Finisar Corporation – 7-May-16 Rev. B2 Finisar Page 1
Product Specification
100m Parallel MMF 100G QSFP28 Optical Transceiver
FTLC9551REPM
PRODUCT FEATURES
Hot-pluggable QSFP28 form factor
Supports 103.1Gb/s aggregate bit
rate
Power dissipation < 3.5W
RoHS-6 compliant
Commercial case temperature range
of 0°C to 70°C
Single 3.3V power supply
Maximum link length of 100m on
OM4 Multimode Fiber (MMF)
4x25Gb/s 850mm VCSEL-based
transmitter
4x25G electrical interface
Single MPO12 receptacle
I2C management interface
APPLICATIONS
100GBASE-SR4 100G Ethernet
Finisar’s FTLC9551REPM 100G QSFP28 transceiver modules are designed for use in
100 Gigabit Ethernet links over multimode fiber. They are compliant with the QSFP28
MSA
1
and IEEE 802.3bm 100GBASE-SR4
2
and CAUI-4
2
. Digital diagnostics functions
are available via the I2C interface, as specified by the QSFP28 MSA
1
and Finisar
Application Note AN-2141
3
. The transceiver is RoHS-6 compliant per Directive
2011/65/EU
4
and Finisar Application Note AN-2038
5
.
PRODUCT SELECTION
FTLC9551REPM
R: 100G Ethernet maximum bit rate (103.1Gb/s)
E: 4x25G parallel optics
P: Pull tab release
M: MPO receptacle
FTLC9551REPM Product Specification – January 2016
Finisar Corporation – 7-May-16 Rev. B2 Finisar Page 2
I. Pin Descriptions
Figure 1 – QSFP28-compliant 38-pin connector (per SFF-8679)
Pin
Symbol
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
29
Vcc Tx
+3.3 V Power supply transmitter
30
Vcc1
+3.3 V Power Supply