Adapter Converter Module  

100G QSFP28 to 25G SFP28 Adapter Converter Module

LA-QSFP28-SFP25G

The QSFP28 to SFP28 Adapter (QSA) Module offers 25 (10) Gigabit Ethernet connectivity for Quad Small Form-Factor Pluggable QSFP28 (QSFP+) -only platforms.

100G QSFP28 to 25G SFP28 Adapter Converter Module

LA-QSFP28-SFP25G

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 Deion


PIN

Logic

Symbol

Deion

Note

1

 

VeeT

ModulTransmitter 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-wire seriainterface data line

4

5

LVTTL-I/O

SCL

MOD-DEF2-wire seriainterface clock line

4

6

 

Mod_Abs

Module Absent

5

7

LVTTL-I

RS0

Rate Select Zero

 

8

LVTTL-O

Rx_LOS

ModulReceiver 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 InverteData Output

 

13

CML-O

RD+

Receiver Non-InverteData Output

 

14

 

VeeR

ModulReceiver Ground

1

15

 

VccR

ModulReceiver 3.3V Supply

 

16

 

VccT

ModulTransmitter 3.3V Supply

 

17

 

VeeT

ModulTransmitter Ground

1

18

CML-I

TD+

Transmitter Non-InverteDatInput

 

19

CML-I

TD-

Transmitter InverteData Input

 

20

 

VeeT

ModulTransmitter Ground 

1




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