SFP 2.5Gbps (0.3KM)

850nm VCSEL, Duplex LC, 2.5GBase-X SFP Transceiver

Distance: 0.3KM
Standard Operating Temperature: -10°C ~ 70°C
Wide Operating Temperature: -40°C ~ 85°C

OVERVIEW

Lantech 2.5GBase-X Small Form Factor Pluggable SFP transceivers are compliant with the current SFP Multi-Source Agreement (MSA) Specification. The high performance 850nm VCSEL transmitter and high sensitive PIN receiver provide superior performance for SONET/SDH applications up to 0.3km optical links with multi mode fiber.

FEATURES

SPECIFICATIONS

Absolute Maximum Ratings

Parameter	Symbol	Min.	Max.	Unit	Note
Storage Temperature	TST	-40	+85	°C
Supply Voltage	Vcc	-0.5	4.0	V
Storage Relative Humidity	RH	5	95	%

Recommended Operating Conditions

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Case Operating Temperature (Standard model)	TOP	-10		70	°C
Case Operating Temperature (-E model)	TOP	-40		85	°C
Supply Voltage	Vcc	+3.15	+3.3	+3.45	V
Supply Current	ICC			240	mA

Transmitter Electro-Optical Characteristics

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Optical launch Power	PO	-9		-3	dBm	1
Center Wavelength	λC	830	850	870	nm
Spectral Width (RMS)	Δλ			0.85	nm
Optical Extinction Ratio	ER	3.5			dB
Rise/Fall Time (10%~90%)	Tr/Tf			0.16	ns
Optical Eye Mask		ITU-T G.957 STM-16
Differential Data Input Voltage	VDIFF	400		2000	mV
Transmit Disable Voltage	VDIS	2.0		Vcc	V
Transmit Enable Voltage	VEN	GND		GND+0.8	V
Notes: 1. The optical power is launched into a 50/125μm multi-mode fiber.

Receiver Electro-Optical Characteristics

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Receiver Sensitivity	PINMIN			-16	dBm	1
Maximum Input Power	PINMAX	-3			dBm	1
Operating Center Wavelength	λC	770		870	nm
LOS De-Assert	LOSD			-16	dBm
LOS Assert	LOSA	-30			dBm
LOS Hysteresis	LOSVHY	0.5			dB
Differential Data Output Voltage	Vout, pp	500		1200	mV
Data Output Rise/Fall Time (10%~90%)	Tr/Tf			0.18	ns
Receiver LOS Signal Output Voltage-Low	LOSVL	GND		GND+0.5	V
Receiver LOS Signal Output Voltage-High	LOSVH	2.4		Vcc	V
Notes: 1. Measured with a PRBS 2³¹-1 test pattern @ 2488Mbps BER < 10^-10

Pin Assignment

Diagram of Host Board Connector Block Pin Numbers and Name

Pin Description

Pin	Name	Function / Description
1	VeeT	Transmitter Ground
2	TX_Fault	Transmitter Fault Indication (1)
3	TX_Disable	Transmission Disable – Module disables on high or open (2)
4	MOD-DEF(2)	Module Definition 2 – SDA: Serial Data Signal
5	MOD-DEF(1)	Module Definition 1 – SCL: Serial Clock Signal
6	MOD-DEF(0)	Module Definition 0 – LVTTL Low (3)
7	Rate Select	Not Connected – Open Circuit
8	LOS	Receiver Loss of Signal (4)
9	VeeR	Receiver Ground
10	VeeR	Receiver Ground
11	VeeR	Receiver Ground
12	RD-	Inverse Received Data out, Differential LVPECL, AC coupled
13	RD+	Received Data out, Differential LVPECL, AC coupled
14	VeeR	Receiver Ground
15	VccR	Receiver Power
16	VccT	Transmitter Power
17	VeeT	Transmitter Ground
18	TD+	Transmitter Data In, Differential LVPECL, AC coupled
19	TD-	Inverse Transmitter Data In, Differential LVPECL, AC coupled
20	VeeT	Transmitter Ground
Note1: TX Fault is open collector/drain output which should be pulled up externally with a 4.7K~ 10KΩ resistor on the host board to supply Note2: TX Disable input is used to shut down the laser output per the state table below. It is pulled up within the module with a 4.7K~10KΩ resistor. 1)Low(0~0.8V): Transmitter on; 2)Between(0.8V and 2V): Undefined; 3)High (2.0~ VccT): Transmitter Disabled; 4)Open: Transmitter Disabled Note3: Mod-DEF 0, 1, 2. These are the module definition pins. They should be pulled up with a 4.7K~10KΩ resistor on the host board to supply less than VccT+0.3V or VccR+0.3V. Mod-DEF(0) is grounded by the module to indicate that the module is present. Mod-DEF(1) is clock line of two wire serial interface for optional serial ID. Mod-DEF(2) is data line of two wire serial interface for optional serial ID. Note4: LOS (Loss of signal) is an open collector/drain output which should be pulled up externally with a 4.7K~10KΩ resistor on the host board to supply

ORDER INFORMATION

Part Number	TX	Link	Mode	Temp.
8330-262D	850nm	0.3KM	Multi-mode	-10~70°C
8330-262D-E	850nm	0.3KM	Multi-mode	-40~85°C
All SFP P/N# ended with D are with DDM function