1.25 G DF 1310nm D 20km LC

1.25Gbps SFP Optical Transceiver 20Km LC DDM Feature: • SFP package with LC connector • 1310nm FP laser and PIN photo detector • Up to 20Km transmission on SMF • +3.3V single power supply • LVPECL compatible data input/output interface • Low EMI and excellent ESD protection • laser safety standard IEC-60825 compliant • Compatible with RoHS • Digital Diagnostic SFF-8472 compliant Application: • Ethernet • Telecom • Fiber Channel Absolute Maximum Ratings: Parameter Symbol Minimum Maximum Units Storage Temperature Tst -40 +85 ˚C Supply Voltage Vcc 0 +3.6 V Operating Relative Humidity RH 5 95 % Operation Environment: Parameter Symbol Min Typical Max Units Supply Voltage Vcc 3.15 3.3 3.45 V Operating Case Temperature Commercial Tc 0 +70 ˚C Industrial -40 +85 Power Dissipation 1 W Data Rate 1.25 Gbps Optical Characteristics: (Ambient Operating Temperature 0˚ C to +70˚ C, Vcc =3.3 V) Parameter Symbol Min. Typ. Max. Units Transmitter Section Center Wavelength o 1260 1310 1360 nm Spectral Width (RMS)  - - 4 nm Average Output Power Po -8 - -3 dBm Extinction Ratio Er 10 - 15 dB Rise/Fall Time (20%~80%) Tr/Tf 0.26 ns Total jitter Tj 0.43 UI Optical Eye Diagram IEEE 802.3z and ANSI Fibre Channel Compatible Receiver Section Center Wavelength o 1260 1620 nm Receiver Sensitivity Rsen -24 dBm Receiver Overload Rov -3 dBm Return Loss 12 dB LOS Assert LOSA -36 dBm LOS Dessert LOSD -24 dBm LOS Hysteresis 0.5 5 Electrical Characteristics: (Ambient Operating Temperature 0˚ C to +70˚ C, Vcc =3.3 V) Parameter Symbol Min. Typ. Max. unit Transmitter Section Input Differential Impendence Zin 90 100 110 Ohm Data Input Swing Differential Vin 500 2400 mV TX Disable Disable 2.0 Vcc V Enable 0 0.8 V TX Fault Assert 2.0 Vcc V Deassert 0 0.8 V Receiver Section Output differential impendence Zout 100 Ohm Data Input Swing Differential Vout 370 2000 mV Rx_LOS Assert 2.0 Vcc V Deassert 0 0.8 V EEPROM INFORMATION (A0: Addr Field Size (Bytes) Name of Field HEX Description 0 1 Identifier 03 SFP 1 1 Ext. Identifier 04 MOD4 2 1 Connector 07 LC 3- 10 8 Transceiver 00 00 00 02 12 00 0D 01 Transmitter Code 11 1 Encoding 01 8B10B 12 1 BR, nominal 0D 1250M bps 13 1 Reserved 00 14 1 Length (9um)-km 0A/14 10km/20km 15 1 Length (9um) 64/C8/FF 16 1 Length (50um) 37 550m 17 1 Length (62.5um) 37 550m 18 1 Length (copper) 00 19 1 Reserved 00 20-35 16 Vendor name 57 49 4E 54 4F 50 20 20 20 20 20 20 20 20 20 20 36 1 Reserved 00 37-39 3 Vendor OUI 00 00 00 40-55 16 Vendor PN xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx ASC II 56-59 4 Vendor rev 31 2E 30 20 V1.0 60-61 2 Wavelength 05 1E 1310nm 62 1 Reserved 00 63 1 CC BASE XX Check sum of byte 0~62 64-65 2 Options 00 1A LOS, TX_DISABLE, TX_FAULT 66 1 BR, max 32 50% 67 1 BR, min 32 50% 00 00 00 00 00 00 00 00 00 Unspecified 68-83 16 Vendor SN 00 00 00 00 00 00 00 84-91 8 Vendor date code XX XX XX 20 Year, Month, Day 92-94 3 Reserved 00 95 1 CC_EXT XX Check sum of byte 64~94 96-255 160 Vendor specific Diagnostics: Parameter Range Accuracy Unit Calibration Temperature C -5 ~ 70 ±3 ºC Internal I -40 ~ 80 ±3 Voltage 0 ~ VCC 0.1 V Internal Bias Current 0 ~ 120 ±2 mA Internal Tx Power -8 ~ -3 ±1 dBm Internal Rx Power <-3 ±1 dBm Internal Pin Description: Pins Name Discription NOTE 1 VeeT Transmitter Ground 2 Tx Fault Transmitter Fault Indication 1 3 Tx Disable Transmitter Disable 2 4 MOD DEF2 Module Definition 2 3 5 MOD DEF1 Module Definition 1 3 6 MOD DEF0 Module Definition 0 3 7 Rate Select Not Connected 8 LOS Loss of Signal 4 9 VeeR Receiver Ground 10 VeeR Receiver Ground 11 VeeR Receiver Ground 12 RD- Inv. Received Data Output 5 13 RD+ IReceived Data Output 5 14 VeeR Receiver Ground 15 VccR Receiver Power 16 VccT Transmitter Power 17 VeeT Transmitter Ground 18 TD+ Transmit Data Input 6 19 TD- Inv. Transmit Data Input 6 20 VeeT Transmitter Ground Notes: 1. TX Fault is an open collector output, which should be pulled up with a 4.7k~10kΩ resistor on the host board to a voltage between 2.0V and Vcc+0.3V. Logic 0 indicates normal operation; logic 1 indicates a laser fault of some kind. In the low state, the output will be pulled to less than 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 4.7k~10kΩ resistor. Its states are: Low (0~0.8V): Transmitter on (>0.8V, <2.0V): Undefined High (2.0~3.3V): Transmitter Disabled Open: Transmitter Disabled 3. MOD-DEF 0,1,2 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 VccT 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 is an open collector output, which should be pulled up with a 4.7k~10kΩ resistor on the host board to a voltage between 2.0V and Vcc+0.3V. Logic 0 indicates normal operation; logic 1 indicates loss of signal. In the low state, the output will be pulled to less than 0.8V. 5. These are the differential receiver output. They are internally AC-coupled 100Ω differential lines which should be terminated with 100Ω (differential) at the user SERDES. 6. These are the differential transmitter inputs. They are AC-coupled, differential lines with 100Ω differential termination inside the module. Recommended Application Circuit: Outline drawing (mm): Ordering information: Part Number Product Description 1.25DF1310-20LAT SFP 1.25G 1310nm 20km LC DDM