Finisar Single Mode XENPAK Transponder FTLX1461E2 User manual

©Finisar Corporation – October 2008 Rev B Page 1
Product Specification
RoHS-6 Compliant
10Gb/s 1310nm Single Mode XENPAK Transponder
FTLX1461E2
PRODUCT FEATURES
Hot pluggable XENPAK MSA
form factor
Total power consumption: 3.5 W
maximum
RoHS-6 compliant (lead-free)
Temperature range 0°C to 70°C
Transmission distance of 10km
Uncooled directly modulated
1310nm Distributed Feedback (DFB)
laser
SC connector, single mode fiber
Full duplex transmission mode
Digital Optics Monitoring (DOM)
Power supply: +5.0 V, +3.3 V,
Adaptable Power Supply (APS:
+1.2 V)
XAUI electrical interface
- 4 x 3.125 Gb/s Ethernet
Management and control via MDIO
2-wire bus
70-pin connector
Separated signal/chassis ground
APPLICATIONS
10GBASE-LR 10G Ethernet
PRODUCT SELECTION
FTLX1461E2

FTLX1461E2 Product Specification – October 2008
©Finisar Corporation – October 2008 Rev B Page 2
I. PIN DESCRIPTION
Signal Name Level I/O Pin No. Description
Management and Monitoring Ports
MDIO Open Drain I/O 17 Management Data I/O. Requires
external 10 - 22 kΩpull-up to the
APS on host.
MDC 1.2 V
CMOS
I 18 Management Data Clock Input
PRTAD4 1.2 V
CMOS
1 19 Port Address Input bit 4
PRTAD3 1.2 V
CMOS
I 20 Port Address Input bit 3
PRTAD2 1.2 V
CMOS
I 21 Port Address Input bit 2
PRTAD1 1.2 V
CMOS
I 22 Port Address Input bit 1
PRTAD0 1.2 V
CMOS
I 23 Port Address Input bit 0
LASI Open Drain O 9 Link Alarm Status Interrupt Output.
Open Drain Compatible Output with
10 - 20 kΩpull-up on host.
Logic high = Normal Operation
Logic low = Status Flag Triggered
RESET Open Drain I 10 Reset Input.
Open Drain Compatible Input with
22 kΩpull-up to APS internal to
transponder.
Logic high = Normal Operation
Logic low = RESET
Vendor Specific 11,15,16,24 Vendor Specific Pins.
Leave unconnected when not used.
TX ON/OFF Open Drain I 12 TX ON/OFF Input.
Open Drain Compatible Input with
22 kΩpull-up to APS internal to
transponder.
Logic high = Transmitter On
Logic low = Transmitter Off
MOD DETECT O 14 Pulled low inside transponder
through a 1 kΩresistor to Ground
Transmit Functions
Reserved
Reserved
I
I
68
67
Reserved For Future Use
Reserved For Future Use
TX LANE 3–
TX LANE 3+
I
I
65
64
Module XAUI Input Lane 3–
Module XAUI Input Lane 3+
TX LANE 2–
TX LANE 2+
I
I
62
61
Module XAUI Input Lane 2–
Module XAUI Input Lane 2+
TX LANE 1–
TX LANE 1+
I
I
59
58
Module XAUI Input Lane 1–
Module XAUI Input Lane 1+
TX LANE 0–
TX LANE 0+
AC-coupled,
Internally biased
differential
XAUI
I
I
56
55
Module XAUI Input Lane 0–
Module XAUI Input Lane 0+

FTLX1461E2 Product Specification – October 2008
©Finisar Corporation – October 2008 Rev B Page 3
Receive Functions
Reserved
Reserved
O
O
38
39
Reserved For Future Use
Reserved For Future Use
RX LANE 0+
RX LANE 0–
O
O
41
42
Module XAUI Output Lane 0+
Module XAUI Output Lane 0–
RX LANE 1+
RX LANE 1–
O
O
44
45
Module XAUI Output Lane 1+
Module XAUI Output Lane 1–
RX LANE 2+
RX LANE 2–
O
O
47
48
Module XAUI Output Lane 2+
Module XAUI Output Lane 2–
RX LANE 3+
RX LANE 3–
AC-coupled,
Internally biased
differential
XAUI
O
O
50
51
Module XAUI Output Lane 3+
Module XAUI Output Lane 3–
DC Power
GND 0 V DC 1, 2, 3, 33, 34,
35, 36, 37, 40,
43, 46, 49, 52,
53, 54, 57, 60,
63, 66, 69, 70
Ground connection for signal ground
on the module
APS +1.2 V 7, 8, 28, 29 Input from Adaptive Power Supply
APS SENSE +1.2 V 27 APS Sense Output. Connected to the
APS input inside transponder.
APS SET 25 Feedback input from APS.
Connected to GND through a 1180Ω
resistor inside the transponder.
3.3 V +3.3 V DC 5, 6, 30, 31 DC Power Input, +3.3 V DC,
Nominal
5.0 V +5.0 V DC 4, 32 DC Power Input, +5.0 V DC,
Nominal
Reserved 26 Reserved for APD.
Reserved 13 Reserved.

FTLX1461E2 Product Specification – October 2008
©Finisar Corporation – October 2008 Rev B Page 4
Electrical Pad Layout
Fig 1-XENPAK Transponder Electrical Pad Layout
II. Absolute Maximum Ratings
Limit Values
Parameter Symbol
min. max. Unit
Storage Ambient Temperature1) TS-40 85 °C
Operating Case Temperature1) TC0 70 °C
Supply Voltage +5.0 V V50 6 V
Supply Voltage +3.3 V V30 4 V
Supply Voltage APS Vaps0 1.5 V
Static Discharge Voltage, All Pins2) STd500 V
Average Receive Optical Power RxPmax 1.5 dBm
Notes:
1) Non-condensing.
2) HBM
Exceeding any one of these values may permanently destroy the device.

FTLX1461E2 Product Specification – October 2008
©Finisar Corporation – October 2008 Rev B Page 5
III. Electrical Characteristics
Recommended Operating Conditions Values
Parameter Symbol
min. typ. max.
Unit
Operating Case Temperature1) TC0 70 °C
Transponder Total Power
Consumption P 3.5 W
Supply Voltage +5.0 V VCC5 4.75 5.0 5.25 V
Supply Current +5.0 V ICC5 300 mA
Supply Voltage +3.3 V VCC3 3.14 3.3 3.47 V
Supply Current +3.3 V ICC3 300 mA
Supply Voltage APS VCC aps 1.152 1.2 1.248 V
Supply Current APS ICC aps 1000 mA
1) Worst case thermal location, see Figure 2.
See also Environmental Performance.
Electrical DC Characteristics
(VCC5 = 4.75 V to 5.25 V, VCC3 = 3.14 V to 3.47 V, VCC aps = 1.152 V to 1.248 V, TC= 0°C to 70°C)
Values
Parameter Symbol
min. typ. max. Unit
1.2 V CMOS (1.8 V CMOS Compatible1)) I/O DC Characteristics
(PRTAD; LASI; RESET; TX_ONOFF)
External Pull-up Resistor for Open Drain Rpullup 10 22 kΩ
Output High Voltage2) Voh 1 V
Output Low Voltage2) Vol 0.15 V
Input High Voltage Vih 0.84 1.5 V
Input Low Voltage Vil 0.36 V
Input Pull-down Current3) Ipd 20 120 µA
XAUI I/O DC Characteristics (TXLANE[0..3]; RXLANE[0..3])
Differential Input Amplitude (pk-pk)4) Vin_xaui 200 2500 mV
Differential Output Amplitude (pk-pk)4) Vout_xaui 800 1600 mV
MDIO I/O DC Characteristics (MDIO; MDC)
Output Low Voltage5) VOL –0.3 0.2 V
Output Low Current IOL 4 mA
Input High Voltage VIH 0.84 1.5 V
Input Low Voltage VIL –0.3 0.36 V
Pull-up Supply Voltage VPU 1.152 1.2 1.248 V
Input Capacitance CIN 10 pF
Load Capacitance CLOAD 470 pF
External Pull-up Resistance RLOAD 200 Ω
1) For 1.8 V CMOS Voh = 1.65 V min., Vol = 0.15 V max., Vih = 1.17 V min., Vil = 0.63 V max.
2) Rpull-up = 10 kΩto 1.8 V.
3) Vin = 1.2 V.
4) AC coupled.
5) IOL = 100 µA.

FTLX1461E2 Product Specification – October 2008
©Finisar Corporation – October 2008 Rev B Page 6
Electrical AC Characteristics
(VCC5 = 4.75 V to 5.25 V, VCC3 = 3.14 V to 3.47 V, VCC aps = 1.152 V to 1.248 V, TC= 0°C to 70°C)
Values
Parameter Symbol
min. typ. max.
Unit
XAUI Input AC Characteristics (TXLANE[0..3])
Baud Rate
Ethernet
RXAUIIN
3.125
Gbit/s
Baud Rate Tolerance RTOLXAUI –100 100 ppm
Differential Input Impedance ZINXAUI 80 100 120 Ω
Differential Return Loss1) |S11| 10 dB
Input Differential Skew2) tSKEWIN 75 ps
Jitter Amplitude Tolerance3) J
XAUITOL 0.65 UIp-p
XAUI Output AC Characteristics (RXLANE[0..3])
Baud Rate
Ethernet
RXAUIOUT
3.125
Gbit/s
Baud Rate Variation RXAUIVAR –100 100 ppm
XAUI Eye Mask (far-end) According to IEEE 802.3ae
Output Differential Skew tSKEWOUT 15 ps
Output Differential Impedance ZOUTXAUI 80 100 120 Ω
Differential Output Return Loss1) |S22| 10 dB
Total Jitter4) TJXAUI 0.35 UI
Deterministic Jitter4) DJXAUI 0.37 UI
Power-On Reset AC Characteristics
Power-On Reset and TX_ONOFF
Characteristics
According to XENPAK MSA Issue 3.0, 2002-9-18
MDIO I/O AC Characteristics (MDIO; MDC)
MDIO Data Hold Time tHOLD 10 ns
MDIO Data Setup Time tSU 10 ns
Delay from MDC Rising Edge to
MDIO Data Change tDELAY 300 ns
MDC Clock Rate ƒMAX 2.5 MHz
1) 100 MHz to 2.5 GHz.
2) At crossing point.
3) Per IEEE Std 802.3ae.
4) At near-end, No pre-equalization, 1 UI = 320 ps.

FTLX1461E2 Product Specification – October 2008
©Finisar Corporation – October 2008 Rev B Page 7
IV. Optical Characteristics
(VCC5 = 4.75 V to 5.25 V, VCC3 = 3.14 V to 3.47 V, VCC aps = 1.152 V to 1.248 V, TC= 0°C to 70°C)
Values
Parameter Symbol
min. typ. max. Unit
Transmitter
Launch Power in OMA minus TDP PO-OMA –5.2 dBm
Average Launch Power PO-Avg –8.2 0.5 dBm
Center Wavelength Range λC-Tx 1290 1330 nm
Spectral Width(-20 dB) σI0.6 nm
Side Mode Suppression Ratio SMSR 30 dB
Extinction Ratio ER 3.5 dB
Relative Intensity Noise12OMA RIN –128 dB/Hz
Optical Modulation Aplitude (OMA) OMA –5.2 dBm
Transmitter and Dispersion Penalty TDP 3.2 dB
Average Launch Power of OFF
Transmitter PO-OFF –30 dBm
Optical Return Loss Tolerance ORLT12 dB
Transmitter Reflectance REFTX –12 dB
Eye Mask Definition According to IEEE 802.3ae
Receiver
Stressed Receiver Sensitivity in OMA PIN-S –10.3 dBm
Rx Sensitivity in OMA1) PIN-O –12.6 dBm
Average Receiver Power1) PIN -14.4 0.5 dBm
Receiver Damage Power PIN-dmg 1.5 dBm
Signal Detect Assert Level PLOSa –13 dBm
Signal Detect Hysteresis PLOSh 1 dB
Receiver Reflectance REFRX –12 dB
Receive Electrical 3dB Upper Cutoff
Frequency FC12.3 GHz
Center Wavelength Range λC-RX 1260 1355 nm
Stressed Signal Calibration
Vertical Eye Closure Penalty 2.2 dB
Stressed Eye Jitter 0.3 UIpp
1) Average Receiver Power (min), which is defined for an ideal input signal, is informative only.
V. General Specifications
Optical Interface Standard Specifications
Standard Differential Group Delay Maximum (ps) Operating Range 1) (meters)
B1.1 SMF 10 2 to 10,000
B1.3 SMF 10 2 to 10,000
Notes:
1) Operating range as defined by IEEE standards. Longer reach possible depending upon link implementation.

FTLX1461E2 Product Specification – October 2008
©Finisar Corporation – October 2008 Rev B Page 8
Environmental Performance
Operating case temperature: 0°C to +70°C
Operating humidity: 0% -95% RH non-condensing
Fibers and Connectors
The transponder has SC receptacles for both Tx and Rx. The transponder is designed for single
mode SC cables, 0° polished endface (PC).
70-pin Connector
The module interface connector is a 70-pin, printed circuit board edge connection with a 0.5 mm
pitch. The appropriate mating connector for the customer PCB is a 70-pin SMT, dual row, right
angled, edge connector, 0.5 mm pitch (Tyco Electronics part number 1367337-1, Molex part
number 74441-0003 or equivalent).
Rail Requirement
The XENPAK rail system required to mount the XENPAK module is fully defined by the MSA.
Aqueous Wash
Finisar XENPAK transponders are neither solderable nor aqueous washable and are not
intended for these processes.
VI. Regulatory Compliance
Feature Standard Comments
ESD:
Electrostatic Discharge to the
Electrical Pins (HBM)
EIA/JESD22-A114-B
(MIL-STD 883D
Method 3015.7)
Class 1a (> 500 V)
Immunity:
Against Electrostatic Discharge
(ESD) to the Module Receptacle
EN 61000-4-2
IEC 61000-4-2 Discharges ranging from ±2 kV to ±25 kV to
the front end / faceplate / receptacle cause no
damage to module (under recommended
conditions).
Immunity:
Against Radio Frequency
Electromagnetic Field
EN 61000-4-3
IEC 61000-4-3
With a field strength of 10 V/m, noise
frequency ranges from 10 MHz to 2 GHz. No
effect on module performance between the
specification limits.
Emission:
Electromagnetic Interference
(EMI)
FCC 47 CFR
Part 15, Class B
EN 55022 Class B
CISPR 22
Noise frequency range:
30 MHz to 40 GHz
Radiated emission does not exceed specified
limits when measured inside a shielding
enclosure with MSA conform cutout.

FTLX1461E2 Product Specification – October 2008
©Finisar Corporation – October 2008 Rev B Page 9
Eye Safety
Finisar FTLX1461E2 transponders are Class 1 Laser Products. They are certified per the
following standards:
Feature Agency Standard Certificate
Number
Laser Eye
Safety
FDA/CDRH CDRH 21 CFR 1040 and Laser Notice 50 9210176-104
Laser Eye
Safety
TÜV EN 60825-1: 1994+A11:1996+A2:2001
IEC 60825-1: 1993+A1:1997+A2:2001
IEC 60825-2: 2000, Edition 2
R 72082131
Electrical
Safety
TÜV EN 60950 R 72082131
Electrical
Safety
UL/CSA CLASS 3862.07
CLASS 3862.87
1439230
Copies of the referenced certificates are available at Finisar Corporation upon request.
VII. DOM Parameters
VIII. Mechanical Characteristics
ValuesParameter Symbol
min. typ. max.
Unit
Module Retention Force (latch strength) FRET 200 N
Module Insertion Force FIN 40 N
Module Extraction Force (with kick-out) FEXT-K 16 N
Module Extraction Force (without kick-out) FEXT 25 N
Values
Parameter min. typ. max. Unit
Transponder Temperature Monitor Accuracy1) -5 +5 °C
Laser Bias Current Monitor Accuracy2) -10 +10 %
Transmit Power Monitor Accuracy3) -3 +3 dB
Receive Power Monitor Accuracy3) -3 +3 dB
1) 0 to 70°C case temperature.
2) 0 to 12.5 mA.
3) -8.2 dBm to +0.5 dBm.

FTLX1461E2 Product Specification – October 2008
©Finisar Corporation – October 2008 Rev B Page 10
Package Outline
Figure 2-XENPAK Mechanical Dimensions
IX. References
The following references are provided for informational purposes only. The parameters and
operational behavior outlined in this specification describe the complete functionality of the 10G
Transponder. Contact Finisar for any items concerning the operational characteristics of this
device.
IEEE Std 802.3ae-2002 clause 52, 10GBASE-LR
XENPAK MSA Issue 3.0
X. For More Information
Finisar Corporation
1389 Moffett Park Drive
Sunnyvale, CA 94089-1133
Tel. [phone]
Fax [phone]
[email protected]
www.finisar.com