Product Specification
40GE Universal LM4 QSFP+ Optical Transceiver Module
FTL4C3QE2C
9BPRODUCT FEATURES
1
Hot-pluggable QSFP+ form factor
Operates over duplex multimode and
single mode fiber with dual LC
receptacles
Supports 41.2 Gb/s aggregate bit rate
Power dissipation < 3.5W
Commercial case temperature range
0C to 70C
Maximum link length of 140m on
OM3, 160m on OM4, and 1km on
SMF
APPLICATION
Uncooled 4x10Gb/s CWDM
40G Ethernet over MMF and
transmitter
SMF
XLPPI electrical interface
Built-in digital diagnostic functions,
including Tx/Rx power monitoring
RoHS-6 compliant
Finisars FTL4C3QE2C QSFP+ transceiver modules are designed for use in 40 Gigabit
Ethernet links over duplex multimode or single mode fiber. They are compliant with the
1,2 3
QSFP+ MSA and represent a multimode adaptation of IEEE 802.3ba 40GBASE-LR4
refered to as LM4. Digital diagnostics functions are available via an I2C interface, as specified
by the QSFP+ MSA. The optical transceiver is compliant per the RoHS Directive
4 5
2011/65/EU . See Finisar Application Note AN-2038 for more details .
3B
PRODUCT SELECTION
16BFTL4C3QE2C
C3: 1271 - 1331 nm CWDM over MMF and SMF
E: 40G Ethernet
2: Second generation product
C: Commercial temperature range
Finisar Corporation August 2016 Rev. A1 Page 1 FTL4C3QE2C Product Specification
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
27 ModPrsL Module Present
28 IntL Interrupt
Finisar Corporation August 2016 Rev. A1 Page 2