Finisar Corporation August 2016 Rev A1 Page 1
Product Specification
40GBASE-LR4 QSFP+ Optical Transceiver Module
FTL4C1QE2C
9BPRODUCT FEATURES
Hot-pluggable QSFP+ form factor
Supports 41.2 Gb/s aggregate bit
rates
Power dissipation < 3.5W
RoHS-6 compliant
Commercial case temperature
range 0°C to 70°C
Single 3.3V power supply
Maximum link length of 10km on
Single Mode Fiber (SMF)
Uncooled 4x10Gb/s CWDM
transmitter
XLPPI electrical interface
Duplex LC receptacles
Built-in digital diagnostic
functions, including Tx/Rx power
monitoring
1
APPLICATIONS
40GBASE-LR4 40G Ethernet
Finisar’s FTL4C1QE2C QSFP+ transceiver modules are designed for use in 40 Gigabit
Ethernet links over single mode fiber. They are compliant with the QSFP+ MSA1,2 and IEEE
802.3ba 40GBASE-LR43. Digital diagnostics functions are available via an I2C interface, as
specified by the QSFP+ MSA. The optical transceiver is compliant per the RoHS Directive
2011/65/EU4. See Finisar Application Note AN-2038 for more details5.
3B
PRODUCT SELECTION
16BFTL4C1QE2C
E: 40GBASE-LR4 compliant optical interface
2: Second generation product
C: Commercial temperature rate
FTL4C1QE2C Product Specification
Finisar Corporation August 2016 Rev A1 Page 2
I. Pin Descriptions
Figure 1 – QSFP+ MSA-compliant 38-pin connector
Pin
6BSymbol
Name/Description
Notes
1
GND
Ground
1
2
Tx2n
Transmitter Inverted Data Input
3
Tx2p
Transmitter Non-Inverted Data Input
4
GND
Ground
1
5
Tx4n
Transmitter Inverted Data Input
6
Tx4p
Transmitter Non-Inverted Data Input
7
GND
Ground
1
8
ModSelL
Module Select
9
ResetL
Module Reset
10
Vcc Rx
+3.3 V Power supply receiver
11
SCL
2-wire serial interface clock
12
SDA
2-wire serial interface data
13
GND
Ground
1
14
Rx3p
Receiver Non-Inverted Data Output
15
Rx3n
Receiver Inverted Data Output
16
GND
Ground
1
17
Rx1p
Receiver Non-Inverted Data Output
18
Rx1n
Receiver Inverted Data Output
19
GND
Ground
1
20
GND
Ground
1
21
Rx2n
Receiver Inverted Data Output
22
Rx2p
Receiver Non-Inverted Data Output
23
GND
Ground
1
24
Rx4n
Receiver Inverted Data Output
25
Rx4p
Receiver Non-Inverted Data Output
26
GND
Ground
1
FTL4C1QE2C Product Specification
Finisar Corporation August 2016 Rev A1 Page 3
27
ModPrsL
Module Present
28
IntL
Interrupt
29
Vcc Tx
+3.3 V Power supply transmitter
30
Vcc1
+3.3 V Power Supply
31
LPMode
Low Power Mode
32
GND
Ground
1
33
Tx3p
Transmitter Non-Inverted Data Input
34
Tx3n
Transmitter Inverted Data Input
35
GND
Ground
1
36
Tx1p
Transmitter Non-Inverted Data Input
37
Tx1n
Transmitter Inverted Data Input
38
GND
Ground
1
UNotes
1. Circuit ground is internally isolated from chassis ground.
II. 0BGeneral Product Characteristics
Parameter
Value
Unit
Module Form Factor
QSFP+
Maximum Aggregate Data Rate
41.2
Gb/s
Maximum Data Rate per Lane
10.3
Gb/s
Protocols Supported
Typical applications include
40G Ethernet, Infiniband,
Fibre Channel,
SATA/SAS3
Electrical Interface and Pin-out
38-pin edge connector
Maximum Power Consumption
3.5
Watts
Management Interface
Serial, I2C-based, 400 kHz
maximum frequency
Data Rate Specifications
Symbol
Min
Typ
Max
Units
Ref.
Bit Rate per Lane
BR
10,313
Mb/sec
1
Bit Error Ratio
BER
10-12
2
Link distance on SMF-28
d
10
kilometers
3
UNotesU:
1. Compliant with 40GBASE-LR4 and XLPPI per IEEE 802.3ba. Compatible with 1/10 Gigabit Ethernet
and 1/2/4/8/10G Fibre Channel.
2. Tested with a PRBS 231-1 test pattern.
3. Per 40GBASE-LR4, IEEE 802.3ba
FTL4C1QE2C Product Specification
Finisar Corporation August 2016 Rev A1 Page 4
III. 11BAbsolute Maximum Ratings
Parameter
Symbol
Min
Typ
Max
Unit
Ref.
Maximum Supply Voltage
Vcc1,
VccTx,
VccRx
-0.5
3.6
V
Storage Temperature
TS
-40
85
C
Case Operating Temperature
TOP
0
70
C
Relative Humidity
RH
0
85
%
1
Damage Threshold, per Lane
DT
3.4
dBm
UNotesU:
1. Non-condensing.
IV. 1BElectrical Characteristics (TOP = 0 to 70C, VCC = 3.1 to 3.47 Volts)
Parameter
Symbol
Min
Typ
Max
Unit
Ref.
Supply Voltage
Vcc1,
VccTx,
VccRx
3.1
3.47
V
Supply Current
Icc
1.13
A
Link turn-on time
Transmit turn-on time
2000
ms
2
Transmitter (per Lane)
Single ended input voltage tolerance
VinT
-0.3
4.0
V
Differential data input swing
Vin,pp
120
1200
mVpp
3
Differential input threshold
50
mV
AC common mode input voltage tolerance
(RMS)
15
mV
Differential input return loss
Per IEEE P802.3ba,
Section 86A.4.1.1
dB
4
J2 Jitter Tolerance
Jt2
0.17
UI
J9 Jitter Tolerance
Jt9
0.29
UI
Data Dependent Pulse Width Shrinkage
DDPWS
0.07
UI
Eye mask coordinates {X1, X2
Y1, Y2}
0.11, 0.31
95, 350
UI
mV
5
Receiver (per Lane)
Single-ended output voltage
-0.3
4.0
V
Differential data output swing
Vout,pp
200
400
mVpp
6, 7
300
600
400
550
800
600
1200
AC common mode output voltage (RMS)
7.5
mV
Termination mismatch at 1 MHx
5
%
Differential output return loss
Per IEEE P802.3ba,
Section 86A.4.2.1
dB
4
Common mode output return loss
Per IEEE P802.3ba,
Section 86A.4.2.2
dB
4
Output transition time, 20% to 80%
28
ps
J2 Jitter output
Jo2
0.42
UI
J9 Jitter output
Jo9
0.65
UI
Eye mask coordinates #1 {X1, X2
Y1, Y2}
0.29, 0.5
150, 425
UI
mV
5
FTL4C1QE2C Product Specification
Finisar Corporation August 2016 Rev A1 Page 5
Power Supply Ripple Tolerance
PSR
50
mVpp
UNotesU:
1. Maximum total power value is specified across the full temperature and voltage range.
2. From power-on and end of any fault conditions.
3. After internal AC coupling. Self-biasing 100 differential input.
4. 10 MHz to 11.1 GHz range.
5. Hit ratio = 5 x 10E-5.
6. AC coupled with 100 differential output impedance.
7. Output voltage is settable in 4 discrete steps via I2C. Default is 400 – 800 mV.
V. 2BOptical Characteristics (TOP = 0 to 70C, VCC = 3.1 to 3.47 Volts)
Parameter
Symbol
Min
Typ
Max
Unit
Ref.
Transmitter
Signaling Speed per Lane
10.3125
GBd
1
Lane center wavelengths (range)
1264.5 – 1277.5
1284.5 – 1297.5
1304.5 – 1317.5
1324.5 – 1337.5
nm
Total Average Launch Power
POUT
8.3
dBm
Transmit OMA per Lane
TxOMA
-4.0
3.5
dBm
Average Launch Power per Lane
TXPx
-7.0
2.3
dBm
2
Optical Extinction Ratio
ER
3.5
dB
Sidemode Suppression ratio
SSRmin
30
dB
Average launch power of OFF
transmitter, per lane
-30
dBm
Relative Intensity Noise
RIN
-128
dB/Hz
3
Optical Return Loss Tolerance
20
dB
Transmitter Reflectance
-12
dB
Transmitter eye mask definition {X1,
X2, X3, Y1, Y2, Y3}
{0.25, 0.4, 0.45, 0.25, 0.28, 0.4}
Receiver
Signaling Speed per Lane
10.3125
GBd
4
Lane center wavelengths (range)
1264.5 – 1277.5
1284.5 – 1297.5
1304.5 – 1317.5
1324.5 – 1337.5
nm
Receive Power (OMA) per Lane
RxOMA
3.5
dBm
Average Receive Power per Lane
RXPx
-13.7
2.3
dBm
5
Receiver Sensitivity (OMA) per Lane
Rxsens
-11.5
dBm
Stressed Receiver Sensitivity (OMA)
per Lane
SRS
-9.6
dBm
Damage Threshold per Lane
PMAX
3.4
dBm
Return Loss
RL
-26
dB
Vertical eye closure penalty, per lane
1.9
dB
Receive electrical 3 dB upper cutoff
frequency, per lane
12.3
GHz
LOS De-Assert
LOSD
-15
dBm
LOS Assert
LOSA
-28
dBm
LOS Hysteresis
0.5
dB
FTL4C1QE2C Product Specification
Finisar Corporation August 2016 Rev A1 Page 6
UNotesU:
1. Transmitter consists of 4 lasers operating at 10.3Gb/s each.
2. Minimum value is informative.
3. RIN is scaled by 10*log(10/4) to maintain SNR outside of transmitter.
4. Receiver consists of 4 photodetectors operating at 10.3Gb/s each.
5. Minimum value is informative, equals min TxOMA with infinite ER and max channel insertion loss.
VI. 12BMemory Map and Control Registers
Compatible with SFF-8436 (QSFP+). Please see Finisar Application Note AN-21046.
VII. 13BEnvironmental Specifications
Finisar FTL4C1QE2C transceivers have an operating temperature range from 0°C to +70°C
case temperature.
Environmental Specifications
Symbol
Min
Typ
Max
Units
Ref.
Case Operating Temperature
Top
0
70
°C
Storage Temperature
Tsto
-40
85
°C
VIII. 4BRegulatory Compliance
Finisar FTL4C1QE2C transceivers are RoHS-6 Compliant. Copies of certificates are
available at Finisar Corporation upon request.
FTL4C1QE2C transceiver modules are Class 1 laser eye safety compliant per IEC 60825-1.
FTL4C1QE2C Product Specification
Finisar Corporation August 2016 Rev A1 Page 7
IX. 5BMechanical Specifications
The FTL4C1QE2C mechanical specifications are compliant to the QSFP+ MSA transceiver
module specifications.
Figure 2 – FTL4C1QE2C mechanical drawing
Figure 3 – FTL4C1QE2C production label
FTL4C1QE2C Product Specification
Finisar Corporation August 2016 Rev A1 Page 8
X. 14BReferences
1. INF-8438i – Specification for QSFP (Quad Small Formfactor Pluggable)
Transceiver, Rev 1.0, November 2006.
2. SFF-8436 – Specification for QSFP+ Copper and Optical Transceiver, Rev 4.7,
February 2013.
3. IEEE 802.3ba – PMD Type 40GBASE-LR4.
4. Directive 2011/65/EU of the European Council Parliament and of the Council, “on
the restriction of the use of certain hazardous substances in electrical and electronic
equipment”. Certain products may use one or more exemptions as allowed by the
Directive.
5. “Application Note AN-2038: Finisar Implementation of RoHS Compliant
Transceivers”.
6. “Application Note AN-2104: QSFP+ 40G LR4 Transceiver EEPROM Mapping,”
Rev. A, Finisar Corporation, June, 2013.
XI. 15BFor More Information
Finisar Corporation
1389 Moffett Park Drive
Sunnyvale, CA 94089-1133
Tel. 1-408-548-1000
Fax 1-408-541-6138
sales@finisar.com
www.finisar.com