Cisco Juniper Hw Compatible 2.5GB/S Bidl SFP Transcelver 120km

• Customization: Available
• Usage: Telephone, Computer, Workstation, Server, Mobile phone, Data Center
• Type: Both Wired and Wireless
• Model NO.: LAGU-T31S-20B
• Support Network: Ethernet, GPRS, Data, Voice
• Information content: Data, Voice, Message
• Certification: CE, ISO, RoHS, FCC
• 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

2.5Gb/s BIDl SFP Transcelver 120KM
LAS48-T4955(5549)S-120

Product Features

• • Supports up to 2.5Gbps bit rates
  • Hot-pluggable SFP footprint
  • 1490nm or 1550nm DFB laser and APD photo detector, Up to 120km for SMF transmission
  • Compliant with SFP MSA and SFF-8472 with single LC receptacle
  • Compatible with RoHS
  • Single +3.3V power supply
  • Real Time Digital Diagnostic Monitoring
  • Operating case temperature: Standard: 0 to +70°C Industrial: -40 to +85°C

Applications
1. SONET OC-48 / SDH STM-16
2. 2xFibre Channel
3. Gigabit Ethernet
4. CPRI option 3 / OBSAI 2x
5. Other Optical Links

Product Description
Link-all's 120KM 2.5G BIDI SFP transceivers are high performance, cost effective modules supporting data rate of 2.5Gbps 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 and SFF-8472 digital diagnostics functions.

Absolute Maximum Ratings

Parameter

Symbol

Min.

Max.

Supply Voltage

Vcc

-0.5

4.5

Storage Temperature

Ts

-40

+85

Operating Humidity

-

5

85

Recommended Operating EnvironmentBurst Mode Transmitter Timing (D23446-SSCA, TX_Burst signal low active transmitter on)

Parameter					Symbol	Remarks	Min.	Typical	Max.	Unit
Operating Temperature					TOP	Commercial	0	-	+70	ºC
						Industrial	-40	-	+85	ºC
Supply Voltage					VCC		+3.1	+3.3	+3.5	V
Power Supply Current					Icc				300	mA
Data Rate								2.5		Gbps

Optical and Electrical Characteristics

Parameter			Min	Typical	Max	Unit	Notes
Transmitter
Centre Wavelength		λc	1470	1490	1510	nm	1490Tx1550Rx
			1530	1550	1570	nm	1550Tx1490Rx
Spectral Width(-20dB)		Δλ			1	nm
Side-Mode Suppression Ratio		SMSR	30			dB
Average Output Power		Pout	+1		+5	dBm	1
Extinction Ratio		ER	9.0			dB
Data Input Swing Differential		VIN	180		1200	mV	2
Input Differential Impedance		ZIN	90	100	110	Ω
TX Disable	Disable		2.0		Vcc	V
	Enable		0		0.8	V
TX Fault	Fault		2.0		Vcc	V
	Normal		0		0.8	V
Receiver
Centre Wavelength		λc	1470	1490	1510	nm	1490Tx1550Rx
			1530	1550	1570	nm	1550Tx1490Rx
Receiver Sensitivity					-27	dBm	3
Receiver Overload			-7			dBm	3
LOS De-Assert		LOSD			-28	dBm
LOS Assert		LOSA	-38			dBm
LOS Hysteresis			0.5		4	dB
Data Output Swing Differential		Vout			1000		4
LOS		High			Vcc
		Low			0.8

Notes:
1. The optical power is launched into SMF.
2. PECL input, internally AC-coupled and terminated.
3. Measured with a PRBS 223-1 test pattern @2500Mbps, BER≤1×10-124. Internally AC-coupled.

Pin Function Definitions 

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	SDA	SDA Serial Data Signal	3
5	SCL	SCL Serial Clock Signal	3
6	MOD_ABS	Module Absent. Grounded within the module	3
7	RS0	Not Connected	3
8	LOS	Loss of Signal	3	Note 3
9	RS1	Not Connected	3
10	VEER	Receiver ground	1
11	VEER	Receiver ground	1
12	RD-	Inv. Received Data Out	3	Note 4
13	RD+	Received Data Out	3	Note 4
14	VEER	Receiver ground	1
15	VCCR	Receiver Power Supply	2
16	VCCT	Transmitter Power Supply	2
17	VEET	Transmitter Ground	1
18	TD+	Transmit Data In	3	Note 5
19	TD-	Inv. Transmit Data In	3	Note 5
20	VEET	Transmitter Ground	1

Notes:
Plug Seq.: Pin engagement sequence during hot plugging.
1) TX Fault is an open collector output, which should be pulled up with a 4.7k~10kΩ resistor on the hostboard 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) Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V.
3) LOS is open collector output. Should be pulled up with 4.7k~10kΩ on host board to a voltage between
2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.
4) RD-/+: These are the differential receiver outputs. They are internally AC-coupled 100 differential lines
which should be terminated with 100Ω (differential) at the user SERDES.
5) TD-/+: These are the differential transmitter inputs. They are internally AC-coupled, differential lines with100Ω differential termination inside the module.
EEPROM Information and Management
The SFP transceivers support the 2-wire serial communication protocol as defined in the SFP MSA.
The standard SFP serial ID provides access to identification information that describes the transceiver'scapabilities, standard interfaces, manufacturer, and other information.
Additionally, The SFP transceivers provide a unique enhanced digital diagnostic monitoring interface, whichallows real-time access to device operating parameters such as transceiver temperature, laser bias current,transmitted optical power, received optical power and transceiver supply voltage. It also defines asophisticated system of alarm and warning flags, which alerts end-users when particular operatingparameters are outside of a factory set normal range.
The SFP MSA defines a 256-byte memory map in EEPROM that is accessible over a 2-wire serial interface atthe 8 bit address 1010000X (A0h).The digital diagnostic monitoring interface makes use of the 8 bit address1010001X (A2h), so the originally defined serial ID memory map remains unchanged.
The operating and diagnostics information is monitored and reported by a Digital Diagnostics TransceiverController (DDTC) inside the transceiver, which is accessed through a 2-wire serial interface. When the serialprotocol is activated, the serial clock signal (SCL, Mod Def 1) is generated by the host. The positive edgeclocks data into the SFP transceiver into those segments of the E2PROM that are not write-protected. The negative edge clocks data from the SFP transceiver. The serial data signal (SDA, Mod Def 2) is bi-directionalfor serial data transfer. The host uses SDA in conjunction with SCL to mark the start and end of serial protocolactivation. The memories are organized as a series of 8-bit data words that can be addressed individually orsequentially.
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	SONET
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
36	1	Reserved
37-39	3	Vendor OUI	SFP transceiver vendor OUI ID
40-55	16	Vendor PN	Part Number:"LAD48-DxxS-120" (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	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	Specific date, read only

Digital Diagnostic Monitor Characteristics

Data Address
96-97	Transceiver Internal Temperature	±3.0	°C	0 to +70 or -40 to +85
98-99	VCC3 Internal Supply Voltage	±3.0	%	3.0 to 3.6
100-101	Laser Bias Current	±10	%	0 to 100
102-103	Tx Output Power	±3.0	dB	+1 to +5
104-105	Rx Input Power	±3.0	dB	-27 to -7

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

Feature	Reference	Performance
Electrostatic discharge(ESD)	IEC/EN 61000-4-2	Compatible with standards
Electromagnetic Interference (EMI)	FCC Part 15 Class B EN 55022 Class B (CISPR 22A)	Compatible with standards
Laser Eye Safety	FDA 21CFR 1040.10, 1040.11 IEC/EN	Class 1 laser product
	60825-1,2
Component Recognition	IEC/EN 60950, UL	Compatible with standards
ROHS	2002/95/EC	Compatible with standards
EMC	EN61000-3	Compatible with standards

Ordering Information

Ordering P/Ns	Description
LAS48-T4955S-120	2.5Gb/s SFP Transceiver 1490nmTx 1550nmRx 120KM DDM, LC/UPC Receptacle, Commercial Temperature
LAS48-T5549S-120	2.5Gb/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 Part Number.
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 is highly 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 indirect radiation.
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 and production release dates.