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1000Base BIDI 10km

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1.25Gb/s 1310nm/1550nm 10km DDMI Bi-directional Transceiver 40Km

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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 - 0302 - V1.0 1.25G BX 1310nm/1550nm 10 km Optical Transceiver WST - SxxLCx1 - D Mechanical Drawing SC BiDi : LC BiDi Unit: mm

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 - 0302 - V1.0 1.25G BX 1310nm/1550nm 10 km Optical Transceiver WST - SxxLCx1 - D 7. VccR and VccT are the receiver and transmitter power suppli es. They are defined as 3.3V  5% at the SFP connector pin. Maximum supply current is 300mA. Recommended host board power supply filtering is shown below. Inductors with DC resistance of less than 1Ω should be used in order to maintain the required voltage at the SFP input pin with 3.3V supply voltage. When the recommended supply filtering network is used, hot plugging of the SFP transceiver module will result in an inrush current of no more than 30 mA greater than the steady state value. VccR and VccT may be internally connected within the SFP transceiver module. 8. TD - /+: These are the differential transmitter inputs. They are AC - coupled, differential lines with 100Ω differential termination inside the module. The AC coupling is done inside the module and is thus not required on the host board. Recommended Host Board Supply Filtering Network Example SFP Host Board Schematic

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 Description The products are compliant with the Small Form - Factor Pluggable (SFP) Multi - Source Agreement (MSA) and SFF - 8472. The Digital Diagnostic Monitoring functions as described in SFF - 8472 are provided via an I 2 C serial interface. The transceiver block diagram is shown as below Fig 1. Fig 1 Transceiver Block Diagram Features: ◼ BiDi SC or LC SFP Single Mode Transceiver ◼ Compliant with SFP MSA and SFF - 8472 with LC receptacle ◼ 1310nm FP Laser for transmitter and 1550nm PIN+TIA for receiver ◼ 1550nm DFB Laser for transmitter and 1310nm PIN+TIA for receiver ◼ Hot - pluggable ◼ Single +3.3 Power Supply ◼ Complies with Telcordia (Bellcore) GR - 468 - CORE ◼ Typical data rate 1.25Gbps ◼ Maximal reach 10km ◼ RoHS - 6 compliance Applications: ◼ Gigabit Ethernet ◼ Fiber Channel ◼ Routers, Hubs or Repeaters

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 - 0302 - V1.0 1.25G BX 1310nm/1550nm 10 km Optical Transceiver WST - SxxLCx1 - D The module provides digital diagnostic information of its operating conditions and status, including transmitting power, laser bias, receiver input optical power, module temperature, and supply voltage. Calibration and alarm/warning threshold data are written and stored in internal memory (EEPROM). The memory map is compatible with SFF - 8472, as shown in Fig. 2. The diagnostic data are raw A/D values and must be converted to real world units using calibration constants stored in EEPROM locations 56 – 95 in A2h. Fig 2 EEPROM Information Abs o lute Maximum Ratings Parameter Symbol Min. Max. Unit Note Storage Temperature Tst - 40 +85 °C Operating Case Temperature Tc 0 70 °C WST - SxxLC C 1 - D - 40 85 °C WST - SxxLC I 1 - D Input Voltage - GND Vcc V Power Supply Voltage Vcc - Vee - 0.5 +3.6 V 2 wire address 1010000X (A0h) 2 wire address 1010001X (A2h) Alarm and Warning Thresholds (56 bytes) Cal Constants (40 bytes) Real Time Diagnostic Interface (24 bytes) Vendor Specific (8 bytes ) Serial ID Defined by SFP MSA (96 bytes) Vendor Specific (32 bytes) 0 95 127 0 55 95 119 127 User Writable EEPROM (120 bytes) Vendor Specific (8 bytes ) 247 255 Reserved ( 128 bytes) 255

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 - 0302 - V1.0 1.25G BX 1310nm/1550nm 10 km Optical Transceiver WST - SxxLCx1 - D 12 RD - Inv. Receiver Data Out 3 6 13 RD+ Receiver Data Out 3 6 14 VeeR Receiver Ground 1 5 15 VccR Receiver Power Supply 2 7, 3.3V  5% 16 VccT Transmitter Power Supply 2 7, 3.3V  5% 17 VeeT Transmitter Ground 1 5 18 TD+ Transmitter Data In 3 8 19 TD - Inv.Transmitter Data In 3 8 20 VeeT Transmitter Ground 1 5 Notes: 1. TX Fault is an open collector/drain output, which should be pulled up with a 4.7K – 10KΩ resistor on the host board. Pull up voltage between 2.0V and VccT, R+0.3V. When high, output indicates a laser fault of some kind. Low indicates normal operation. In the low state, the output will be pulled to < 0.8V. 2. TX disable is an input that is used to shut down the transmitter optical output. It is pulled up within the module with a 4.7 – 10 KΩ resistor. Its states are: Low (0 – 0.8V): Transmitter on (>0.8, < 2.0V): Undefined High (2.0 – 3.465V): Transmitter Disabled Open: Transmitter Disabled 3. Mod - Def 0,1,2. These are the module definition pins. They should be pulled up with a 4.7K – 10KΩ resistor on the host board. The pull - up voltage shall be V ccT or VccR. Mod - Def 0 is grounded by the module to indicate that the module is present Mod - Def 1 is the clock line of two wire serial interface for serial ID Mod - Def 2 is the data line of two wire serial interface for serial ID 4. LOS (Loss of Signal) is an open collector/drain output, which should be pulled up with a 4.7K – 10KΩ resistor. Pull up voltage between 2.0V and VccT, R+0.3V. When high, this output indicates the received optical power is below the worst - case receiver sensi tivity (as defined by the standard in use). Low indicates normal operation. In the low state, the output will be pulled to < 0.8V. 5. VeeR and VeeT may be internally connected within the SFP module. 6. RD - /+: These are the differential receiver outputs. They are AC coupled 100Ω differential lines which should be terminated with 100Ω (differential) at the user SERDES. The AC coupling is done inside the module and is thus not required on the host board.

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 - 0302 - V1.0 1.25G BX 1310nm/1550nm 10 km Optical Transceiver WST - SxxLCx1 - D LOS Assert Level - - 45 - - dBm - LOS Hysteresis - 0.5 - 5 dB - Receiver Reflectance - - - - 12 dB - Diffrential Data Output Voltage V PP - DIF 370 - 2000 mV - LOS Output Voltage - Low V OL - - 0.8 V LOS Output Voltage - High V OH 2.0 - - V Note: 1. Minimum Sensitivity and saturation levels for a n 8B10B 2 7 - 1 PRBS. BER≤10 - 12 , 1.25 Gpbs, ER= 9 dB Pin Assignment Pin No. Name Function Plug Seq. Notes 1 VeeT Transmitter Ground 1 2 Tx Fault Transmitter Fault Indication 3 1 3 Tx Disable Transmitter Disable 3 2 4 MOD - DEF2 Module Definition 2 3 3 5 MOD - DEF1 Module Definition 1 3 3 6 MOD - DEF0 Module Definition 0 3 3 7 Rate Select NC 3 8 LOS Los Of Signal 3 4 9 VeeR Receiver Ground 1 5 10 VeeR Receiver Ground 1 5 11 VeeR Receiver Ground 1 5

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 - 0302 - V1.0 1.25G BX 1310nm/1550nm 10 km Optical Transceiver WST - SxxLCx1 - D 84 - 91 8 YY MM DD LL YY: Year; MM: Month DD: Date; LL: Lot YY MM DD LL 92 1 DDM Type 0/58/68 No DDM/External/ Internal Calibrated 93 1 Enhanced Option B0 LOS, TX_FAULT and Alarm/warning flags implemented 94 1 SFF - 8472 Compliance 02 SFF - 8472 Rev10.3 95 1 CC EXT - Check sum of bytes 64 - 94 96 - 255 160 Vendor spec Alarm and Warning Thresholds (Serial ID A2H) Parameter (Unit) C Temp ( °C ) I Temp ( °C ) Voltage (V) Bias (mA) TX Power (dBm) RX Power (dBm) High Alarm 100 100 3.6 90 - 3 - 3 Low Alarm - 10 - 40 3 0 - 9 - 23 High Warning 95 95 3.5 70 - 4 - 4 Low Warning 0 - 30 3.1 0 - 8 - 22 Digital Diagnostic Monitor Accuracy Parameter Unit Accuracy Range Calibration Tx Optical Power dB ±3 Po: - Pomin~Pomax dBm, Recommended operation conditions External/Internal Rx Optical Power dB ±3 Pi: Ps~Pr dBm, Recommended operation conditions External/Internal Bias Current % ±10 Id: 1 - 100mA, Recommended operating conditions External/Internal Power Supply Voltage % ±3 Recommended operating conditions External/Internal Internal Temperature °C ±3 Recommended operating conditions External/Internal

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 - 0302 - V1.0 1.25G BX 1310nm/1550nm 10 km Optical Transceiver WST - SxxLCx1 - D EEPROM Serial ID Memory Contents Addr. (decimal) Field Size (Bytes) Name of Field Content (Hex) Description 0 1 Identifier 03 SFP 1 1 Ext. Identifier 04 MOD4 2 1 Connector 01/07 SC/LC 3 - 10 8 Transceiver 00 00 00 xx 00 00 00 00 Transceiver Code 11 1 Encoding 01 8B10B 12 1 BR, nominal 0D 1.25Gbps 13 1 Reserved 00 - 14 1 Length (9um) - km 0A 10km 15 1 Length (9um) 64 10km 16 1 Length (50um) 00 - 17 1 Length (62.5um) 00 - 18 1 Length (copper) 00 - 19 1 Reserved 00 - 20 - 35 16 Vendor name 57 41 56 45 53 50 4C 49 54 54 45 52 20 20 20 20 WAVESPLITTER 36 1 Reserved 00 - 37 - 39 3 Vendor OUI 00 0 F 0 E - 40 - 55 16 Vendor PN 57 53 54 2D 53 xx xx 4C 43 xx 3 1 2D 44 20 20 20 ‘ WST - SxxLCx1 - D ’ (ASCII) 56 - 59 4 Vendor rev 30 30 3 1 30 “00 1 0” (ASCII) 60 - 61 2 Wavelength 05 1E/06 0E 1310/1550 62 1 Reserved 00 - 63 1 CC BASE - Check sum of bytes 0 - 62 64 1 Reserved 00 65 1 Options 1A 66 1 BR, max 00 - 67 1 BR, min 00 - 68 - 83 16 Vendor SN 43 31 YY MM 42 39 30 30 30 31 20 20 20 20 20 20 “C1YMB90001” ASCII

10. Page 10 of 10 Document Number: 95 - 0302 - V1.0 1.25G BX 1310nm/1550nm 10 km Optical Transceiver WST - SxxLCx1 - D Ordering Information Part No Specification Package Data rate per Lane Laser Optical Power Detector Max. Receive Sensitivity (OMA) Temp Reach Other Application code WST - S U3 LC C 1 - D SFP 1.25 Gb p s 1310 nm FP - 9 ~ - 3 each Channel PIN - 23 dBm each Channel 0~ 70 °C 10 k m DDM RoHS Gigabit Ethernet WST - S D5 LC C 1 - D SFP 1.25 Gb p s 1550 nm DFB - 9 ~ - 3 each Channel PIN - 23 dBm each Channel 0~70 °C 10 k m DDM RoHS Gigabit Ethernet WST - S U3 LC I1 - D SFP 1.25 Gb p s 1310 nm FP - 9 ~ - 3 each Channel PIN - 23 dBm each Channel - 40 ~ 85 °C 10 k m DDM RoHS Gigabit Ethernet WST - S D5 LC I1 - D SFP 1.25 Gb p s 1550 nm DFB - 9 ~ - 3 each Channel PIN - 23 dBm each Channel - 40 ~ 85 °C 10 k m DDM RoHS Gigabit Ethernet Modification History Revision Date Description Originator Review Approved V 1 .0 30 - Oct - 20 1 9 New Issue 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 610#, 6F, No.204 Building, 2nd Industrial zone Nanyou, Nanshan district, Shenzhen, Guangdong China 518054 Tel: +86 - 755 - 86265980 Fax: +86 - 755 - 26642741

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 - 0302 - V1.0 1.25G BX 1310nm/1550nm 10 km Optical Transceiver WST - SxxLCx1 - D Re co mmended O perating Co nditi o ns Parameter Symbol Min. Typical Max. Unit Note Power Supply Voltage Vcc 3.135 3.3 3.465 V - Operating Case Temperature Tc 0 - 70 °C WST - SxxLC C 1 - D - 40 - 85 °C WST - SxxLC I 1 - D Data Rate DR - 1.25 - Gbps - Total Supply Current - - - 300 mA - Electrical - Optical Specification Parameter Symbol Min. Typ. Max. Unit Note Transmitter Optical Central Wavelength  1275 1310 1350 nm WST - S U3 LC x 1 - D 1500 1 55 0 1580 WST - S D5 LC x 1 - D Optical Spectral Width (RMS) 1260nm   - - 2.09 nm WST - S U3 LC x 1 - D 1270nm - - 2.52 1280nm - - 3.13 1286nm - - 3.5 1343nm - - 1350nm - - 3.06 1360nm - - 2.58 Optical Spectral Width ( - 20dB )   - - 1 nm WST - S D5 LC x 1 - D Side Mode Suppression Ratio SMSR 30 - - dB WST - S D5 LC x 1 - D Average Optical Output Power Po - 9 - - 3 dBm Extinction Ratio Er 9 - - dB Differential Input Voltage VPP - DIF 500 - 2400 mV - Optical Rise / Fall Time Tr/Tf - - 260 ps - Output Eye Compliant with ITU recommendation IEEE802.3Z Receiver Operate Wavelength - 1480 - 1600 nm WST - S U3 LC x 1 - D 1 260 - 1 360 WST - S D5 LC x 1 - D Sensitivity Pr - - - 23 dBm Saturation Ps - 3 - - dBm 1 LOS De - assert Level - - - - 23 dBm

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