QSFP28 Series Preliminary
HDER4-QSF-LC.S40
Single-Mode 100GBASE 40km QSFP28 Transceiver
Single-Mode OTU4 4I1-9D1F 30km QSFP28 Transceiver
RoHS CompliantFeatureSupports 103Gbps & 112 Gbps

Single 3.3V Power SupplyPower dissipation < 5WUp to 40km over SMF

Commercial case temperature range of0°C to 70°C

Four 25Gbps/28Gbps EML LAN-WDM lasers ontransmitter side

Applications



APD and TIA array on the receiver side



4x25Gbps/28Gbps electrical interface

Duplex LC receptacles

I2C interface with integrated Digital Diagnostic



100G 40km applications
with FEC on host side

100G Datacom& Telecom
connections

MonitoringSafety Certification: TUV/UL/FDA*Note1



RoHS Compliant



OTU4 4I1-9D1F

Ordering Information
Part No.

DataRate

Fiber

HDER4-QSF-LC.S40*(note2) 112Gbps

SMF

Distance*(note3)40kmInterfaceTemp.

DDMI

LC

0℃~+70℃

Yes

Note1: For the latest certification information, please check with Data
Controls Inc.. Note2: 112G 30km applications; 103G 40km with FEC onhost side.
Note3: Over SMF*The product image only for reference purpose.

Data Controls Inc.
Page 1 of 8V1.cQSFP28 Series Preliminary
Absolute Maximum Ratings
Parameter

Symbol

Min.

Max.

Unit

Storage Temperature

Ts-40+85°C

Supply Voltage

Vcc

-0.5

3.6

V

Operating Relative Humidity

RH585%*Exceeding any one of these values may destroy the device immediately.

Recommended Operating Conditions
Parameter

SymbolMin

Operating Case Temperature

Tc

0Power Supply Voltage

Vcc

3.135

Power Dissipation

PD

Typical
3.3

Max

Unit

70°C

3.465

V5W

Performance Specifications – ElectricalParameter

SymbolMin
Transmitter

TypicalDifferential data input swing per lane
Input Impedance (Differential)

ZinMax

Unit

900

mvp-p

10%

Stressed input parameters
Eye width

0.46

Applied pk-pk sinusoidal jitter

UIIEEE 802.3bm Table 88-13

Eye height95

DC common mode voltage-350

mv2850

mv

900

mvp-p

10%

ReceiverDifferential output amplitude

200

Output Impedance (Differential)

Zout

Eye width

0.57

UI

Eye height differential

228

mv

Vertical eye closure

5.5dBMax

Unit

Optical Characteristics
100GBASE Operation
ParameterSignaling Speed per Lane

SymbolMinTransmitter
BRAVE

Data Rate Variation

Typical25.78-100Gbps+100ppm

Lane_0 Center Wavelength

λC01294.53

1295.56

1296.59nm

Lane_1 Center Wavelength

λC11299.02

1300.051301.09nm

Lane_2 Center Wavelength

λC21303.54

1304.581305.63nm

Lane_3 Center Wavelength

λC31308.09

1309.141310.19nm

Data Controls Inc.
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QSFP28 Series Preliminary
Spectral Width (-20dB)∆λ1nm

Total Average Output PowerPo

12.5dBm

Average Launch Power per
Lane*(Note4)

Peach-2.5

6.5dBm

Optical Modulation Amplitude(OMA), each lane*(Note5)

Peach(OMA)

0.5

6.5dBmAverage launch power of OFFtransmitter per lane

Poff-30

dBm

Side-mode suppression ratio

SMSR

Transmitter dispersion
penalty , each lane*(Note6)

TDP

30dB
2.0

dB

Difference in launch power
between any two lanes (OMA)

4dB

Optical Return Loss Tolerance

20dB

Transmitter reflectance*(Note7)-26

Extinction Ratio

ER4.5

Transmitter eye mask
definition {X1, X2, X3, Y1, Y2,Y3}*(Note8)dB{0.25, 0.4, 0.45, 0.25, 0.28, 0.4}

ReceiverSignaling Speed per Lane

BRAVE

Data Rate Variation

25.78-100Gbps+100ppm

Receiver overload per Lane

Psat-3dBm

Lane_0 Center Wavelength

λC01294.531295.56

1296.59nm

Lane_1 Center Wavelength

λC11299.02

1300.051301.09nm

Lane_2 Center Wavelength

λC21303.54

1304.581305.63nm

Lane_3 Center Wavelength

λC31308.09

1309.141310.19nm

Average Receive Power perLane*(Note9)

Rx_pow

-20.5

-3.5

dBm

Damage threshold perlane(min) *(Note10)

Pdamage-2.5

dBm

Receive Sensitivity in OMAper Lane*(Note11)

Rx_sens

-18.5

dBm

Stressed Receiver Sensitivity(OMA) per Lane*(Note12)

RXSRS

-16

dBm

Receive Sensitivity in OMAper Lane*(Note13)

Rx_sens

-14.8

dBm

Stressed Receiver Sensitivity(OMA) per Lane*(Note14)

RXSRS

-13

dBm

Receiver Reflectance

ORL

-26

dB

LOS Assert

LOSA

LOS De-Assert

LOSD

-35

Data Controls Inc.
Page 3 of 8dBm
-25

dBm
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QSFP28 Series Preliminary
LOS Hysteresis

0.5

dB

OTU4 4I1-9D1F Operation
ParameterSignaling Speed per Lane

SymbolMin
Transmitter
BRAVE

TypicalMax

Unit

27.95

Data Rate Variation

-20

Gbps
+20

ppm

Lane_0 Center Wavelength

λC01294.531295.56

1296.59nm

Lane_1 Center Wavelength

λC11299.02

1300.051301.09nm

Lane_2 Center Wavelength

λC21303.54

1304.581305.63nm

Lane_3 Center Wavelength

λC31308.09

1309.141310.19

nm

Spectral Width (-20dB)

∆λ1

nm

Total Average Output PowerPo

12.5

dBm

Average Launch Power perLane*(Note4)

Peach-2.5

6.5

dBm

Optical Modulation Amplitude(OMA), each lane*(Note5)

Peach(OMA)

0.5

6.5

dBm

Average launch power of OFF
transmitter per lane

Poff-30

dBm

Side-mode suppression ratio

SMSR

Transmitter dispersion
penalty , each lane*(Note15)

TDP30

dB
2.0dB

Difference in launch power
between any two lanes (OMA)

4dB

Optical Return Loss Tolerance

20dB

Transmitter reflectance*(Note7)-26

Extinction Ratio

ER

4.5

Transmitter eye mask
definition {X1, X2, X3, Y1, Y2,Y3}*(Note16)dB
G.959.1 Compliant

ReceiverSignaling Speed per Lane

BRAVE

Data Rate Variation

27.95
-20

Gbps
+20ppmReceiver overload per Lane

Psat

-3

Lane_0 Center Wavelength

λC01294.531295.56

1296.59nm

Lane_1 Center Wavelength

λC11299.021300.051301.09nm

Lane_2 Center Wavelength

λC21303.54

1304.581305.63nm

Lane_3 Center Wavelength

λC31308.09

1309.141310.19

nmAverage Receive Power perLane*(Note9)

Rx_pow

-20.5

-3.5

dBm

Damage threshold perlane(min) *(Note10)

Pdamage-2.5

dBm

Data Controls Inc.
Page 4 of 8dBm

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QSFP28 Series Preliminary
Equivalent Sensitivity
per Lane*(Note17)

Rx_sens-18

dBm

Receiver Reflectance

ORL

-26

dB

LOS Assert

LOSA

LOS De-Assert

LOSD

LOS Hysteresis

-35

dBm
-25

dBm

0.5

dB

Note4: Average launch power, each lane (min) is informative and not the principal indicator of signal strength. Atransmitter with launch power below this value cannot be compliant; however, a value above this does not ensurecompliance.
Note5: Even if the TDP < 1.0dB, the OMA (min) must exceed 0.5 dBm.
Note6: Measured at 103Gbps & BER = 5*10-5.
Note7: Transmitter reflectance is defined looking into the transmitter.
Note8: Vertical eye closure penalty, stressed eye J2 Jitter, stressed eye J4 Jitter, and SRS eye mask definition
are test conditions for measuring stressed receiver sensitivity. They are not characteristics of the receiver.
Note9: Average receive power, each lane (min) is informative and not the principal indicator of signal strength. A
received power below this value cannot be compliant; however, a value above this does not ensure compliance.
Note10: The receiver shall be able to tolerate, without damage, continuous exposure to an optical signal having
this average power level.
Note11: Receiver sensitivity (OMA), each lane (max) at 5*10-5 BER is a normative specification.
Note12: Measured with conformance test signal at TP3 for BER = 5*10-5.
Note13: Measured at 103Gbps & pre FEC BER = 1*10-12.
Note14: Measured with conformance test signal at TP3 for BER = 1*10-12.
Note15: Measured at 112Gbps & pre FEC BER = 1.8*10-4.
Note16: Filtered, measured with a PRBS 231-1 test pattern @27.95Gbps.
Note17: Specified at a pre FEC BER of 1.8*10-4.

QSFP28 Transceiver Electrical Pad Layout

Data Controls Inc.
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QSFP28 Series Preliminary
Pin Arrangement and Definition
PinLogic

1

SymbolDescription

Plug
Sequence

Notes
1GNDGround

12

CML-I

Tx2n

Transmitter Inverted Data Input

33CML-ITx2p

Transmitter Non-Inverted Data Input

3GNDGround

145CML-I

Tx4n

Transmitter Inverted Data Input

36CML-I

Tx4p

Transmitter Non-Inverted Data Input

3GND

Ground178LVTTL-I

ModSelL

Module Select39

LVTTL-I

ResetL

Module Reset

3VccRx+3.3V Power Supply Receiver

21011

LVCMOS- I/O

SCL

2-wire serial interface clock

312

LVCMOS- I/O

SDA

2-wire serial interface data

3GND

Ground11314CML-O

Rx3p

Receiver Non-Inverted Data Output

315CML-O

Rx3n

Receiver Inverted Data Output

3GNDGround1161121117CML-O

Rx1p

Receiver Non-Inverted Data Output

318CML-O

Rx1n

Receiver Inverted Data Output

319

GND

Ground1120

GND

Ground1121CML-O

Rx2n

Receiver Inverted Data Output

322CML-O

Rx2p

Receiver Non-Inverted Data Output

3GND

Ground

12324

CML-O

Rx4n

Receiver Inverted Data Output

325

CML-O

Rx4p

Receiver Non-Inverted Data Output

3GND

Ground126

1127

LVTTL-O

ModPrsL

Module Present

328

LVTTL-OIntLInterrupt

329

VccTx+3.3V Power supply transmitter

2230

Vcc1+3.3V Power supply

22LPModeLow Power Mode

3GNDGround131

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

Tx1n

Transmitter Inverted Data Input

3GND

Ground138

Data Controls Inc.
Page 6 of 8111V1.c

QSFP28 Series Preliminary
1: GND is the symbol for signal and supply (power) common for the QSFP28 module. All are common
within the QSFP28 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. Vcc Rx Vcc1 and Vcc Tx may be internally connected within the QSFP28 Module in any
combination. The connector pins are each rated for a maximum current of 1000mA.

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

RevisionHistory

Release Date

V1.aPreliminary

Jan 03, 2019

V1.b

Update Optical Characteristics

Mar 26, 2019

V1.c

Update Optical Characteristics

May 22, 2019

Data Controls Inc.
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QSFP28 Series Preliminary
Notice:Data Controls Inc. 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/orperformance. Applications that are described herein for any of the optical link products are forillustrative purposes only. Data Controls Inc. makes no representation or warranty that suchapplications will be suitable for the specified use without further testing or modification.

Contact:8F, Fukashiro Bldg. 1-20-4 Yanagibashi, Taito-ku, Tokyo Japan 111-0052
TEL: +81 3 5829 5805 FAX:+81 3 5829 5806
E-mail:info@dci.jp https://www.dci.jp

Data Controls Inc.
Page 8 of 8V1.c