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WST-QS28-CM4c-D

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100-Gbps QSFP28 CWDM4 OCP type,500m(15-55℃) Optical Transceiver Module

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5. All contents are Copyright © 1996 - 20 1 8 Wave S plitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 5 of 6 Document Number: 95 - 0186 - V1. 1 1 00 - Gbps QSFP28 CWDM4 OCP type, 500m (15 - 55 °C ) Optical Transceiver WST - QS28 - CM4 c - D Pin Logic Symbol Name/Description Note 29 VccTx +3.3 V Power Supply transmitter 30 Vcc1 +3.3 V Power Supply 31 LVTTL - I LPMode Low Power Mode 32 GND Ground 33 CML - I Tx3p Transmitter Non - Inverted Data Input Pin Logic Symbol Name/Description Note 34 CML - I Tx3n Transmitter Inverted Data Output 35 GND Ground 36 CML - I Tx1p Transmitter Non - Inverted Data Input 37 CML - I Tx1n Transmitter Inverted Data Output 38 GND Ground Outline Dimensions Unit: mm

3. All contents are Copyright © 1996 - 20 1 8 Wave S plitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 3 of 6 Document Number: 95 - 0186 - V1. 1 1 00 - Gbps QSFP28 CWDM4 OCP type, 500m (15 - 55 °C ) Optical Transceiver WST - QS28 - CM4 c - D RECEIVER CHARACTERISTICS (T=25°C, unless noted) Parameter Symbol Conditions Min. Typ. Max. Unit Signaling rate, each lane (range) GBb 25.78125 GBb Center Wavelength λ0 1264.5 1277.5 nm λ1 1284.5 1297.5 nm λ2 1304.5 1317.5 nm λ3 1324.5 1337.5 nm Damage threshold 3.5 dBm Average power at receiver input, each lane - 11.5 2.5 dBm Receive power, each lane (OMA) 2.5 dBm Receiver reflectance - 26 dB Receiver sensitivity (OMA) S OMA - 10 dBm LOS Assert LOS A TBD dBm LOS De - Assert LOS D TBD dBm LOS Hysteresis TBD dB Pin Assignment

6. Page 6 of 6 Document Number: 95 - 0186 - V1. 1 1 00 - Gbps QSFP28 CWDM4 OCP type, 500m (15 - 55 °C ) Optical Transceiver WST - QS28 - CM4 c - D O rder I nformation Part No Specification Package Data rate Laser Optical Power (OMA) Detector Sensitivity Temp Reach Other Application code WST - QS28 - CM4 c - D QSFP28 25.78125 Gb p s each Channel 4 - ch CWDM DML - 4.0~2.5 dBm each Channel PIN - 10dBm each Channel 15 - 55 o C 500 m DDM RoHS 100G Ethernet Modification History Revision Date Description Originator Review Approved V1.0 26 - Feb - 201 8 New Issue I vy Chen Wayne Liao Wayne Liao V1.1 11 - May - 2018 P/N change I vy Chen Wayne Liao Wayne Liao All specification data are accurate on the date of publication for product comparisons and ordering information. WaveSplitter 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 610#, 6F, No.204 Building, 2nd Industrial zone Nanyou, Nanshan district, Shenzhen, Guangdong China 518054 Tel: +86 - 755 - 86265980 Fax: +86 - 755 - 26642741

1. Data Sheet All contents are Copyright © 1996 - 20 1 8 Wave S plitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 1 of 6 ABSOLUTE MAXIMUM RATINGS Parameter Symbol Conditions Min. Max. Unit Storage Temperature T Storage - 40 +85 ° C Relative Humidity RH 0 +85 % Recommended Operating Conditions (T=25°C, unless noted) Parameter Symbol Conditions Min. Typ. Max. Unit Case Temperature T C 15 55 ° C Power Supply Voltage V CC 3.15 3.3 3.45 V Signaling Rate each Channel 25.78125 Gbps Supply Noise Rejection --- --- 100 mV Receiver Differential Data Output --- 100 Ohm Operating Distance D --- --- 2 km A pplication:  Data Center Backbone  Ethernet Switches  High - speed Servers  High - performance Computing Clusters  SAN, Routers, Hubs, Load Balancer Features:  Compliant with 100G CWDM4 MSA Specification  Uncooled 4x25Gb/s CWDM transmitter  Wide Operating Temperature( 15 °C~ 55 °C)  Maximum link length of 500 m via Single Mode Fiber (SMF)

2. All contents are Copyright © 1996 - 20 1 8 Wave S plitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 2 of 6 Document Number: 95 - 0186 - V1. 1 1 00 - Gbps QSFP28 CWDM4 OCP type, 500m (15 - 55 °C ) Optical Transceiver WST - QS28 - CM4 c - D Electrical Characteristics (T=25 ° C, unless noted) Parameter Symbol Conditions Min. Typ. Max. Unit Power Consumption 3.5 W Supply Current I cc 1200 mA TRANSMITTER CHARACTERISTICS (T=25°C, unless noted) Parameter Symbol Conditions Min. Typ. Max. Unit Signaling rate, each lane (range) GBb 25.78125 GBb Center Wavelength λ0 1264.5 1277.5 nm λ1 1284.5 1297.5 nm λ2 1304.5 1317.5 nm λ3 1324.5 1337.5 nm Side - mode suppression ratio SMSR 30 dB Total average launch power 8.5 dBm Average launch power, each lane Pf - 6.5 2.5 dBm Optical Modulation Amplitude (OMA), each lane TxOMA - 4 2.5 dBm Transmitter and Dispersion Penalty TDP 3 dB Launch power in OMA minus TDP, each lane Tx - TDP - 5 dBm Average launch power of OFF transmitter, each lane - 30 dBm Extinction ratio ER 3.5 dB Optical return loss tolerance 20 dB Transmitter reflectance - 12 dB

4. All contents are Copyright © 1996 - 20 1 8 Wave S plitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 4 of 6 Document Number: 95 - 0186 - V1. 1 1 00 - Gbps QSFP28 CWDM4 OCP type, 500m (15 - 55 °C ) Optical Transceiver WST - QS28 - CM4 c - D Pin Description Pin Logic Symbol Name/Description Note 1 GND Ground 2 CML - I Tx2n Transmitter Inverted Data Input 3 CML - I Tx2p Transmitter Non - Inverted Data output 4 GND Ground 5 CML - I Tx4n Transmitter Inverted Data Input 6 CML - I Tx4p Transmitter Non - Inverted Data output 7 GND Ground 8 LVTTL - I ModSelL Module Select 9 LVTTL - I ResetL Module Reset 10 VccRx ﹢ 3.3V Power Supply Receiver 11 LVCMOS - I/O SCL 2 - Wire Serial Interface Clock 12 LVCMOS - I/O SDA 2 - Wire Serial Interface Data 13 GND Ground 14 CML - O Rx3p Receiver Non - Inverted Data Output 15 CML - O Rx3n Receiver Inverted Data Output 16 GND Ground 17 CML - O Rx1p Receiver Non - Inverted Data Output 18 CML - O Rx1n Receiver Inverted Data Output 19 GND Ground 20 GND Ground 21 CML - O Rx2n Receiver Inverted Data Output 22 CML - O Rx2p Receiver Non - Inverted Data Output 23 GND Ground 24 CML - O Rx4n Receiver Inverted Data Output 25 CML - O Rx4p Receiver Non - Inverted Data Output 26 GND Ground 27 LVTTL - O ModPrsL Module Present 28 LVTTL - O IntL Interrupt

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