The QSFP28 to SFP28 Adapter (QSA) Module offers 25 (10) Gigabit Ethernet connectivity for Quad Small Form-Factor Pluggable QSFP28 (QSFP+) -only platforms.
The QSFP28 to SFP28 Adapter (QSA) Module offers 25 (10) Gigabit Ethernet connectivity for Quad Small Form-Factor Pluggable QSFP28 (QSFP+) -only platforms.
The QSFP28 to SFP28 Adapter (QSA) Module offers 25 (10) Gigabit Ethernet connectivity for Quad Small Form-Factor Pluggable QSFP28 (QSFP+) -only platforms. It allows smooth and cost- effective migration to 100 (40) Gigabit Ethernet by providing an option to use lower-speed Enhanced Small Form-Factor Pluggable SFP28 (SFP+) modules in empty QSFP28 (QSFP+) ports or when the other end of the network is running at lower speeds. The QSA Module converts a QSFP28 (QSFP+) port into an SFP28 (SFP+) port. With this adapter, customers have the flexibility to use any SFP28 (SFP+) module or cable to connect to a lower-speed port on the other end of the network. This flexibility allows a cost-effective transition to 100 (40) Gigabit Ethernet by maximizing the use of high-density 100 (40) Gigabit Ethernet QSFP28 (QSFP+) platforms. This adapter supports all SFP28 (SFP+) optics and cable reaches. Compatible Switch Models and SFP28 Modules. A list of SFP28 transceiver modules that can be plugged into the QSA module is provided in Table 1.
Trouble-free installation and network bring-up
Compliant to industry standards: QSFP+ MSA SFF-8436 / SFP+ MSA SFF-8431
Precision process control for minimization of pair-to-pair skew
1 independent duplex channels operating at 25Gbps, 10Gbps, also support for 2.5Gbps, 5Gbps data rates
All-metal housing for superior EMI performance
100-ohm differential impedance system
Operating case temperature: -20℃ to 85℃
Low ion loss
Low crosstalk
Secure latching mechanism
RoHS compliant
Supporting Modules
Item |
Product Name |
Product Deion |
1 |
LA-OT-25G-SR |
25GBASE-SR SFP28 Module for Multimode Fiber |
2 |
LA-OT-25G-LR |
25GBASE-LR SFP28 Module for Single-Mode Fiber |
3 |
LA-OT-10GT-RJ |
10GBASE-TX SFP+ Module for Cat.6a RJ45 Cables |
4 |
LA-OT-10GMM8-03 |
10GBASE-SR SFP+ Module for Multimode Fiber |
5 |
LA-OT-10G3-20 |
10GBASE-LR SFP+ Module for Single-Mode Fiber |
6 |
LA-OT-10G5-40 |
10GBASE-ER SFP+ Module for Single-Mode Fiber |
7 |
LA-OT-10G5-80 |
10GBAE-ZR SFP+ Modules for Single-Mode Fiber |
8 |
LA-SFPP-T-xx-Pxx |
SFP+ Copper Cables (1-m to 10-m lengths) |
9 |
LA-AOC10G-OMX-X |
SFP+ Active Optical Cables (1-m to 10-m lengths) |
Operation Environment
Parameter Symbol |
Symbol |
Min. |
Max. |
Units |
Operating Case Temperature |
Topc |
-20 |
85 |
°C |
Storage Temperature |
Tst |
-40 |
125 |
°C |
Relative Humidity (non- condensation) |
RS |
|
85 |
% |
Supply Voltage |
VCC3 |
3.15 |
3.45 |
V |
Pin Assignment (QSFP+)
PIN |
Logic |
Symbol |
Deion |
Note |
1 |
|
GND |
Ground |
1 |
2 |
CML-I |
Tx2n |
Transmitter Inverted Data Input |
|
3 |
CML-I |
Tx2p |
Transmitter Non-Inverted Data output |
|
4 |
|
GND |
Ground |
1 |
5 |
CML-I |
Tx4n |
Transmitter Inverted Data Input |
|
6 |
CML-I |
Tx4p |
Transmitter Non-Inverted Data output |
|
7 |
|
GND |
Ground |
1 |
8 |
LVTLL-I |
ModSelL |
Module Select |
|
9 |
LVTLL-I |
ResetL |
Module Reset |
|
10 |
|
VccRx |
﹢3.3V Power Supply Receiver |
2 |
11 |
LVCMOS-I/O |
SCL |
2-Wire Serial Interface Clock |
|
12 |
LVCMOS-I/O |
SDA |
2-Wire Serial Interface Data |
|
13 |
|
GND |
Ground |
|
14 |
CML-O |
Rx3p |
Receiver Non-Inverted Data Output |
|
15 |
CML-O |
Rx3n |
Receiver Inverted Data Output |
|
16 |
|
GND |
Ground |
1 |
17 |
CML-O |
Rx1p |
Receiver Non-Inverted Data Output |
|
18 |
CML-O |
Rx1n |
Receiver Inverted Data Output |
|
19 |
|
GND |
Ground |
1 |
20 |
|
GND |
Ground |
1 |
21 |
CML-O |
Rx2n |
Receiver Inverted Data |
|
22 |
CML-O |
Rx2p |
Receiver Non-Inverted Data Output |
|
23 |
|
GND |
Ground |
1 |
24 |
CML-O |
Rx4n |
Receiver Inverted Data Output |
1 |
25 |
CML-O |
Rx4p |
Receiver Non-Inverted Data Output |
|
26 |
|
GND |
Ground |
1 |
27 |
LVTTL-O |
ModPrsL |
Module Present |
|
28 |
LVTTL-O |
IntL |
Interrupt |
|
29 |
|
VccTx |
+3.3 V Power Supply transmitter |
|
30 |
|
Vcc1 |
+3.3 V Power Supply |
|
31 |
LVTTL-I |
LPMode |
Low Power Mode |
|
32 |
|
GND |
Ground |
1 |
33 |
CML-I |
Tx3p |
Transmitter Non-Inverted Data Input |
|
34 |
CML-I |
Tx3n |
Transmitter Inverted Data Output |
|
35 |
|
GND |
Ground |
1 |
36 |
CML-I |
Tx1p |
Transmitter Non-Inverted Data Input |
|
37 |
CML-I |
Tx1n |
Transmitter Inverted Data Output |
|
38 |
|
GND |
Ground |
1 |
PIN |
Logic |
Symbol |
Deion |
Note |
1 |
|
VeeT |
Module Transmitter Ground |
1 |
2 |
LVTTL-O |
Tx_Fault |
Transmitter Fault |
2 |
3 |
LVTTL-I |
Tx_Disable |
Transmitter Disable |
3 |
4 |
LVTTL-I/O |
SDA |
MOD-DEF2 2-wire serial interface data line |
4 |
5 |
LVTTL-I/O |
SCL |
MOD-DEF1 2-wire serial interface clock line |
4 |
6 |
|
Mod_Abs |
Module Absent |
5 |
7 |
LVTTL-I |
RS0 |
Rate Select Zero |
|
8 |
LVTTL-O |
Rx_LOS |
Module Receiver Loss of Signal |
2 |
9 |
LVTLL-I |
RS1 |
Rate Select One |
|
10 |
|
VeeR |
﹢3.3V Power Supply Receiver |
1 |
11 |
|
VeeR |
2-Wire Serial Interface Clock |
|
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 3.3V Supply |
|
16 |
|
VccT |
Module Transmitter 3.3V 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 |
|
Ordering Information |
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Photo | Model | Description |
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