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ManualsBrandsDeLOCK ManualsNetworkingSFP 1000Base-LX SM 1310nm

1.25GbpsSF POpticalTransceiver,20kmReach

Features

Dualdata-rateof1.25Gbps/1.063Gbpsoperation

1310nmFPlaserandPINphotodetectorfor20kmtransmission

CompliantwithSFPMSAandSFF-8472withduplexLCreceptacle

DigitalDiagnosticMonitoring:

InternalCalibrationorExternalCalibration

CompatiblewithRoHS

+3.3Vsinglepowersupply

Operatingcasetemperature:

Standard:0to+70°C

Industrial:-40to+85°C

Applications

GigabitEthernet

FiberChannel

SwitchtoSwitchinterface

Switchedbackplaneapplications

Router/Serverinterface

Otheropticaltransmissionsystems

Description

TheSFPtransceiversarehighperformance,costeffectivemodulessupportingdualdata-rateof

1.25Gbps/1.0625Gbpsand20kmtransmissiondistancewithSMF.

Thetransceiverconsistsofthreesections:aFPlasertransmitter,aPINphotodiodeintegratedwitha

trans-impedancepreamplifier(TIA)andMCUcontrolunit.AllmodulessatisfyclassIlasersafety

requirements.

ThetransceiversarecompatiblewithSFPMulti-SourceAgreement(MSA)andSFF-8472.Forfurther

Summary of content (9 pages)

PAGE 1
.25Gbps SFP Optical Transceiver, 20km Reach Features Dual data-rate of 1.25Gbps/1.063Gbps operation 1310nm FP laser and PIN photodetector for 20km transmission Compliant with SFP MSA and SFF-8472 with duplex LC receptacle Digital Diagnostic Monitoring: Internal Calibration or External Calibration Compatible with RoHS +3.
PAGE 2
information, please refer to SFP MSA. TD+/TxFault TxDis LD Driver LD Post Amp PIN+TIA LOS RD+/- Vcc MCU SCL SDA EEPROM ADC/DAC Temp Absolute Maximum Ratings Table 1 - Absolute Maximum Ratings Parameter Symbol Min Max Unit Supply Voltage Vcc -0.5 4.
PAGE 3
Optical and Electrical Characteristics (FP and PIN, 1310nm 1310nm,, 20km Reach Reach)) Table 3 - Optical and Electrical Characteristics Parameter Symbol Min Typical Max Unit 1310 1360 nm 4 nm -3 dBm Notes Transmitter Centre Wavelength λc 1260 Spectral Width (RMS) ∆λ Average Output Power Pout -9 Extinction Ratio ER 9 Optical Rise/Fall Time (20%~80%) tr/tf Data Input Swing Differential VIN 400 Input Differential Impedance ZIN 90 1 dB 100 0.
PAGE 4
Timing and Electrical Table 4 - Timing and Electrical Parameter Symbol Min Typical Max Unit Tx Disable Negate Time t_on 1 ms Tx Disable Assert Time t_off 10 µs Time To Initialize, including Reset of Tx Fault t_init 300 ms Tx Fault Assert Time t_fault 100 µs Tx Disable To Reset t_reset 10 µs LOS Assert Time t_loss_on 100 µs LOS De-assert Time t_loss_off 100 µs Serial ID Clock Rate f_serial_clock 400 KHz Vcc V 0.
PAGE 5
Digital Diagnostic Memory Map The transceivers provide serial ID memory contents and diagnostic information about the present operating conditions by the 2-wire serial interface (SCL, SDA). The diagnostic information with internal calibration or external calibration all are implemented, including received power monitoring, transmitted power monitoring, bias current monitoring, supply voltage monitoring and temperature monitoring. The digital diagnostic memory map specific data field defines as following.
PAGE 6
Pin Definitions Pin Diagram
PAGE 7
Pin Descriptions Pin Signal Name Description Plug Seq. Notes 1 VEET Transmitter Ground 1 2 TX FAULT Transmitter Fault Indication 3 Note 1 3 TX DISABLE Transmitter Disable 3 Note 2 4 MOD_DEF(2) SDA Serial Data Signal 3 Note 3 5 MOD_DEF(1) SCL Serial Clock Signal 3 Note 3 6 MOD_DEF(0) TTL Low 3 Note 3 7 Rate Select Not Connected 3 8 LOS Loss of Signal 3 9 VEER Receiver ground 1 10 VEER Receiver ground 1 11 VEER Receiver ground 1 12 RD- Inv.
PAGE 8
Recommended Interface Circuit
PAGE 9
Mechanical Dimensions Ordering information Part Number 86187 86189 Product Description 1310nm, 1.25Gbps, 20km, 1310nm, 1.