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QSFP 40G LR4 2km
QSFP 40G LR4 2km

QSFP 40G LR4 2km

The QSFP+ 40G-LR4-2km module is a highly integrated 4x10G transceiver focused on reach, bandwidth, density and cost for high port-count 40G systems, and client-side 40G interfaces. The 40G QSFP+ LR4 Lite transceiver is designed for applications based on the IEEE802.3ba 40GBASE-LR4 standard of up to 2km reach.


Features of QSFP 40G LR4 2km

  • Reach: 2 km via SMF

  • Uncooled CWDM DFB lasers, directly modulated

  • Using ITU G.694.2 wavelength grid at 1271, 1291, 1311, and 1331nm

  • User controllable Transmit Input Equalization and Receiver Output Amplitude

  • MSA-compliant performance monitoring via I2C interface

  • Fiber connector: SMF LC duplex connector

  • Compliant with QDR/DDR InfiniBand data rates

  • Hot-pluggable electrical interface

  • 0–70°C operating temp

  • Power dissipation < 3.5W

  • RoHS6 compliant (lead-free)



Applications of QSFP 40G LR4 2km

  • 40G Ethernet

  • InfiniBand QDR and DDR interconnects


Specifications of QSFP 40G LR4 2km

Optical Transmitter Performance
Optical Receiver Performance
Recommended Operating Environment

Parameter

Symbol

Min

Typical

Max

Unit

Center Wavelength

Ch0

λ0

1264.5

-

1277.5

nm

Ch1

λ1

1284.5

-

1297.5

nm

Ch2

λ2

1304.5

-

1317.5

nm

Ch3

λ3

1324.5

-

1337.5

nm

Bit Rate per Channel

B

10.3125

-

-

Gb/s

Total Average Launch Power

POUT

-

-

8.0

dBm

Side Mode Suppression Ratio

SMSR

30

-

-

dB

Average launch power, each lane


-6.8

-

2.0

dBm

Optical Modulation Amplitude (each lane)

OMA

-6.0

-

3.5

dBm

Optical Modulation Amplitude (OMA) - TDP, per lane (min)


-7.8

-


dBm

Transmission & dispersion penalty,

each lane

TDP

-

-

2.3

dB

RIN12 OMA

-

-

-

-128

dB/Hz

Transmitter Reflectance

-

-

-

-12

dB

Extinction Ratio

ER

3.5

-

-

dB

Transmitter eye mask definition {X1, X2, X3, Y1, Y2, Y3}

{0.25, 0.4, 0.45, 0.25, 0.28, 0.4}

Average launch power of OFF transmitter, each lane

-

-

-

-30

dBm

Optical return loss tolerance

-

-

-

20

dB


Parameter

Symbol

Min

Typical

Max

Unit

Center Wavelength

Ch0

λ0

1264.5

1271

1277.5

nm

Ch1

λ1

1284.5

1291

1297.5

nm

Ch2

λ2

1304.5

1311

1317.5

nm

Ch3

λ3

1324.5

1331

1337.5


nm

Bit Rate per Channel

B

10.3125

-

10.7546

Gb/s

Damage threshold, each lane

-

3.4

-

-

dBm

Average receive power, each lane

-

-13.5

-

2.0

dbm

Unstressed Sensitivity (OMA) at 10 x 10-12BER

OMAin

-

-

-10.5

dBm

Stressed Sensitivity (OMA)

OMAin, str

-


-8.5

dBm

Receiver Reflectance

ORL

-

-

-26

dB

Vertical eye closure penalty, each lane

VECP

-

-

1.9

dB

Receive electrical 3 dB upper cutoff frequency, per lane

-

-

-

12.3


GHZ

Stressed eye J2 Jitter, each lane

J2

-

-

0.42

UI

Stressed eye J9 Jitter, each lane

J9

-

-

0.65

UI

Eye mask coordinates #1 {X1, X2 Y1, Y2}  Hit ratio = 5 x 10E-5

{ 0.29, 0.5 150, 425}


Recommended Operating Environment specifies parameters for which the electrical and optical characteristics hold unless otherwise noted.


Parameter

Symbol

Min

Typical

Max

Unit

Power Supply Voltage

VCC

3.135

3.300

3.465

V

Operating Case Temperature

TC

0

25

70

°C


Pin Descriptions of QSFP 40G LR4 2km

QSFP 40G LR4 2km



Pin Definition of QSFP 40G LR4 2km

Pin

Symbol

Name/Description

1

GND

Ground

2

Tx2n

Transmitter Inverted Data Input

3

Tx2p

Transmitter Non-Inverted Data Input

4

GND

Ground

5

Tx4n

Transmitter Inverted Data Input

6

Tx4p

Transmitter Non-Inverted Data Input

7

GND

Ground

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

14

Rx3p

Receiver Non-Inverted Data Output

15

Rx3n

Receiver Inverted Data Output

16

GND

Ground

17

Rx1p

Receiver Non-Inverted Data Output

18

Rx1n

Receiver Inverted Data Output

19

GND

Ground

20

GND

Ground

21

Rx2n

Receiver Inverted Data Output

22

Rx2p

Receiver Non-Inverted Data Output

23

GND

Ground

24

Rx4n

Receiver Inverted Data Output

25

Rx4p

Receiver Non-Inverted Data Output

26

GND

Ground

27

ModPrsL

Module Present

28

IntL

Interrupt

29

Vcc Tx

+3.3 V Power supply transmitter

30

Vcc1

+3.3 V Power Supply

31

LPMode

Low Power Mode

32

GND

Ground

33

Tx3p

Transmitter Non-Inverted Data Input

34

Tx3n

Transmitter Inverted Data Input

35

GND

Ground

36

Tx1p

Transmitter Non-Inverted Data Input

37

Tx1n

Transmitter Inverted Data Input

38

GND

Ground



Important Notice of QSFP 40G LR4 2km

Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by T&S before they become applicable to any particular order or contract. In accordance with the T&S policy of continuous improvement specifications may change without notice.


The publication of information in this data sheet does not imply freedom from patent or other protective rights of T&S or others. Further details are available from any T&S sales representative.


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