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1000Base BIDI 20km

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1.25G BX 1490nm DFB 20km Transceiver modules (With DDM Function

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10. All contents are Copyright © 1996 - 20 1 9 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 10 of 11 Document Number: 95 - 021 9 - V1.0 1.25G BX 1490nm DFB 20km Transceiver modules (With DDM Function) WST - S D SCI2 - D6CH Mechanical Dimensio ns Figure 3 . Mechanical Drawing ( in mm) Notes: the drawing is subject to change with out fu rther notice .

4. All contents are Copyright © 1996 - 20 1 9 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 4 of 11 Document Number: 95 - 021 9 - V1.0 1.25G BX 1490nm DFB 20km Transceiver modules (With DDM Function) WST - S D SCI2 - D6CH Notes: 1. Also specified to meet curves in FC - PI 13.0 Figures 18 and 19, which allow trade - off between wavelength spectral width. 2. Class 1 Laser Safety per FDA/CDRH and EN (IEC) 60825 regulations. 3. Unfiltered, 20 - 80%. Complies with IEEE 802.3 (Gig. E), FC 1x and 2x eye masks when filtered. 4. Measured with DJ - free data input si gnal. In actual application, output DJ will be the sum of input DJ and DJ. 5. Measured with conformance signals defined in FC - PI 13 .0 specifications. 6. Measured with PRBS 2 7 - 1 at 10 - 12 BER 7. Dispersion limited per FC - PI Rev. 13 Pin Assignment F igure1. Diagram of Host Board Connector Block Pin Numbers and Names

6. All contents are Copyright © 1996 - 20 1 9 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 6 of 11 Document Number: 95 - 021 9 - V1.0 1.25G BX 1490nm DFB 20km Transceiver modules (With DDM Function) WST - S D SCI2 - D6CH SFP Module EEPROM Information and Management The SFP modules implement the 2 - wire se rial communication protocol as defined in the SFP - 8472. The serial ID information of the SFP modules and Digital Diagnostic Monitor parameters can be accessed through the I2C interface at address A0h and A2h. The memory is mapped in Table 1. Detailed ID information (A0h) is listed in Table 2. And the DDM specification at address A2h. For more details of the memory map and byte definitions, please refer to the SFF - 8472, “Digital Diagnostic Monitoring Interface for Optical Transceivers”. The DDM paramete rs have been internally calibrated. Tab le 1 . Digital Diagnostic Memory Map (Specific Data Field Descriptions) Serial ID Memory Contents Data Address Length (Byte) Name of Length Description and Contents Base ID Fields 0 1 Identifier Type of Serial transceiver (03h=SFP) 1 1 Reserved Extended identifier of type serial transceiver (04h) 2 1 Connector Code of optical connector type (07=LC)

9. All contents are Copyright © 1996 - 20 1 9 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 9 of 11 Document Number: 95 - 021 9 - V1.0 1.25G BX 1490nm DFB 20km Transceiver modules (With DDM Function) WST - S D SCI2 - D6CH Recommended Circuit V CCT Laser Driver 10 0 Ω Amplifer EEPROM TX_Disable TX_Fault SFP Module 4K7 to10KΩ Z=50 Ω Z=50 Ω Z=50 Ω RGND RX_LOS V CC (3.3V) 3X 4K7 to10KΩ V CC (3.3V) 10 0 Ω C M L C M L Host Board Z=50 Ω MOD_DEF(0) MOD_DEF(1) MOD_DEF(2) 4K7 to10KΩ Figure 2 . SFP Host Re commended Circuit

8. All contents are Copyright © 1996 - 20 1 9 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 8 of 11 Document Number: 95 - 021 9 - V1.0 1.25G BX 1490nm DFB 20km Transceiver modules (With DDM Function) WST - S D SCI2 - D6CH Digital Diagnostic Monitor Characteristics The following digital diagnostic characteristics are defined over the Recommended Operating Environment unless otherwise specified. It is compliant to SFF8472 Rev10.2 with internal calibration mode. For external calibrat ion mode please contact our sales for more information . Data Address Parameter Accuracy Unit 96 - 97 Transceiver Internal Temperature ±3.0 °C 98 - 99 VCC3 Internal Supply Voltage ± 5 .0 % 100 - 101 Laser Bias Current ± 10 % 102 - 103 Tx Output P ower ± 3.0 dBm 104 - 105 Rx Inpu t Power ± 3.0 dBm Regulatory Compliance WST - SUSCI2 - D6CH complies with international Electromagnetic Compatibility (EMC) and international safety requirements and standards (see details in Table following). Electrostatic Disc harge (ESD) to the Electrical Pins MIL - STD - 883E Method 3015.7 Class 1(>1000 V) Electrostatic Discharge (ESD) to the Single L C Receptacle IEC 61000 - 4 - 2 GR - 1089 - CORE Compatible with standards Electromagnetic Interference (EMI) FCC Part 15 Class B EN55022 C lass B (CISPR 22B) VCCI Class B Compatible with standards Laser Eye Safety FDA 21CFR 1040.10 and 1040.11 EN60950, EN (IEC) 60825 - 1,2 Compatible with Class 1 laser product.

1. Data Sheet All contents are Copyright © 1996 - 20 1 9 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary ww w.wavesplitter.com Page 1 of 11 1.25 G BX 1490nm DFB 20km Transceiver modules (With DDM Function) P/N: WST - S D SCI 2 - D6CH Descriptio n WaveSplitter ’ s WST - S D SCI2 - D6CH Transceivers are a high performance, cost effective module which have a single LC optics interface. They are compatible with the Small Form Factor Pluggable Multi - Sourcing Agreement (MSA) and Digital diagnostics functions are available via the 2 - wire serial bus specified in SFF - 8472. The receiver section uses a PIN receiver and the transmitter uses a 1490 nm DFB laser, up to 14dB link budge ensure this module 1000Base - LX Ethernet 20km application . Ab s o lute Maximum Ratings Parameter Symb ol Min . Typical Max . Unit Storage T emperature T S - 4 0 +85 °C Supply V oltage V CC - 0.5 4 V Relative H umidity RH 0 8 5 % Features: ◼ Up to 1.25Gb/s Data Links ◼ Hot - Pluggable ◼ Single LC connector ◼ Up to 20 km on 9/125μm SMF ◼ 1490nm FP laser transmitter ◼ 1310nm PIN photo - detector ◼ Single +3.3V Power Supply ◼ Monitoring Interface Compliant with SFF - 8472 ◼ Maximum power dissipation <1W ◼ Industrial /Extended/ Commercial operating temperature range: - 40°C to 85°C/ - 5°C to 85°C/ - 0°C to 70°C Version available ◼ RoHS compliant and Lead Free Applications: ◼ 1000Base - LX Ethernet ◼ Metro/Access Networks ◼ 1×Fibre Channel ◼ Other Optical Links

11. Page 11 of 11 Document Number: 95 - 021 9 - V1.0 1.25G BX 1490nm DFB 20km Transceiver modules (With DDM Function) WST - S D SCI2 - D6CH O rderi n g I n f o rmation Part No Specification Package Data rate per Lane Laser Optical Power Detector M ax. Receive Sensitivity (OMA) Temp Reach Other Application code WST - S D SCI2 - D6CH SFP 1 . 25 Gb p s 1490nm DFB - 9 ~ - 3 each C hannel PIN - 23 dBm 0~70 o C 20km DDM RoHS 1000Base - L X Ethernet Modification History Revision Date Description Originator Review A pproved V 1 21 - Feb - 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 orde ring 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, X intai 5th Rd., Xizhi Dist. , New Taipei C ity 221 01 , Taiwan Tel: +886 - 2 - 2 698 - 7208 Fax: +886 - 2 - 2 698 - 7210 ShenZhe n Branch 610#, 6F, No.204 Building, 2nd Industrial zone Nanyou, Nanshan district, Shenzhen, Guangdong China 518054 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 11 Document Number: 95 - 021 9 - V1.0 1.25G BX 1490nm DFB 20km Transceiver modules (With DDM Function) WST - S D SCI2 - D6CH Pin Description Pin No Name Function Plug Seq N o tes 1 VeeT Transmitter Ground 1 1 2 TX Fault Transmitter Fault Indication 3 3 TX Disable Transmitter Disable 3 2 4 MOD - DEF2 Module Definition 2 3 5 MOD - DEF1 Module Definition 1 3 3 6 MOD - DEF0 Module Definition 0 3 3 7 Rate Select Not Connected 3 4 8 LOS Loss of Signal 3 5 9 VeeR Receiver Ground 1 1 10 VeeR Receiver Ground 1 1 11 VeeR Receiver Ground 1 12 RD - Inv. Received Data Out 3 6 13 RD+ Received Data Out 3 6 14 VeeR Receiver Ground 3 1 15 VccR Receiver Power 2 1 16 VccT Transmitter P o wer 2 17 VeeT Transmitter Ground 1 18 TD+ Transmit Data In 3 6 19 TD - Inv. Transmit In 3 6 20 VeeT Transmitter Ground 1 Notes: 1. Circuit ground is internally is olated from chassis ground. 2. Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V. 3. Should be pulled up with 4.7k - 10 kohms on host board to a voltage between 2.0V and 3.6V. MOD _ DEF ( 0) pulls line low to indicate module is plugged in. 4. Rate selec t is not used 5. LOS is open collector output. Should be pulled up with 4.7k – 10 kohms o n host board to a voltage between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal. 6. AC Coupled

7. All contents are Copyright © 1996 - 20 1 9 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 7 of 11 Document Number: 95 - 021 9 - V1.0 1.25G BX 1490nm DFB 20km Transceiver modules (With DDM Function) WST - S D SCI2 - D6CH 3 - 10 8 Transceiver Gigabit Ether net 1000Base - B X 11 1 Encoding 8B10B (01h) 12 1 BR, Nominal Nominal baud rate, unit of 100Mbps 13 1 Reserved (0000h) 14 1 Length (9 um, km ) Link length supported for 9/125um fiber, units of km 15 1 Length (9um) Link length supported for 9/125um fiber, units of 100m 16 1 Length (50um) Link length supported for 50/125um fiber, units of 10m 17 1 Length (62.5um) Link length suppor ted for 62.5/125um fiber, units of 10m 18 1 Length (Copper) Link length supported for copper, units of meters 19 1 Reserved 20 - 35 16 Vendor Name SFP vendor name: 36 1 Reserved 37 - 39 3 Vendor OUI SFP transceiver vendor OUI ID 40 - 55 16 Vendor PN Part Number: “ WST - SDSCI2 - D6CH ” (ASCII) 56 - 59 4 Vendor rev Revision level for part number 60 - 61 2 Wavelength Laser wavelength 62 1 Reserved 63 1 CCID Least significant byte of sum of data in address 0 - 62 Extended ID Fields 64 - 65 2 Option Indicates which optical SFP signals are implemented ( 001Ah = LOS, TX_FAULT, TX_DISABLE all supported) 66 1 BR, max Upper bit rate margin, units of % 67 1 BR, min Lower bit rate margin, units of % 68 - 83 16 Vendor SN Serial number (ASCII) 84 - 91 8 Date code Manufa cturing date cod e 92 1 Diagnostic Type Diagnostics 93 1 Enhanced Options Diagnostics 94 1 SFF - 8472 Diagnostics 95 1 CCEX Check code for the extended ID Fields (addresses 64 to 94) Vendor Specific ID Fields 96 - 127 32 Readable Vendor specific date, rea d only

3. All contents are Copyright © 1996 - 20 1 9 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 3 of 11 Document Number: 95 - 021 9 - V1.0 1.25G BX 1490nm DFB 20km Transceiver modules (With DDM Function) WST - S D SCI2 - D6CH 6. All transceiver speci fications are compliant with a power supply sinusoidal modulation of 20 Hz to 1.5MHz up to specified value applied through the power supply filtering network shown on page 23 of the Small Form - factor Pluggable (SFP) Transceiver Multi - Source Agreement (MSA) , September 14, 2000. 7. Measured with DJ - free data input signal. In actual application, output DJ will be the sum of input DJ and DJ. Optical Parameters (T OP = Tc , VCC = 3.0 to 3.60 Volts) Parameter Symbol Min . Typical Max . Unit Note Transmitter Section: Center Wavelength λ c 1470 1490 151 0 nm 1 Spectral Width ( - 20dB) σ 1 nm Optical Output Power P out - 9 - 3 dBm 2 Optical Rise/Fall Time t r / t f 2 60 ps 3 Extinction Ratio ER 9 dB Deterministic Jitter Contribution TXΔDJ 56.5 ps 4 Total Jitter Co n tribution TXΔTJ 119 ps Eye Mask for Optical Output Compliant with Eye Mask Defined in IEEE 802.3 standard Relative Intensity Noise RIN - 120 dB/Hz Receiver Section: Optical Input Wavelength 1250 1310 1350 nm Optical Input Power P in - 2 3 - 3 d B m 5.6 Receiver Reflectance 1 2 dB Receiver O verload P ol - 3 dBm 5.6 RX S ensitivity Sen - 2 3 d B m 5.6 RX_LOS Assert LOS A - 40 dBm RX_LOS Deassert LOS D - 2 4 dBm RX_LOS Hysteresis LOS H 0.5 dB General Specifications Data Rate BR 1250 Mb/s Bit Error Rate BER 10 - 12 Max. Supported Link Length on 9/125 μm SMF@1.25G LMAX 20 k m 7 Total System Budget LB 14 dB

2. All contents are Copyright © 1996 - 20 1 9 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 2 of 11 Document Number: 95 - 021 9 - V1.0 1.25G BX 1490nm DFB 20km Transceiver modules (With DDM Function) WST - S D SCI2 - D6CH Re co mmended O perating Co nditi o ns Parameter Symbol Min . Typical Max . Unit Case operating T empera ture Industrial T C - 40 85 °C Ex tended - 5 85 °C Commercial 0 +70 °C Supply V oltage V CC 3. 135 3. 465 V Supply Current Icc 300 mA Inrush Current I surge Icc+30 mA Maximum Power P max 1 W E lectrical C haracteristics (T OP = Tc , VCC = 3.0 to 3 .60 Volts) Parameter Symbol Min . Typic al Max . Unit Note Transmitter Section: Input differential impedance R in 90 100 110 Single ended data input swing V i n PP 200 1 200 m Vp - p Transmit Disable Voltage V D Vcc – 1.3 Vcc V 2 Transmit Enable Voltage V EN Vee Vee+ 0.8 V Transmit Disable Assert Time T dessert 10 us Receiver Section: Single ended data output swing V out,pp 300 800 mv 3 Data output rise time t r 150 ps 4 Data output fall time t f 150 ps 4 LOS Fault V losfault Vcc – 0.5 V CC_ h ost V 5 LOS Normal V los nor m V ee V ee +0.5 V 5 Power Supply Rejection PSR 1 00 mVpp 6 Deterministic Jitter Contribution R X ΔDJ 51.7 ps 7 Total Jitter Contribution RXΔTJ 122.4 ps Notes: 1. AC coupled. 2. Or open circuit. 3. Into 100 ohm differential termination. 4. 20 – 80 % 5. LOS is LVTTL. Logic 0 indicates normal operati on; logic 1 indicates no signal detected.

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