100G QSFP28 BIDI Tx1291nm/ Rx1311 nm

Data Rate(optical) 

Laser

Fiber Type 

Distance 

Optical Interface 

Temp 

DDMI 

Latch Color 

106.25Gbps

Tx1291/Rx1311 

SMF

20km

LC

0~70C 

Y

Purple

106.25Gbps

Tx1311/Rx1291 

SMF

20km

LC

0~70C 

Y

Red

Parameter

Symbol 

Min.

Typical

Max.

Unit

Notes

Storage Temperature

TS

-40

-

+85

°C

Supply Voltage

VCC

-0.5

-

+4.0

V

Operating Relative Humidity 

RH

-

-

+85

%

Parameter

Symbol

Min.

Typical

Max.

Unit

Notes

Operating Case Temperature 

TC

0

-

+70

°C

Power Supply Voltage

VCC

3.13

3.3

3.47

V

Transmission Distance

TD

-

-

20

km

Over SMF

Parameter

Symbol

Min.

Typical 

Max.

Unit

Notes

Transmitter

Center Wavelength

CW

1284.5

1291

1297.5

nm

1304.5

1311

1317.5

nm

Signaling Rate

SR

53.125

GBd

Frequency Offset

Foffset

-100

100

ppm

Average Launch Power  

PTX

-0.2

-

6.6

dBm

1

Outer Optical Modulation Amplitude (OMAouter) (min) for TDECQ < 1.4 dB for 1.4 dB ≤ TDECQ ≤ TDECQ (max) 

OMAouter 

2.8

-

-

dBm

TDECQ < 1.4 dB 

1.4+TDECQ 

-

-

dBm

TDECQ > 1.4 dB 

Transmitter and dispersion eye closure for PAM4 (TDECQ) (max)  

TDECQ

-

-

3.6

dBm

Average Output Power (Laser Turn off)

Poff

-

-

-30

dBm

Side Mode Suppression Ratio

SMSR

30

-

-

dB

Extinction Ratio

ER

3.5

-

-

dB

RIN_OMA

RIN

-

-

-136

dB/Hz 

Transmitter reflectance

Tref

-

-

-26

dB

Optical Return Loss Tolerance

ORLT

-

-

15.6

dB

Receiver

Center Wavelength

CW

1284.5

1291

1297.5

nm

1304.5

1311

1317.5

nm

Damage threshold

Pdamage 

7.6

-

-

dBm

2

Average Rx Power

PRx

-10

-

6.6

dBm

3

Receive power _OMAouter

POMA

-

-

6.8

dBm

Receiver sensitivity _OMAouter

for TDECQ < 1.4 dB  

for 1.4 dB TDECQ 3.4 dB

SEN _OMA 

-

-

-7.6

–9 + TECQ 

dBm

4

Reflectance

Ref

-

-

-26

dB

Los Assert

LosA

-26

-

dBm

Los De-Assert

LosDA

-

-

-10

dBm

Los Hysteresis

LosH

0.5

-

-

dB

Stressed receiver sensitivity _OMAouter

SRS

-

-

-5.4

dBm

5

Conditions of stressed receiver sensitivity teste :

Stressed eye closure for PAM4 (SECQ)

3.6

dB

Parameter

Symbol

Min.

Typical 

Max.

Unit

Notes 

Transmitter (Module Input)

Input Differential Impedance  

Rin

-

100

-

Ohm

Differential Data Input Amplitude  

VIN,P-P

-

900

mVpp 

Differential termination mismatch (max) 

D-mismatch 

-

-

10

%

DC common-mode input voltage  

-0.3

-

2.8

V

Transition time(20%~80%)

Tr Tf

10

-

-

ps

LPMode, Reset and ModSelL / Tx dis

VIL

-0.3

-

0.8

V

LPMode, Reset and ModSelL / Tx dis

VIH

2.0

-

VCC+0.3 

V

Receiver (Module Output)

Output Differential Impedance  

Rout

-

100

-

Ohm

Differential Data Output Amplitude

VOUTP-P

-

-

900

mVpp 

Differential termination mismatch (max) 

D-mismatch 

-

-

10

%

Transition time, 20% to 80%

Tr Tf

12

-

ps

ModPrsL and IntL/ Rx los

VOL

0

-

0.4

V

ModPrsL and IntL/ Rx los

VOH

 VCC-0.5 

-

VCC+0.3 

V

Parameter

Range

Accuracy

Unit

Calibration

Temperature

0 to 70

±3

ºC

Internal

Voltage

0 to Vcc

±3%

V

Internal

Tx Bias Current

0 to 100

±10%

mA

Internal

Tx Output Power

-0.2 to 6.8

±3

dB

Internal

Rx Input Power

-10 to 6.6

±3

dB

Internal

Parameter

Symbol 

Min 

Max 

Unit 

Calibration

Notes

Initialization time 

t_init

10

s

Time from power on or hot plug until the module is fully functional. This time applies to Power Class 2 or higher modules when LPMode is pulled low by the host, and to all Power Class 1 modules. 

Room Temperature 

PIN

Logic

Symbol

Description

Plug Seq. 

Notes

1

GND

Ground

1

1

2

CML-I

Tx2n

Transmitter Inverted Data Input

3

3

CML-I

Tx2p

Transmitter Non-Inverted Data output 

3

4

GND

Ground

1

1

5

CML-I

Tx4n

Transmitter Inverted Data Input

3

6

CML-I

Tx4p

Transmitter Non-Inverted Data output 

3

7

GND

Ground

1

1

8

LVTLL-I

ModSelL

Module Select

3

9

LVTLL-I

ResetL

Module Reset

3

10

VccRx

﹢3.3V Power Supply Receiver

2

2

11

LVCMOS-I/O

SCL

2-Wire Serial Interface Clock

3

12

LVCMOS-I/O

SDA

2-Wire Serial Interface Data

3

13

GND

Ground

1

14

CML-O

Rx3p

Receiver Non-Inverted Data Output

3

15

CML-O

Rx3n

Receiver Inverted Data Output  

3

16

GND

Ground  

1

1

17

CML-O

Rx1p

Receiver Non-Inverted Data Output  

3

18

CML-O

Rx1n

Receiver Inverted Data Output  

3

19

GND

Ground  

1

1

20

GND

Ground  

1

1

21

CML-O

Rx2n

Receiver Inverted Data Output  

3

22

CML-O

Rx2p

Receiver Non-Inverted Data Output  

3

23

GND

Ground  

1

1

24

CML-O

Rx4n

Receiver Inverted Data Output  

3

1　

25

CML-O

Rx4p

Receiver Non-Inverted Data Output  

3

26

GND

Ground  

1

1

27

LVTTL-O

ModPrsL

Module Present  

3

28

LVTTL-O

IntL/Rx_LOS

Interrupt/Rx_LOS

3

3　

29

VccTx

+3.3 V Power Supply transmitter  

2

2

30

Vcc1

+3.3 V Power Supply  

2

2

31

LVTTL-I

LPMode/TxDIS 

Low Power Mode/Tx_Disable

3

3　

32

GND

Ground  

1

1

33

CML-I

Tx3p

Transmitter Non-Inverted Data Input  

3

34

CML-I

Tx3n

Transmitter Inverted Data Output  

3

35

GND

Ground  

1

1

36

CML-I

Tx1p

Transmitter Non-Inverted Data Input  

3

37

CML-I

Tx1n

Transmitter Inverted Data Output  

3

38

GND

Ground  

1

1

Part Number 

Product Description

TX 1291nm, RX 1311nm, 100Gbps, 20km, Bi-Directional Simplex LC QSFP28 Transceiver, 0ºC ~ +70ºC, With DDM. 

B 

TX 1311nm, RX 1291nm, 100Gbps, 20km, Bi-Directional Simplex LC QSFP28 Transceiver, 0ºC ~ +70ºC, With DDM.