Finisar FTLX1461E2 User Manual

Product Specification

RoHS-6 Compliant

10Gb/s 1310nm Single Mode XENPAK Transponder

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

PRODUCT SELECTION

FTLX1461E2

APPLICATIONS

 10GBASE-LR 10G Ethernet

FTLX1461E2

© Finisar Corporation – October 2008 Rev B Page 1

FTLX1461E2 Product Specification – October 2008

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 kΩ pull-up to the
APS on host.

MDC 1.2 V

CMOS

PRTAD4 1.2 V

CMOS

PRTAD3 1.2 V

CMOS

PRTAD2 1.2 V

CMOS

PRTAD1 1.2 V

CMOS

PRTAD0 1.2 V

CMOS

LASI Open Drain O 9 Link Alarm Status Interrupt Output.

RESET Open Drain I 10 Reset Input.

Vendor Specific 11,15,16,24 Vendor Specific Pins.

TX ON/OFF Open Drain I 12 TX ON/OFF Input.

MOD DETECT O 14 Pulled low inside transponder

Transmit Functions

Reserved
Reserved
TX LANE 3–
TX LANE 3+

TX LANE 2–
TX LANE 2+
TX LANE 1–
TX LANE 1+
TX LANE 0–
TX LANE 0+

I

AC-coupled,
Internally biased
differential
XAUI

I 18 Management Data Clock Input

1 19 Port Address Input bit 4

I 20 Port Address Input bit 3

I 21 Port Address Input bit 2

I 22 Port Address Input bit 1

I 23 Port Address Input bit 0

Open Drain Compatible Output with
10 - 20 kΩ pull-up on host.
Logic high = Normal Operation
Logic low = Status Flag Triggered

Open Drain Compatible Input with
22 kΩ pull-up to APS internal to
transponder.
Logic high = Normal Operation
Logic low = RESET

Leave unconnected when not used.

Open Drain Compatible Input with
22 kΩ pull-up to APS internal to
transponder.
Logic high = Transmitter On
Logic low = Transmitter Off

through a 1 kΩ resistor to Ground

68
I
I
I

I
I
I
I
I
I

67

65

64

62

61

59

58

56

55

Reserved For Future Use
Reserved For Future Use
Module XAUI Input Lane 3–
Module XAUI Input Lane 3+

Module XAUI Input Lane 2–
Module XAUI Input Lane 2+
Module XAUI Input Lane 1–
Module XAUI Input Lane 1+
Module XAUI Input Lane 0–
Module XAUI Input Lane 0+

© Finisar Corporation – October 2008 Rev B Page 2

FTLX1461E2 Product Specification – October 2008

Receive Functions

Reserved
Reserved
RX LANE 0+
RX LANE 0–

RX LANE 1+
RX LANE 1–
RX LANE 2+
RX LANE 2–
RX LANE 3+
RX LANE 3–

O

O

AC-coupled,
Internally biased
differential
XAUI

O
O

O
O
O
O
O
O

38

39

41

42

44

45

47

48

50

51

Reserved For Future Use
Reserved For Future Use
Module XAUI Output Lane 0+
Module XAUI Output Lane 0–

Module XAUI Output Lane 1+
Module XAUI Output Lane 1–
Module XAUI Output Lane 2+
Module XAUI Output Lane 2–
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,

Ground connection for signal ground

on the module
43, 46, 49, 52,
53, 54, 57, 60,
63, 66, 69, 70

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.

© Finisar Corporation – October 2008 Rev B Page 3

FTLX1461E2 Product Specification – October 2008

Electrical Pad Layout

Fig 1-XENPAK Transponder Electrical Pad Layout

II. Absolute Maximum Ratings

Limit Values

Parameter Symbol

Storage Ambient Temperature1) TS -40 85 °C
Operating Case Temperature1) TC 0 70 °C
Supply Voltage +5.0 V V5 0 6 V
Supply Voltage +3.3 V V3 0 4 V
Supply Voltage APS V
Static Discharge Voltage, All Pins2) STd 500 V
Average Receive Optical Power RxP

Notes:

1) Non-condensing.

2) HBM

0 1.5 V

aps

1.5 dBm

max

min. max.

Unit

Exceeding any one of these values may permanently destroy the device.

© Finisar Corporation – October 2008 Rev B Page 4

FTLX1461E2 Product Specification – October 2008

III. Electrical Characteristics

Recommended Operating Conditions

Values

Parameter Symbol

min. typ. max.

Unit

Operating Case Temperature1) TC 0 70 °C
Transponder Total Power

P 3.5 W

Consumption
Supply Voltage +5.0 V V
Supply Current +5.0 V I
Supply Voltage +3.3 V V
Supply Current +3.3 V I
Supply Voltage APS V
Supply Current APS I

1)

Worst case thermal location, see Figure 2.

See also Environmental Performance.

4.75 5.0 5.25 V

CC5

300 mA

CC5

3.14 3.3 3.47 V

CC3

300 mA

CC3

1.152 1.2 1.248 V

CC aps

1000 mA

CC aps

Electrical DC Characteristics

(V

= 4.75 V to 5.25 V, V

CC5

Parameter Symbol

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 R
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)
Differential Output Amplitude (pk-pk)

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 C
External Pull-up Resistance R

1)

For 1.8 V CMOS V

2)

R

= 10 kΩ to 1.8 V.

pull-up

3)

V

= 1.2 V.

in

4)

AC coupled.

5)

I

= 100 µA.

OL

= 1.65 V min., V

oh

= 3.14 V to 3.47 V, V

CC3

4)

V

4)

V

= 0.15 V max., V

ol

= 1.152 V to 1.248 V, TC = 0°C to 70°C)

CC aps

Values

min. typ. max.

10 22 kΩ

pullup

200 2500 mV

in_xaui

800 1600 mV

out_xaui

470 pF

LOAD

200 Ω

LOAD

= 1.17 V min., V

ih

= 0.63 V max.

il

Unit

© Finisar Corporation – October 2008 Rev B Page 5

FTLX1461E2 Product Specification – October 2008

Electrical AC Characteristics

(V

= 4.75 V to 5.25 V, V

CC5

= 3.14 V to 3.47 V, V

CC3

= 1.152 V to 1.248 V, TC = 0°C to 70°C)

CC aps

Values

Parameter Symbol

min. typ. max.

XAUI Input AC Characteristics (TXLANE[0..3])

Baud Rate
Ethernet
Baud Rate Tolerance R
Differential Input Impedance Z

R

XAUIIN

3.125

–100 100 ppm

TOLXAUI

80 100 120 Ω

INXAUI

Gbit/s

Differential Return Loss1) |S11| 10 dB
Input Differential Skew2) t
Jitter Amplitude Tolerance3) J

75 ps

SKEWIN

0.65 UI

XAUITOL

XAUI Output AC Characteristics (RXLANE[0..3])

Baud Rate
Ethernet
Baud Rate Variation R

R

XAUIOUT

XAUIVAR

Gbit/s

3.125

–100 100 ppm

XAUI Eye Mask (far-end) According to IEEE 802.3ae
Output Differential Skew t
Output Differential Impedance Z

SKEWOUT

15 ps

80 100 120 Ω

OUTXAUI

Differential Output Return Loss1) |S22| 10 dB
Total Jitter4) TJ
Deterministic Jitter4) DJ

0.35 UI

XAUI

0.37 UI

XAUI

Power-On Reset AC Characteristics

Power-On Reset and TX_ONOFF

According to XENPAK MSA Issue 3.0, 2002-9-18

Characteristics

MDIO I/O AC Characteristics (MDIO; MDC)

MDIO Data Hold Time t

10 ns

HOLD

MDIO Data Setup Time tSU 10 ns
Delay from MDC Rising Edge to

t

300 ns

DELAY

MDIO Data Change
MDC Clock Rate ƒ

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.

2.5 MHz

MAX

Unit

p-p

© Finisar Corporation – October 2008 Rev B Page 6

FTLX1461E2 Product Specification – October 2008

IV. Optical Characteristics

(V

= 4.75 V to 5.25 V, V

CC5

= 3.14 V to 3.47 V, V

CC3

= 1.152 V to 1.248 V, TC = 0°C to 70°C)

CC aps

Values

Parameter Symbol

min. typ. max.

Unit

Transmitter

Launch Power in OMA minus TDP P
Average Launch Power P
Center Wavelength Range λ
Spectral Width (-20 dB)

–5.2 dBm

O-OMA

–8.2 0.5 dBm

O-Avg

1290 1330 nm

C-Tx

σ

I

0.6 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

P

–30 dBm

O-OFF

Transmitter
Optical Return Loss Tolerance ORLT 12 dB
Transmitter Reflectance REFTX –12 dB
Eye Mask Definition According to IEEE 802.3ae

Receiver

Stressed Receiver Sensitivity in OMA P
Rx Sensitivity in OMA1) P

–10.3 dBm

IN-S

–12.6 dBm

IN-O

Average Receiver Power1) PIN -14.4 0.5 dBm
Receiver Damage Power P
Signal Detect Assert Level P
Signal Detect Hysteresis P

1.5 dBm

IN-dmg

–13 dBm

LOSa

1 dB

LOSh

Receiver Reflectance REFRX –12 dB
Receive Electrical 3dB Upper Cutoff

FC 12.3 GHz

Frequency
Center Wavelength Range λ

1260 1355 nm

C-RX

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.

© Finisar Corporation – October 2008 Rev B Page 7

FTLX1461E2 Product Specification – October 2008

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)
Immunity:
Against Electrostatic Discharge
(ESD) to the Module Receptacle

Immunity:
Against Radio Frequency
Electromagnetic Field

Emission:
Electromagnetic Interference
(EMI)

EIA/JESD22-A114-B
(MIL-STD 883D
Method 3015.7)
EN 61000-4-2
IEC 61000-4-2

EN 61000-4-3
IEC 61000-4-3

FCC 47 CFR
Part 15, Class B
EN 55022 Class B
CISPR 22

Class 1a (> 500 V)

Discharges ranging from
the front end / faceplate / receptacle cause no
damage to module (under recommended
conditions).
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.
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.

±2 kV to ±25 kV to

© Finisar Corporation – October 2008 Rev B Page 8

FTLX1461E2 Product Specification – October 2008

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

Laser Eye

Safety

Electrical

Safety

Electrical

Safety

FDA/CDRH CDRH 21 CFR 1040 and Laser Notice 50 9210176-104

TÜV EN 60825-1: 1994+A11:1996+A2:2001

IEC 60825-1: 1993+A1:1997+A2:2001

IEC 60825-2: 2000, Edition 2

TÜV EN 60950 R 72082131

UL/CSA

CLASS 3862.07
CLASS 3862.87

R 72082131

1439230

Copies of the referenced certificates are available at Finisar Corporation upon request.

VII. DOM Parameters

Values

Parameter

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.

min. typ. max.

Unit

VIII. Mechanical Characteristics

Values Parameter Symbol

min. typ. max.

Module Retention Force (latch strength) F
Module Insertion Force FIN 40 N
Module Extraction Force (with kick-out) F
Module Extraction Force (without kick-out) F

200 N

RET

16 N

EXT-K

25 N

EXT

Unit

© Finisar Corporation – October 2008 Rev B Page 9

FTLX1461E2 Product Specification – October 2008

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]

[e-mail]
www.finisar.com

© Finisar Corporation – October 2008 Rev B Page 10