QSFP+ Series Preliminary
QDER4-QSF-LC.S40 Series
Single-Mode 40GBASE-ER4
QSFP+ Transceiver
RoHS CompliantFeatures◆ Supports 40Gbps◆ Single 3.3V Power Supply◆

Commercial Power dissipation <3.5W and andIndustrial Power dissipation <4.5W◆ Up to 40km over SMF◆◆

Operating case temperature range ofApplications

Standard: 0°C to 70°C

◆ 40GBASE-ER4 Ethernet

Industrial: -40°C to 85°C

◆ Infiniband QDR and DDR

Four 10G DFB base CWDM channels on◆transmitter side

Client-side 40G Telecom
connections◆ Duplex LC receptacles◆I2C interface with integrated Digital DiagnosticMonitoring◆ Safety Certification: TUV/UL/FDA*Note1◆ RoHS Compliant

Ordering Information
DataRate

Fiber

QDER4-QSF-LC.S40

40GbpsSMF

QDER4-QSF-LC.S40(WT)

40Gbps

SMF

Part No.

Distance

Interface

Temp.

DDMI

40km

LC

0℃~+70℃

Yes

40km

LC

-40°C to 85°C

Yes*(note2)

Note1: For the latest certification information, please check with Data Controls.
Note2: Over SMF*The product image only for reference purpose.

Data Controls Inc.
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QSFP+ Series Preliminary
Product Description
Data Controls’ QDER4-QSF-LC.S40 QSFP+ transceiver module is designed for 40Gigabit
Ethernet links over 40Km single mode fiber. It is compliant with IEEE 802.3bm 40GBASE-ER4.
Digital diagnostics functions are available via an I2C interface, as specified by the QSFP+ MSA.

Absolute Maximum Ratings
Parameter

Symbol

Min.

Max.

Unit

Storage Temperature

Ts-40+85°C

Supply Voltage

Vcc

-0.5

3.6V

Operating Relative Humidity

RH585%

Receiver Damage Threshold, perLane

Rxdmg

3.8dBm*Exceeding any one of these values may destroy the device immediately.

Recommended Operating Conditions
Parameter
Operating Case Temperature

Tc

SymbolMin.

QDER4-QSF-LC.S40

Max.

Unit

0+70°CQDER4-QSF-LC.S40(WT)

-40

+85°C

Vcc

3.135

3.465

V

3.5

W

4.5

W

40km

Power Supply Voltage
Commercial Power Dissipation

Typical

3.3

PD

Industrial Power Dissipation
Link Distance with G.652

DPerformance Specifications - ElectricalParameter

Symbol Min. Typ.

Supply voltage
Supply Current

3.1
Icc

Transmit turn-on time

Max

Unit

3.47

V

1.44

A

2000

ms

700

mVp-p110

ohms

850

mVp-p

7.5

mV110

ohms

Notes

Note3

Transmitter
Differential Input Voltage
SwingVin,pp190

Input Impedance (Differential)

Zin

90100

Rin > 100 kohms @DC

ReceiverDifferential output Voltage
SwingVout,pp300

AC common mode output
voltage
Output Impedance(Differential)
Output Transition Time

Zout

9010028
Data Controls Inc.
Page 2 of 7

ps

RMS

20%~80%V1.g

QSFP+ Series Preliminary
Note3: From power-on and end of any fault conditions.

Optical Characteristics
40GBASE-ER4 Operation
Parameter

SymbolMin.

TypicalMax.

Unit

10.3125

11.2

Gbps

Transmitter
Signaling Speed per Lane

BRAVESide Mode Launch PowerSMSRTotal average launch power

PT

Lane_0 Center Wavelength

λC01264.5

Lane_1 Center Wavelength

λC1

Lane_2 Center Wavelength

30dB
10.5

dBm

1271

1277.5nm

1284.51291

1297.5nm

λC21304.5

1311

1317.5nm

Lane_3 Center Wavelength

λC31324.5

1331

1337.5nm

Average Launch Power per
Lane*(Note4)

Peach-2.7

4.5

dBm

Optical modulation
amplitude*(Note5)

Poma

0.3

5.0

dBm

Differnce in Launch Powerbetween any two lanes (OMA)

Ptx,diff4.7

dB

Launch power in OMA minus
TDP, each lane

OMA-TDPTransmitter and dispersion
penalty(TDP), each lane

TDP-0.5

dBm
2.6

dB

Average launch power of OFF
transmitter per lane-30dBm

Optical Return Loss Tolerance

20dB

Transmitter Reflectance

RT-12dB

Relative Intensity Noise

Rin

-128

dB/Hz

Extinction Ratio*(Note6)

ER

Transmitter eye mask
definition{X1, X2, X3,
Y1, Y2, Y3}*(Not6)

5.5

dB

{0.25，0.4，0.45，0.25，0.28，0.4}
ReceiverSignaling Speed per Lane

10.3125

BRAVE

Data Rate Variation-100

Gbps+100ppm

Damage threshold*(Not7)

Rdam

3.8

Lane_0 Center Wavelength

λC01264.512711277.5nm

Lane_1 Center Wavelength

λC11284.51291

1297.5nm

Lane_2 Center Wavelength

λC21304.5

13111317.5

nm

Lane_3 Center Wavelength

λC31324.5

1331

1337.5nm

Average Receive Power perLane

Rpow

-21.2

-4.5

dBm

Data Controls Inc.
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dBm

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QSFP+ Series Preliminary
Receiver Sensitivity in OMA
per Lane*(Note8)

Pmin

LOS Assert

LOSA

LOS De-Assert

LOSD

LOS Hysteresis
Stressed Receiver Sensitivity(OMA) per Lane *(Note9)

-19

dBm

-34

dBm
-24

dBm

0.5

dB-16.8

RXSRSConditions of stressed receiver sensitivity test：
Vertical Eye Closure Penalty
VECP*(Note10)

dBm

2.2dB

Stressed J2 Jitter *(Note10)

J20.3UI

Stressed J9 Jitter *(Note10)

J90.47

UI

Note4: Average launch power, each lane (min) is informative and not the principal indicator of signal strength. A
transmitter with launch power below this value cannot be compliant; however, a value above this does not ensurecompliance.
Note5: Even if the TDP < 0.8dB, the OMA (min) must exceed this value.
Note6: Filtered, measured with a PRBS 231-1 test pattern @10.3Gbps.
Note7: The receiver shall be able to tolerate, without damage, continuous exposure to an optical input signal
having this average power level.
Note8: Minimum average optical power measured at BER less than 1E-12, with a 231-1 PRBS.
Note9: Measured with conformance test signal at TP3 for BER=1E-12.
Note10: Vertical eye closure penalty, stressed eye J2 Jitter, stressed eye J9 Jitter are test conditions formeasuring stressed receiver sensitivity. They are not characteristics of the receiver.

QSFP+ Transceiver Electrical Pad Layout

Data Controls Inc.
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QSFP+ Series Preliminary
Pin Arrangement and Definition
PinLogic

1Symbol

Description

PlugSequence

Notes
1GND

Ground12CML-I

Tx2n

Transmitter Inverted Data Input

33CML-I

Tx2p

Transmitter Non-Inverted Data Input

3

GND

Ground145CML-I

Tx4n

Transmitter Inverted Data Input

36CML-I

Tx4p

Transmitter Non-Inverted Data Input

3GND

Ground178

LVTTL-I

ModSelL

Module Select39

LVTTL-I

ResetL

Module Reset

3VccRx+3.3V Power Supply Receiver

21011LVCMOS- I/O

SCL

2-wire serial interface clock

312

LVCMOS- I/OSDA

2-wire serial interface data

3GND

Ground11314CML-O

Rx3p

Receiver Non-Inverted Data Output

315CML-O

Rx3n

Receiver Inverted Data Output

3GND

Ground116

1121117CML-O

Rx1p

Receiver Non-Inverted Data Output

318CML-O

Rx1n

Receiver Inverted Data Output

319

GND

Ground1120

GND

Ground

1121

CML-O

Rx2n

Receiver Inverted Data Output

322CML-O

Rx2p

Receiver Non-Inverted Data Output

3GND

Ground12324CML-O

Rx4n

Receiver Inverted Data Output

325CML-O

Rx4p

Receiver Non-Inverted Data Output

3GND

Ground1261127

LVTTL-O

ModPrsL

Module Present

328

LVTTL-OIntLInterrupt

329

VccTx+3.3V Power supply transmitter

2230

Vcc1+3.3V Power supply

22

LPModeLow Power Mode

3GND

Ground131

LVTTL-I

3233

CML-I

Tx3p

Transmitter Non-Inverted Data Input

334

CML-I

Tx3n

Transmitter Inverted Data Input

3GND

Ground

13536

CML-I

Tx1p

Transmitter Non-Inverted Data Input

337

CML-I

Tx1nTransmitter Inverted Data Input

3GNDGround

138

Data Controls Inc.
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QSFP+ Series Preliminary
1: GND is the symbol for signal and supply (power) common for the QSFP+ module. All are common
within the QSFP+ module and all module voltages are referenced to this potential unless otherwise
noted. Connect these directly to the host board signal-common ground plane.
2: Vcc Rx, Vcc1 and Vcc Tx are the receiver and transmitter power supplies and shall be applied
concurrently. Requirements defined for the host side of the Host Edge Card Connector are listed inTable 6. Recommended host board power supply filtering is shown in Figures 3 and 4. Vcc Rx Vcc1and Vcc Tx may be internally connected within the QSFP+ Module in any combination. The connector
pins are each rated for a maximum current of 500mA.

Mechanical Specifications*This 2D drawing only for reference, please check with Data Controls before ordering.

Obtaining Document
You can visit our website: https://www.dci.jp
Or contact Data Controls Inc., Listed at the end of the documentation to get the latest documents.

Revision History
Revision History

Revision
V1.a

V1.b

V1.cPreliminary.

Release DateMar 9, 2017

Update optical parameters and mechanicalspecifications

Add the industrial temperature range. Updated thepower dissipation.

Data Controls Inc.
Page 6 of 7

July 26, 2018

August 2, 2018

V1.g

QSFP+ Series Preliminary
V1.d

Updated the product image and the mechanicalspecifications.

Updated the power dissipation, LOS Assert parameters
and regulatory compliance information.
V1.e

Oct 9, 2018

December 13,2018

Add RX damage threshold parameter.
V1.f

V1.g

Jun 13, 2019
Correcting a clerical error.

Jun 20, 2019

Notice:Data Controls reserves the right to make changes or discontinue any optical link product orservice identified in this publication, without notice, in order to improve design and/or
performance. Applications that are described herein for any of the optical link products are forillustrative purposes only. Data Controls makes no representation or warranty that suchapplications will be suitable for the specified use without further testing or modification.

Contact:
E-mail:sales@dci.jp
https://www.dci.jp

Data Controls Inc.
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