SFP-GSS-SPO250-LRCC
The LYCOM Technologies GSS-SP0250-LRCC is a single-Channel, Pluggable, Fiber-Optic SFP28 for 25 Gigabit Ethernet and Infiniband EDR Applications. It is a high performance module for short-range data communication and interconnect applications which operate at 25.78125 Gbps up to 10km. This module is designed to operate over single mode fiber systems using a nominal wavelength of 1310nm. The electrical interface uses a 20 contact edge type connector. The optical interface uses duplex LC receptacle. This module incorporates LYCOM Technologies proven circuit and technology to provide reliable long life, high performance, and consistent service
SFP-GSS-SPO250-LRCC
Hot-pluggable SFP28 form factor
Supports 25.78125Gbps data rate
Maximum link length of 10km
1310nm DFB laser and PIN photo-detector
Internal CDR on both Receiver and Transmitter channels
Duplex LC receptacle
Single 3.3V power supply
Power consumption < 1.1W
Digital diagnostics function are available via the I2C interface
Operating case temperature range: 0 to 70°C
Compliant with IEEE 802.3cc 25GBASE-LR standard
RoHS compliant (lead free)
Pin Descriptions
| Pin |
Logic |
Symbol |
Name/Description |
Note |
| 1 |
|
VeeT |
Module Transmitter Ground |
1 |
| 2 |
LVTTL-O |
TX_Fault |
Module Transmitter Fault |
2 |
| 3 |
LVTTL-I |
TX_Dis |
Transmitter Disable; Turns off transmitter laser output |
3 |
| 4 |
LVTTL-I/O |
SDA |
2-Wire Serial Interface Data Line |
|
| 5 |
LVTTL-I |
SCL |
2-Wire Serial Interface Clock |
|
| 6 |
|
MOD_ABS |
Module Absent, connected to VeeT or VeeR in the module |
|
| 7 |
LVTTL-I |
RS0 |
Receiver Rate Select |
|
| 8 |
LVTTL-O |
RX_LOS |
Receiver Loss of Signal Indication Active LOW |
2 |
| 9 |
LVTTL-I |
RS1 |
Transmitter Rate Select |
|
| 10 |
|
VeeR |
Module Receiver Ground |
1 |
| 11 |
|
VeeR |
Module Receiver Ground |
1 |
| 12 |
CML-O |
RD- |
Receiver Inverted Data Output |
|
| 13 |
CML-O |
RD+ |
Receiver Non-Inverted Data Output |
|
| 14 |
|
VeeR |
Module Receiver Ground |
1 |
| 15 |
|
VccR |
Module Receiver 3.3 V Supply |
|
| 16 |
|
VccT |
Module Transmitter 3.3 V Supply |
|
| 17 |
|
VeeT |
Module Transmitter Ground |
1 |
| 18 |
CML-I |
TD+ |
Transmitter Non-Inverted Data Input |
|
| 19 |
CML-I |
TD- |
Transmitter Inverted Data Input |
|
| 20 |
|
VeeT |
Module Transmitter Ground |
1 |
Note:
1. The module signal ground contacts, VeeR and VeeT, should be isolated from the module case.
2. This contact is an open collector/drain output contact and shall be pulled up on the host. Pull ups can be connected to one of several power supplies, however the host board design shall ensure that no module contact has voltage exceeding module VccT/R +0.5 V.
3. Tx_Disable is an input contact with a 4.7 kΩ to 10 kΩ pullup to VccT inside the module.
Ordering Information:
| Part Number |
Product Description |
| SFP-GSS-SPO250-LRCC |
SFP28 LR COB version, 25.78125Gb/s, 1310nm, 10km, SMF, LC,0ºC ~ +70ºC |
