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100G SR4

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100G Base QSFP28 SR4 Optical Transceiver Module

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7. All contents are Copyright © 1996 - 20 1 9 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 7 of 10 Document Number: 95 - 0245 - V1. 1 100G QSFP28 SR4, 100m Transceiver WST - QS28 - SR4 - C Recommended Host Board S chematic

9. All contents are Copyright © 1996 - 20 1 9 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 9 of 10 Document Number: 95 - 0245 - V1. 1 100G QSFP28 SR4, 100m Transceiver WST - QS28 - SR4 - C Mechanical Design Diagram Product shall be of design, construction and physical dimensions specified on applicable product drawing . Unit: mm Laser Safety All transceiver are all Class 1 products per CDRH 21 CFR 1040 and Laser Notice 50 standards. They must be operated under specified operating condition.

6. All contents are Copyright © 1996 - 20 1 9 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 6 of 10 Document Number: 95 - 0245 - V1. 1 100G QSFP28 SR4, 100m Transceiver WST - QS28 - SR4 - C 36 TX1p Transmitter Non - Inverted Data Input 37 TX1n Transmitter Inverted Data Input 38 GND Ground Note1 Notes: 1. GND is the symbol for signal and supply (power) common for the module. All are common within the module and all module voltages are reference to this potential unless otherwise noted. Module circuit ground is isolated from module chassis ground within the module. 2. Open collector should be pulled up with 4.7~10K ohms on the host board to a voltage between 3.15V and 3.6V.

1. Data Sheet All contents are Copyright © 1996 - 20 19 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 1 of 10 100G QSFP28 SR4, 100m Transceiver P/N: WST - Q S28 - SR4 - C G eneral P roduct C haracteristics Parameter Value Unit Comments Module Form Factor QSFP28 As defined by SFF - 8661 Module Form Factor Number of Lanes 4 TX and 4 RX Maximum Aggregate Data Rate 103.125 Gb/s Maximum Data Rate per Lane 25.78125 Gb/s Protocols Supported InfiniBand, Ethernet Electrical Interface and Pin - out 38 - pin edge connector Pin - out as defined by SFF - 8679 Standard Optical Cable Type Multimode OM3 (<70m) Multimode OM4 (≤100m) Maximum Power Consumption 1.8 Watts Varies with output voltage swing and pre - emphasis settings Management Interface Serial, I 2 C - based, 400 kHz maximum frequency As defined by SFF - 8636 BER <10 - 12 PRBS:31, input signal swing 800mV differential Features:  Hot Pluggable QSFP28 form factor  Supports 25.78125Gb/s per channel  Up to 70m transmission with OM3 multi - mode fiber  Up to 100m transmission with OM4 multi - mode fiber  Standard M PO pluggable connector  Low Power Dissipation, Max 1.8W  Operating Case Temperature: 0 °C ~70 °C  SFF - 8636 Management Interface  SFF - 8661: Pluggable Module  SFF - 8679: General Electrical  IEEE 802.3bm: Physical Layer Specifications and Management Parameters  ROHS - 6: Environment Safety Applications:  Ethernet for 100GBASE - SR4  InfiniBand EDR, FDR, & QDR  Proprietary Interconnections

2. All contents are Copyright © 1996 - 20 1 9 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 2 of 10 Document Number: 95 - 0245 - V1. 1 100G QSFP28 SR4, 100m Transceiver WST - QS28 - SR4 - C Abs o lute Maximum Ratings Exceeding the limits below may damage the active optical cable permanently. Parameter Symbol Min. Typ. Max. Unit. Ref. Maximum Supply Voltage V cc - 0.5 3.6 V Storage Temperature T sto - 40 85 °C Case Operating Temperature T op 0 70 °C Relative Humidity RH 0 85 % Note1 Notes: 1. Non - condensing. P arameters Parameter Symbol Min. Typ. Max. Unit. Ref. Supply Voltage V cc 3.14 3.46 V Power Consumption P Con 1.8 W Bit Rate BR 25.78125 Gb/s ① Bit Error Ratio BER 10 - 12 ② Center wavelength λ c 840 860 nm ③ Number of Lanes 4 Management Interface Serial, I2C - based, maximum frequency 400 kHz ④ Logic Input Voltage High V ih 2 Vcc+0.3 V Logic Input Voltage Low V il - 0.3 0.8 V 1. Single lane 2. PRBS= 2 31 - 1 @ 25.78125Gb/s 3. As defined by IEEE Std. 802.3bm - 2015 4. As defined by SFF - 8636

8. All contents are Copyright © 1996 - 20 1 9 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 8 of 10 Document Number: 95 - 0245 - V1. 1 100G QSFP28 SR4, 100m Transceiver WST - QS28 - SR4 - C Memory Map 2 - Wire Serial Address 1010000x Lower Page 00h 0 Identifier 1 - 2 Status 3 - 2 1 Interrupt Flags 22 - 23 Free Side Device Monitors 34 - 81 Channel Monitors 82 - 85 Reserved 86 - 98 Control 99 Reserved 1 00 - 104 Hardware Interrupt Pin Masks 1 0 5 - Vendor Specific 1 0 6 107 Reserved 1 0 8 - Free Side Device Properties 1 1 0 1 1 1 - Assigned for use by PCI Express 1 1 2 113 Free Side Device Properties 1 1 4 - Reserved 1 1 8 1 1 9 - Password Change Entry Area (Optional) 1 2 2 1 2 3 - Password Entry Area (Optional) 1 2 6 127 Page Select Byte Optional Optional Optional Upper Page 00h Page 01h Page 02h Page 03h 128 Identifier 128 CC_APPS 128 - 255 User EEPROM data 128 - 175 Free Side Device Thresholds 129 - 191 Base ID Fields 129 AST Table Length (TL) 130 - 131 Application Code Entry 0 132 - 133 Application Code Entry 1 134 - 253 other entries 176 - 223 Channel Thresholds 192 - 223 Extended ID 224 - 255 Vendor Specific ID 224 TX EQ & RX Emphasis Magnitude ID 225 RX output amplitude indicators 226 - 241 Channel Monitor Masks 254 - 255 Application Code Entry TL 252 - 255 Reserved

4. All contents are Copyright © 1996 - 20 1 9 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 4 of 10 Document Number: 95 - 0245 - V1. 1 100G QSFP28 SR4, 100m Transceiver WST - QS28 - SR4 - C Optical Characteristics Parameter Symbol Min. Typ. Max. Unit. Ref. Transmitter Signaling Speed per Lane 25.78125 ± 100ppm Gb/s Lane wavelengths (Range) λ 840 860 nm RMS Spectral Width △ λ 0.6 nm Average launch power, each lane P avg - 8.4 2.4 dBm Transmit OMA per Lane OMA - 6.4 3 dBm Transmitter and dispersion eye closure (TDEC), each lane TDEC 4.3 dBm Launch power in OMA minus TDEC – 7.3 dBm Extinction ratio ER 2 dB Average launch power of OFF transmitter, each lane P off - 30 dBm Encircled flux ≥ 86% at 19μm ≤ 30% at 4.5μm Transmitter eye mask definition {0.3, 0.38, 0.45, 0.35, 0.41, 0.50} ① Receiver Signaling Speed per Lane 25.78125 ± 100ppm Gb/s Lane wavelengths (Range) λ 840 860 nm Damage threshold +3.4 dBm Average power at receiver input, each lane - 10.3 2.4 dBm ② Receive Power, each lane (OMA) 3 dBm Receiver Reflectance - 12 dB Receiver sensitivity in OMA - 7.2 dBm ③ Notes: 1. Hit ratio = 5x10 - 5 per sample. 2. Average receive power, each lane (min) is informative and not the principal indicator of signal strength. 3. Measured with conformance test signal for BER=5x10 - 5

10. Page 10 of 10 Document Number: 95 - 0245 - V1. 1 100G QSFP28 SR4, 100m Transceiver WST - QS28 - SR4 - C Ordering Information Part No Specification Package Data rate per Lane Laser Optical Power Detector Max. Receive Sensitivity (OMA) Temp Reach Other Application code WST - Q S 2 8 - SR4 - C QSFP 28 25.78125 Gb p s each Channel 850nm VCSEL - 8.4 ~ + 2.4 each Channel PIN - 7 .2 dBm each Channel 0~70 °C 70m via OM3 and 100m via OM4 DDM RoHS 100GBASE - SR4 Ethernet Modification History Revision Date Description Originator Review Approved V 1 5 - Jul - 20 1 9 New Issue Ivy Chen Wayne Liao Wayne Liao V 1 . 1 12 - Jul - 2019 U pdate con nector type Ivy Chen Wayne Liao Wayne Liao All specification data are accurate on the date of publication for product comparisons and ordering information. WaveSp litter Technologies, Inc. reserves the right to change specifications without notice. U.S. Branch 2080 Rancho Higuera Ct. Fremont, CA 9 45 3 9, USA Tel: 510 - 651 - 7800 Fax: 510 - 651 - 7822 Taipei Headquarters 16F - 5, No. 75, Sec. 1, Xintai 5th Rd., Xizhi Dist. , New Taipei C ity 221 01 , Taiwan Tel: +886 - 2 - 2 698 - 7208 Fax: +886 - 2 - 2 698 - 7210 ShenZhen Branch 5F, 7th Building, Tian'an Industrial Zone, NanShan Area, ShenZhen China Tel: +86 - 755 - 86265980; Fax: +86 - 755 - 26642741

5. All contents are Copyright © 1996 - 20 1 9 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 5 of 10 Document Number: 95 - 0245 - V1. 1 100G QSFP28 SR4, 100m Transceiver WST - QS28 - SR4 - C P in D escriptions PIN Symbol Description Ref. 1 GND Ground 2 TX2n Transmitter Inverted Data Input 3 TX2p Transmitter Non - Inverted Data Input 4 GND Ground Note1 5 TX4n Transmitter Inverted Data Input 6 TX4p Transmitter Non - Inverted Data Input 7 GND Ground Note1 8 ModSelL Module Select Note2 9 ResetL Module Reset Note2 10 V cc RX +3.3V Receiver Power Supply Receiver 11 SCL 2 - wire Serial Interface Clock Note2 12 SDA 2 - wire Serial Interface Data Note2 13 GND Ground Note1 14 RX3p Receiver Non - Inverted Data Output 15 RX3n Receiver Inverted Data Output 16 GND Ground Note1 17 RX1p Receiver Non - Inverted Data Output 18 RX1n Receiver Inverted Data Output 19 GND Ground Note1 20 GND Ground Note1 21 RX2n Receiver Inverted Data Output 22 RX2p Receiver Non - Inverted Data Output 23 GND Ground Note1 24 RX4n Receiver Inverted Data Output 25 RX4p Receiver Non - Inverted Data Output 26 GND Ground Note1 27 ModPrsL Module Present, internal pulled down to GND 28 IntL Interrupt output, should be pulled up on host board 29 Vcc TX +3.3V Transmitter Power Supply 30 Vcc1 +3.3V Power Supply 31 LPMode Low Power Mode Note 2 32 GND Ground 33 TX3p Transmitter Non - Inverted Data Input 34 TX3n Transmitter Inverted Data Input 35 GND Ground

3. All contents are Copyright © 1996 - 20 1 9 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 3 of 10 Document Number: 95 - 0245 - V1. 1 100G QSFP28 SR4, 100m Transceiver WST - QS28 - SR4 - C E lectrical C haracteristics Parameter Symbol Min. Typ. Max. Unit. Ref. Transceiver Power Supply Current I cc 600 mA Transceiver Power o n Initialization Time T init 2000 ms Transmitter at TP1a Differential Data Input Voltage Peak to Peak Swing V in,pp 900 mV Common Mode Noise RMS 17.5 mV Differential Input Return Loss SDD22 Per OIF CEI - 28G - VSR and CAUI - 4 Requirements dB Common Mode to Differential Conversion and Differential to Common Mode Conversion SDD22 SCD22 dB Common Mode Return Loss SCC22 dB Transition Time, 20% to 80% T r , T f 10 ps Common Mode Voltage V cm - 0.3 2.8 V Eye Width @ 1E - 15 Probability EW15 0.46 UI Eye Height @ 1E - 15 Probability EH15 94 mv Receiver at TP4 Differential Data Output Voltage Peak to Peak Swing V opp 300 900 mV Differential Output Impedance Zos 90 100 110 Ohms Common Mode Voltage V cm - 0.35 2.85 V Common Mode Noise RMS 17.5 mV Differential Output Return Loss SDD22 Per OIF CEI - 28G - VSR and CAUI - 4 Requirements dB Common Mode to Differential Conversion and Differential to Common Mode Conversion SDD22 SCD22 Common Mode Return Loss SCC22 - 2 dB Transition Time, 20% to 80% T r , T f 10 ps Eye Width @ 1E - 15 Probability EW15 0.57 UI Eye Height @ 1E - 15 Probability EH15 228 mV

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