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Compatible with Huawei Zte Cisco Switch 1.25g 1310 /1550nm Sc 20km Bidi SFP Transceiver Module

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Model NO.
LAS25-C1310S-20A
HS Code
8517706000
Model NO.
LAS25-C1310S-20A
HS Code
8517706000
 1.25Gb/s SFP Optical Transceiver with DDMI Hot Pluggable, Duplex LC, +3.3V, 1310nm, FP-LD, Single-Mode, 20km
 
  1. Features
                                           
  • Compliant with Specifications for IEEE802.3Z
  • Multi-Source Package with Duplex LC Connector
  • Up to 1.25Gb/s Data Links
  • Single Mode 1310nm FP-LD
  • Single +3.3V Power Supply
  • Hot-Pluggable
  • Compliant with Bellcore TA-NWT-000983
  • Eye Safety Designed to Meet Laser Class1, Compliant with IEC60825-1
  • RoHS Compliant Products
 
  1. Applications
 
  • Gigabit Ethernet
  • 1x Fiber Channel
  • Switch to Switch Interface
  • Switched Backplane Applications
  • Router/Server Interface
  • Other Optical Links
 
  1. Specification
 
  • Electrical and Optical Characteristics: (Condition: Ta=TOP)
ParameterSymbolMin.TypicalMax.Unit
Transmitter Differential Input Volt+/-TX_DAT200 2400mV p-p
Supply CurrentICC 130180mA
Tx_Disable Input Voltage - LowVIL0 0.8V
Tx_Disable Input Voltage - HighVIH2.0 VccV
Tx_Fault Output Voltage - LowVOL0 0.8V
Tx_Fault Output Voltage - HighVOH2.0 VccV
Receiver Differential Output Volt+/-RX_DAT600 1400mV p-p
Rx_LOS Output Voltage- LowVOL0 0.8V
Rx_LOS Output Voltage- HighVOH2.0 VccV
 
  • Transmitter Section
ParameterSymbolMin.TypicalMax.Unit
Data RateB-1250-Mb/s
Centre Wavelengthλc129613101330nm
Output Spectral Width△λ--4nm
Average Output PowerPo-9--3dBm
Extinction RatioEXT9--dB
Data Input Voltage-HighVIHSVcc-1.16-Vcc-0.89V
Data Input Voltage -LowVILSVcc-1.82-Vcc-1.48V
Supply CurrentICC-90150mA
Output Optical EyeCompliant with IEEE802.3Z
Receiver Section:
ParameterSymbolMin.TypicalMax.Unit
Receive SensitivityPmin---25dBm
Maximum Input PowerPMAX-3--dBm
Signal Detect Threshold-De-AssertSD---23dBm
Signal Detect Threshold-AssertSA-33--dBm
Hysteresis--2.0-dBm
Output High VoltageVOHVcc-1.03 -Vcc-0.89V
Output Low VoltageVOLVcc-1.82 -Vcc-1.63V
Operating Wavelengthλc1100-1600nm
Supply CurrentICC-80110mA
 
  • Absolute Maximum Ratings: (TC=25ºC)
ParameterSymbolRemarksMin.Max.Unit
Storage TemperatureTST--40+85ºC
Operating TemperatureTIPX=10+70ºC
X=2-40+85ºC
Input VoltageTCC-0+5V
 
  • Recommended Operating Environment
ParameterSymbolRemarksMin.TypicalMax.Unit
Supply VoltageVCC-+3.0+3.3+3.6V
Operating TemperatureTOPX=10-+70ºC 
X=2-40-+85ºC 
 
  • Timing Characteristics
ParameterSymbolMin.TypicalMax.Unit
TX_DISABLE Assert Timet_off 310usec
TX_DISABLE Negate Timet_on 0.51msec
Time to initialize include reset of TX_FAULTt_int 30300msec
TX_FAULT from fault to assertiont_fault 20100usec
TX_DISBEL time to start resett_reset10  usec
Receiver Loss of Signal Assert Time (off to On)TA,RX_LOS  100usec
Receiver Loss of Signal Assert Time (on to off)Td,RX_LOS  100usec
          
 
  1. Pin Description
 
PinSymbolName/DescriptionRef
1VEETTransmitter Ground (Common with Receiver Ground)1
2TFAULTTransmitter Fault. Low normal operation, High Fault indication 
3TDISTransmitter Disable. Laser output disabled on high or open2
4MOD_DEF(2)Module Definition 2.Data line for Serial ID3
5MOD_DEF(1)Module Definition 1.Clock line for Serial ID3
6MOD_DEF(0)Module Definition 0.Grounded within the moudle3
7Rate SelectNo connection required 
8LOSLoss of Signal indication. Logic 0 indicates normal operation.4
9VEERReceiver Ground (Common with Transmitter Ground)1
10VEERReceiver Ground (Common with Transmitter Ground)1
11VEERReceiver Ground (Common with Transmitter Ground)1
12RD-Receiver Inverted DATA out.AC Coupled 
13RD+Receiver Non-inverted DATA out.AC Coupled 
14VEERReceiver Ground (Common with Transmitter Ground)1
15VCCRReceiver Power Supply 
16VCCTTransmitter Power Supply 
17VEETTransmitter Ground (Common with Receiver Ground)1
18TD+Transmitter Non-inverted DATA in.AC Coupled 
19TD-Transmitter Inverted DATA in.AC Coupled 
20VEETTransmitter Ground (Common with Receiver Ground)1
Notes:
1). Circuit ground is internally isolated 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 - 10kohms on host board to a voltage between 2.0V and 3.6V. MOD_DEF(0) pulls line
   low to indicate module is plugged in.
  1. . LOS is open collector output. Should be pulled up with 4.7k - 10kohms on host board to a voltage between 2.0V and
       3.6V.Logic 0 indicates normal operation; logic 1 indicates loss of signal.
 
  1. Serial ID Memory Contents
 
Data AddressLength
(Byte)		Name of
Length		Description and Contents
Base ID Fields
01IdentifierType of Serial transceiver (03h=SFP)
11ReservedExtended identifier of type serial transceiver (04h)
21ConnectorCode of optical connector type (07=LC)
3-108TransceiverGigabit Ethernet 1000Base-SX & Fiber Channel
111EncodingNRZ (03h)
121BR,NominalNominal baud rate, unit of 100Mbps
13-142Reserved(0000h)
151Length(9um)Link length supported for 9/125um fiber, units of 100m
161Length(50um)Link length supported for 50/125um fiber, units of 10m
171Length(62.5um)Link length supported for 62.5/125um fiber, units of 10m
181Length(Copper)Link length supported for copper, units of meters
191Reserved 
20-3516Vendor NameSFP vendor name
361Reserved 
37-393Vendor OUISFP transceiver vendor OUI ID
40-5516Vendor PNPart Number: "LAS24-xxxxxx" (ASCII)
56-594Vendor revRevision level for part number
60-612WavelengthLaser wavelength
621Reserved 
631CCIDLeast significant byte of sum of data in address 0-62
Extended ID Fields
64-652OptionIndicates which optical SFP signals are implemented
(001Ah = LOS, TX_FAULT, TX_DISABLE all supported)
661BR, maxUpper bit rate margin, units of %
671BR, minLower bit rate margin, units of %
68-8316Vendor SNSerial number (ASCII)
84-918Date codeManufacturing date code
92-943Reserved 
951CCEXCheck code for the extended ID Fields (addresses 64 to 94)
Vendor Specific ID Fields
96-12732ReadableSpecific date, read only
 
  1. Serial ID Memory Contents: (A2H)
 
AddressBytesNameDescription
00-012Temp High AlarmMSB at low address
02-032Temp Low AlarmMSB at low address
04-052Temp High WarningMSB at low address
06-072Temp Low WarningMSB at low address
08-092Voltage High AlarmMSB at low address
10-112Voltage Low AlarmMSB at low address
12-132Voltage High WarningMSB at low address
14-152Voltage Low WarningMSB at low address
16-172Bias High AlarmMSB at low address
18-192Bias Low AlarmMSB at low address
20-212Bias High WarningMSB at low address
22-232Bias Low WarningMSB at low address
24-252TX Power High AlarmMSB at low address
26-272TX Power Low AlarmMSB at low address
28-292TX Power High WarningMSB at low address
30-312TX Power Low WarningMSB at low address
32-332RX Power High AlarmMSB at low address
34-352RX Power Low AlarmMSB at low address
36-372RX Power High WarningMSB at low address
38-392RX Power Low WarningMSB at low address
40-5516ReservedReserved for future monitored quantities
56-594Rx_PWR(4)Single precision floating point calibration data - Rx optical power. Bit 7 of byte 56 is MSB. Bit 0 of byte 59 is LSB.
60-634Rx_PWR(3)Single precision floating point calibration data - Rx optical power. Bit 7 of byte 60 is MSB. Bit 0 of byte 63 is LSB.
64-674Rx_PWR(2)Single precision floating point calibration data - Rx optical power. Bit 7 of byte 64 is MSB, bit 0 of byte 67
is LSB.
68-714Rx_PWR(1)Single precision floating point calibration data - Rx optical power. Bit 7 of byte 68 is MSB, bit 0 of byte 71
is LSB.
72-754Rx_PWR(0)Single precision floating point calibration data - Rx optical power. Bit 7 of byte 72 is MSB, bit 0 of byte 75
is LSB.
76-772Tx_I(Slope)Fixed decimal (unsigned) calibration data, laser bias current. Bit 7 of byte 76 is MSB, bit 0 of byte 77 is LSB.
78-792Tx_I(Offset)Fixed decimal (signed two's complement) calibration data, laser bias current. Bit 7 of byte 78 is MSB, bit 0
of byte 79 is LSB
80-812Tx_PWR(Slope)Fixed decimal (unsigned) calibration data, transmitter coupled output power. Bit 7 of byte 80 is MSB, bit 0 of byte81 is LSB.
82-832Tx_PWR(Offset)Fixed decimal (signed two's complement) calibration data, transmitter coupled output power. Bit 7 of byte
82 is MSB, bit 0 of byte 83 is LSB.
84-852T(Slope)Fixed decimal (unsigned) calibration data, internal module temperature. Bit 7 of byte 84 is MSB, bit 0 of byte 85 is LSB.
86-872T(Offset)Fixed decimal (signed two's complement) calibration data, internal module temperature. Bit 7 of byte 86 is MSB, bit 0 of byte 87 is LSB.
88-892V(Slope)Fixed decimal (unsigned) calibration data, internal module supply voltage. Bit 7 of byte 88 is MSB, bit 0
of byte 89 is LSB.
90-912V(Offset)Fixed decimal (signed two's complement) calibration data, internal module supply voltage. Bit 7 of byte 90
is MSB. Bit 0 of byte 91 is LSB.
92-954ReservedReserved
 
ByteBitNameDescription
Converted analog values. Calibrated 16 bit data
96AllTemperature MSBInternally measured module temperature.
97AllTemperature LSB 
98AllVcc MSBInternally measured supply voltage in transceiver.
99AllVcc LSB 
100AllTX Bias MSBInternally measured TX Bias Current.
101AllTX Bias LSB 
102AllTX Power MSBMeasured TX output power.
103AllTX Power LSB 
104AllRX Power MSBMeasured RX input power.
105AllRX Power LSB 
106AllReserved MSBReserved for 1st future definition of digitized analog input
107AllReserved LSBReserved for 1st future definition of digitized analog input
108AllReserved MSBReserved for 2nd future definition of digitized analog input
109AllReserved LSBReserved for 2nd future definition of digitized analog input
Optional Status/Control Bits
1107TX Disable StateDigital state of the TX Disable Input Pin. Not supported.
1106Soft TX DisableRead/write bit that allows software disable of laser.Not supported.
1105Reserved 
1104RX Rate Select StateDigital state of the SFP RX Rate Select Input Pin.Not supported.
1103Soft RX Rate SelectRead/write bit that allows software RX rate select.Not supported.
1102TX FaultDigital state of the TX Fault Output Pin.
1101LOSDigital state of the LOS Output Pin.
1100Data ReadyIndicates transceiver has achieved power up and data is ready
1117-0ReservedReserved.
Reserved Optional Alarm and Warning Flag Bits
1127Temp High AlarmSet when internal temperature exceeds high alarm level.
1126Temp Low AlarmSet when internal temperature is below low alarm level.
1125Vcc High AlarmSet when internal supply voltage exceeds high alarm level.
1124Vcc Low AlarmSet when internal supply voltage is below low alarm level.
1123TX Bias High AlarmSet when TX Bias current exceeds high alarm level.
1122TX Bias Low AlarmSet when TX Bias current is below low alarm level.
1121TX Power High AlarmSet when TX output power exceeds high alarm level.
1120TX Power Low AlarmSet when TX output power is below low alarm level.
1137RX Power High AlarmSet when Received Power exceeds high alarm level.
1136RX Power Low AlarmSet when Received Power is below low alarm level.
1135Reserved Alarm 
1134Reserved Alarm 
1133Reserved Alarm 
1132Reserved Alarm 
1131Reserved Alarm 
1130Reserved Alarm 
114AllReserved 
115AllReserved 
1167Temp High WarningSet when internal temperature exceeds high warning level.
1166Temp Low WarningSet when internal temperature is below low warning level.
1165Vcc High WarningSet when internal supply voltage exceeds high warning level.
1164Vcc Low WarningSet when internal supply voltage is below low warning level.
1163TX Bias High WarningSet when TX Bias current exceeds high warning level.
1162TX Bias Low WarningSet when TX Bias current is below low warning level.
1161TX Power High WarningSet when TX output power exceeds high warning level.
1160TX Power Low WarningSet when TX output power is below low warning level.
1177RX Power High WarningSet when Received Power exceeds high warning level.
1176RX Power Low WarningSet when Received Power is below low warning level.
1175Reserved Warning 
1174Reserved Warning 
1173Reserved Warning 
1172Reserved Warning 
1171Reserved Warning 
1170Reserved Warning 
118AllReserved 
119AllReserved 
       
 
Byte# ByteNameDescription
120-1278Vendor Specific00h.
128-255128 Writable Memory


Compatible with Huawei Zte Cisco Switch 1.25g 1310/1550nm Sc 20km Bidi SFP Transceiver ModuleCompatible with Huawei Zte Cisco Switch 1.25g 1310/1550nm Sc 20km Bidi SFP Transceiver Module
Compatible with Huawei Zte Cisco Switch 1.25g 1310/1550nm Sc 20km Bidi SFP Transceiver Module
Compatible with Huawei Zte Cisco Switch 1.25g 1310/1550nm Sc 20km Bidi SFP Transceiver ModuleCompatible with Huawei Zte Cisco Switch 1.25g 1310/1550nm Sc 20km Bidi SFP Transceiver Module

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