Compatible with Huawei Cisco Switch 1.25g Sc 120km Bidi SFP Transceiver Module

• Customization: Available
• Type: Both Wired and Wireless
• Certification: CE, ISO, RoHS, FCC
• Model NO.: LAS24-T4955(5549)S-120
• Condition: New
• Transport Package: Blister Pack
• Trademark: Linksall
• Origin: China
• HS Code: 8517706000
• Production Capacity: 100, 000 Per Year
• Package Size: 5.00cm * 5.00cm * 5.00cm
• Package Gross Weight: 1.000kg

Product Description

 1.25Gb/s BIDI SFP Transceiver 120KM
  LAS24-T4955(5549)S-120

 Features                                            

• Compliant with Specifications for IEEE802.3Z
• Up to 1.25Gb/s Data Links
• Hot-Pluggable
• Single LC or SC receptacle
• Up to 120 km on 9/125μm SMF
• DFB laser transmitter
• APD photo-detector
• Single +3.3V Power Supply
• Monitoring Interface Compliant with SFF-8472
• Maximum Power<1W
• Industrial/Commercial operating temperature range: -40°C to +85°C/0°C to +70°C Version available
• RoHS compliant and Lead Free

  Applications

• Gigabit Ethernet
• 1x Fiber Channel
• Metro/Access Networks
• CPRI option 2/OBSAI 2x
• Other Optical Links

  Product Description
  Link-all's 120KM BIDI SFP transceivers are high performance, cost effective modules supporting data rateupto 1.25Gbps and 120km transmission distance with SMF.
  The transceiver consists of three sections: a DFB laser transmitter, an APD photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. All modules satisfy class I laser safety requirements. The transceivers are compatible with SFP Multi-Source Agreement (MSA) and SFF-8472. Forfurther information, please refer to SFP MSA.

 Absolute Maximum Ratings

Parameter		Symbol	Min.	Typical	Max.	Unit
Storage Temperature		TS	-40		+85	°C
Supply Voltage		VCC	-0.5		4	V
Relative Humidity		RH	0		85	%

Recommended Operating Environment

 

Parameter			Min	Typical	Max	Unit
Operating Case Temperature	Standard	Tc	0		+70	°C
	Industrial		-40		+85	°C
Power Supply Voltage		Vcc	3.13	3.3	3.47	V
Power Supply Current		Icc			300	mA
Power Supply Noise Rejection					100	mVp-p
Transmission Distance					120	KM
Data Rate				1.25		Gbps
Coupled Fiber		Single mode fiber				9/125um SMF

Optical Characteristics 

Optical transmitter Characteristics
Parameter		Max	Notes
Launched Power (avg.)		+5
Center Wavelength		1510	1490TX1550RX
		1570	1550TX1490RX
Side Mode Suppression Ratio
Extinction Ratio
Spectrum Bandwidth(-20dB)		1
Jitter P-P		0.1	1

Relative Intensity Noise	RIN	90	100	110	ohm
Optical Tx Output disable	Pdis			-45	dBm
Output Eye Diagram	Complies with IEEE802.3z eye masks when filtered
Optical receiver Characteristics
Parameter	Symbol	Min	Typical	Max	Unit	Notes
Receiver Sensitivity	S			-31	dBm	2
Wavelength Range	λc	1530	1550	1570	nm	1490TX1550RX
		1470	1490	1510	nm	1550TX1490RX
Optical Power Input Overload	Pin-max	-10			dBm
LOS	Pd			-32	dBm	3
	Pa	-40
LOS hysteresis		0.5	2	6	dB

Notes:
1. Measure at 2^7-1 NRZ PRBS pattern.
2. Measured with Light source 1550nm(1490nm), ER=9dB; BER =<10^-12 @PRBS=2^7-1 NRZ.3. When LOS de-asserted, the RX data+/- output is signal output

Electrical Characteristics

Parameter			Symbol		Min	Typical	Max	Unit	Notes
Transmitter
Total Supply Current				Icc			A	mA	1
TX Disable		Disable			2.0		Vcc+0.3	V
		Enable			0		0.8	V
TX Fault		Fault			2.0		Vcc+0.3	V
		Normal			0		0.8	V
Receiver
LOS Output Voltage-				High	2.0		Vcc+0.3	V
				Low	0		0.8	V
Total Supply Current				Icc			B	mA	1

Pin Assignment

Diagram of Host Board Connector Block Pin Numbers and Names
Pin Function Definitions

Pin No	Name	Function	Plug Seq	Notes
1	VeeT	Transmitter Ground (Common with Receiver Ground)	1	1
2	TX Fault	Transmitter Fault Indication. Low normal operation, High Fault indication	3
3	TX Disable	Transmitter Disable. Laser output disabled on high or open.	3	2
4	MOD-DEF(2)	Module Definition 2. Data line for Serial ID.	2	3
5	MOD-DEF(1)	Module Definition 1. Clock line for Serial ID.	3	3
6	MOD-DEF(0)	Module Definition 0. Grounded within the module.	3	3
7	Rate Select	Not Connected	3	4
8	LOS	Loss of Signal indication. Logic 0 indicates normal operation.	3	5
9	VeeR	Receiver Ground (Common with Transmitter Ground)	1	1
10	VeeR	Receiver Ground (Common with Transmitter Ground)	1	1
11	VeeR	Receiver Ground (Common with Transmitter Ground)		1
12	RD-	Inv. Received Data Out	3	6
13	RD+	Received Data Out	3	6
14	VeeR	Receiver Ground (Common with Transmitter Ground)	3	1
15	VccR	Receiver Power	2	1
16	VccT	Transmitter Power	2
17	VeeT	Transmitter Ground	1
18	TD+	Transmit Data In	3	6
19	TD-	Inv. Transmit In	3	6
20	VeeT	Transmitter 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 - 10k ohms 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 select is not used.
5. LOS is open collector output. Should be pulled up with 4.7k- 10k ohms on 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

SFP Module EEPROM Information and Management
The SFP modules implement the 2-wire serial communication protocol as defined in the SFP -8472. Theserial ID information of the SFP modules and Digital Diagnostic Monitor parameters can be accessed throughthe I2C interface at address A0h and A2h. The memory is mapped in Table 1. Detailed ID information (A0h) islisted in Table 2. And the DDM specification at address A2h. For more details of the memory map and bytedefinitions, please refer to the SFF-8472,"Digital Diagnostic Monitoring Interface for Optical Transceivers".The DDM parameters have been internally calibrated.
Table 1.Digital Diagnostic Memory Map (Specific Data Field Descriptions)

Table 1- EEPROM Serial ID Memory Contents (A0h)         

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)
3-10		8		Transceiver
11		1		Encoding			NRZ(03h)
12		1		BR, Nominal			Nominal baud rate, unit of 100Mbps
13-14		2		Reserved			(0000h)
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 supported 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: Link-all
36		1		Reserved
37-39		3		Vendor OUI			SFP transceiver vendor OUI ID
40-55		16		Vendor PN			Part Number in ASCII
56-59		4		Vendor rev			Revision level for part number
60-62		3		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			Link-all's Manufacturing date code
92-94		3		Reserved
95		1		CCEX			Check code for the extended ID Fields (addresses 64 to 94)
Vendor Specific ID Fields
96-127		32		Readable			Link-all specific date, read only
128-255		128		Reserved			Reserved for SFF-8079

Digital Diagnostic Monitor Characteristics

Data Address	Parameter	Accuracy	Unit
96-97	Transceiver Internal Temperature	±3.0	°C
98-99	VCC3 Internal Supply Voltage	±3.0	%
100-101	Laser Bias Current	±10	%
102-103	Tx Output Power	±3.0	dB
104-105	Rx Input Power	±3.0	dB

Regulatory Compliance
The SFP complies with international Electromagnetic Compatibility (EMC) and international safetyrequirements and standards (see details in Table following).
Feature

Electrostatic Discharge (ESD) to the Electrical Pins					MIL-STD-883E Method 3015.7					Class 1(>500 V)
Electrostatic Discharge (ESD) to the Duplex Receptacle					IEC61000-4-2					Class 2(>4000V)
Electromagnetic Interference (EMI)					FCC Part 15 Class B					Compatible with standards
Immunity					IEC61000-4-3					Compatible with standards
Laser eye safety					FDA21CFR1040.10and1040.11 EN60950, EN (IEC) 60825-1,2					Compatible with Class I laser product
Component Recognition					UL and CE					Compatible with standards
ROHS					ROHS6					Compatible with standards

Ordering Information

Ordering P/Ns				Description
LAS24-T4955S-120				1.25Gb/s SFP Transceiver 1490nmTx 1550nmRx 120KM DDM, LC/UPC Receptacle, Commercial Temperature
LAS24-T5549S-120				1.25Gb/s SFP Transceiver 1550nmTx 1490nmRx 120KM DDM, LC/UPC Receptacle, Commercial Temperature

Notes:
1.Default case operating temperature is 0 ~ +70°C. If you need -40 ~ +85°C products, add"I" after PartNumber.
2.If you need more customized services, please contact us.
Warnings
Handling Precautions:
This device is susceptible to damage as a result of electrostatic discharge (ESD). A static free environment ishighly recommended. Follow guidelines according to proper ESD procedures.
Laser Safety:
Radiation emitted by laser devices can be dangerous to human eyes. Avoid eye exposure to direct or indirectradiation.
Notice:
The information provided on this page contains the product target specifications which are subject to change without notice.
Check with Link-all Sales Office for product updates, changes in specifications, sample availability andproduction release dates.