified in IEEE Std 802.31 and
1x Fibre Channel as defined in FC-PI-4 Rev. 8.003. They are RoHS compliant and leadfree per Directive 2002/95/EC
5
and Finisar Appl. Note AN-2038. Digital diagnostics
functions are available via the 2-wire serial bus specified in the SFP MSA.
FTLF1318P3BTL SFP Product Specification – September 2010 F i n i s a r
I. Pin Descriptions
Pin Symbol Name/Description Ref.
1 V
2 T
3 T
EET
FAULT
Transmitter Disable. Laser output disabled o n hi g h or open. 3
DIS
4 MOD_DEF(2) Module Definition 2. Data line for Serial ID. 4
5 MOD_DEF(1) Module Definition 1. Clock line for Serial ID. 4
6 MOD_DEF(0) Module Definition 0. Grounded within the module. 4
7 Rate Select No connection required 5
8 LOS Loss of Signal indication. Logic 0 indicates normal operation. 6
9 V
10 V
11 V
12 RD-
EER
EER
EER
13 RD+ Receiver Non-inverted DATA out. AC Coupled
14 V
15 V
16 V
17 V
EER
Receiver Power Supply
CCR
Transmitter Power Supply
CCT
EET
18 TD+ Transmitter Non-Inverted DATA in. AC Coupled.
19 TD20 V
EET
Notes:
1. Circuit ground is internally isolated from chassis ground.
2. T
is an open collector/drain output, which should be pulled up with a 4.7k – 10k Ohms resistor on
FAULT
the host board if intended for use. Pull up voltage should be betwee n 2. 0 V t o Vcc + 0.3V . A high
output indicates a transmitter fault caused by either the TX bias current or the TX output power
exceeding the preset alarm thresholds. A low output indicates normal operation. In the low state, the
output is pulled to <0.8V.
3. Laser output disabled on T
4. Should be pulled up with 4.7k - 10 kohms on host board to a voltage between 2.0V and 3.6V.
MOD_DEF(0) pulls line low to indicate module is plugged in.
5. Finisar FTLF1318xxxxx transceivers operate at 1x Fibre Channel and Gigabit Eth ernet data rates and
respective protocols without active control.
6. LOS is open collector output. Should be pulled up with 4.7k – 10 kohms on host board to a voltage
between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.
Transmitter Ground (Common with Receiver Ground) 1
Transmitter Fault. 2
Receiver Ground (Common with Transmitter Ground) 1
Receiver Ground (Common with Transmitter Ground) 1
Receiver Ground (Common with Transmitter Ground) 1
Receiver Inverted DATA out. AC Coupled
Receiver Ground (Common with Transmitter Ground) 1
Transmitter Ground (Common with Receiver Ground) 1
Transmitter Inverted DATA in. AC Coupled.
Transmitter Ground (Common with Receiver Ground) 1
FTLF1318P3BTL SFP Product Specification – September 2010 F i n i s a r
t
m
Δ
Δ
Towards
Bezel
1
2
3
4
5
6
7
8
9
10
VeeT
TXFault
TX Disable
MOD-DEF(2)
MOD-DEF(1)
MOD-DEF(0)
Rate Select
LOS
VeeR
VeeR
VeeT
TD-
TD+
VeeT
VccT
VccR
VeeR
RD+
RD-
VeeR
20
19
18
17
16
15
14
13
12
11
Towards
ASIC
Pinout of Connector Block on Host Board
II. Absolute Maximum Ratings
Parameter Symbol Min Typ Max Unit Ref.
Maximum Supply Voltage Vcc -0.5 4.0 V
Storage Temperature T
Case Operating Temperature T
S
OP
-40 100
-40 85
°C
°C
Relative Humidity RH 0 85 % 1
III. Electrical Characteristics (T
Parameter Symbol Min Typ Max Unit Ref.
Supply Voltage Vcc 3.00 3.60 V
Supply Current Icc 300 mA
Transmitter
Input differential impedance R
Single ended data input swing Vin,pp250 1200 mV
Transmit Disable Voltage V
Transmit Enable Voltage V
Transmit Disable Assert Time 10 us
Receiver
Single ended data output swing Vout,pp300 400 800 mV 4
Data output rise time tr 300 ps 5
Data output fall time tf 300 ps 5
LOS Fault V
LOS Normal V
Power Supply Rejection PSR100 mVpp 7
Deterministic Jitter Contribution
FTLF1318P3BTL SFP Product Specification – September 2010 F i n i s a r
μ
Δ
Δ
λ
:
Notes
1. Non-condensing.
2. AC coupled.
3. Or open circuit.
4. Into 100 ohm differential termination.
5. 20 – 80 %
6. LOS is LVTTL. Logic 0 indicates normal operation; logic 1 indicates no signal detected.
7. All transceiver specifications are compliant with a power supply sinusoidal modulation of 20 Hz to 1.5
MHz up to specified value applied through the power supply filtering network shown on page 23 of the
Small Form-factor Pluggable (SFP) Transceiver MultiSource Agreement (MSA), September 14, 2000.
8. Measured with DJ-free data input signal. In actual application, output DJ will be the sum of input DJ
Δ
and
DJ.
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. Power P
Optical Wavelength
Spectral Width
Optical Modulation Amplitude OMA
Optical Rise/Fall Time tr/ t
FTLF1318P3BTL SFP Product Specification – September 2010 F i n i s a r
V. General Specifications
Parameter Symbol Min Typ Max Units Ref.
Data Rate BR 1062 1250 Mb/sec 1
Bit Error Rate BER 10
Max. Supported Link Length on
9/125μm SMF @ 1X Fibre Channel
Max. Supported Link Length on
9/125μm SMF @ Gigabit Ethernet
Notes:
1. Gigabit Ethernet and 1x Fibre Channel compliant.
2. Tested with a PRBS 2
3. Dispersion limited per FC-PI-4 Rev. 8.00
4. Attenuation of 0.55 dB/km is used for the link length calculations. Distances are indicative only.
Please refer to the Optical Specifications in Table IV to calculate a more accurate link budget based on
specific conditions in your application.
7
-1 test pattern.
L
10 km 3, 4
MAX1
L
10 km 3, 4
MAX2
VI. Environmental Specifications
Finisar 1310nm Industrial Temperature SFP transceivers have an operating temperature
range from -40°C to +85°C case temperature.
Parameter Symbol Min Typ Max Units Ref.
Case Operating Temperature T
Storage Temperature T
op
sto
-40 85 °C
-40 100 °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.
FTLF1318P3BTL SFP Product Specification – September 2010 F i n i s a r
VIII. Digital Diagnostic Functions
Finisar FTLF1318P3BTL 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 2wire 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 AN2030: “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, the 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.
1
For more information, please see the SFP MSA documentation
or Finisar Application
Note AN-2030.
Digital diagnostics for the FTLF1318P3BTL are internally calibrated by default.
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.