Generic Compatible PX20+ EPON OLT 1.25G 1490/1310nm 20km Simplex SC SMF DOM Optical Transceiver Module

SPECIFICATIONS
Product Model	SFP-EPON-PX20+1.25-1413-20-SCS	Manufacturer Brand	PHILISUN
Package Type	SFP	Optical Connector	SC
Max Data Rate	1.25Gbps	Class	PX20+
Effective transmission distance	20KM
Wavelength	1310nm/1490nm 1490nm/1310nm	Operating Voltage	3.3V
Fiber Type	SMF	Core Size	9/125µm
Transmitter Type	DFB	Receiver Type	APD
TX Power	2.5~7.0dBm	Receiver Sensitivity	-30dBm
Digital Diagnostic Monitoring(DDM)	YES	Receiver Overload	-8dBm
Power Consumption	<1W	Protocols	SFP MSA SFF-8472
Operating temperature(Commercial)	0℃~+70℃	Storage Temperature(Commercial)	-40℃~+85℃
Operating temperature(Industrial)	-40℃~+85℃	Storage Temperature(Industrial)	-40℃~+85℃

PRODUCT PRESENTATION

The PHILISUN EPON OLT PX20+ 3dBm Transceiver is a bidirectional 1.25G SFP module designed for OLT equipment, operating at 1490nm downstream / 1310nm upstream wavelengths over single-mode fiber (SMF) for distances up to 20km. Featuring an SC connector interface and compliant with the PX20+ class with a 3dBm optical budget, it provides differential 100 Ohm termination for both transmitter input and receiver output data lines. Internal AC coupling ensures quality signal termination, while its design minimizes differential-to-common mode conversion for enhanced signal integrity and reduced EMI.

TRANSCEIVER SERIES PRODUCTS

PRODUCTION & TESTING EQUIPMENT

PERFORMANCE PARAMETER

Absolute Maximum Ratings
Parameter	Symbol	Min.	Max.	Unit
Power Supply Voltage	VCC	0	3.6	V
Storage Temperature	Tc	-40	85	℃
Operating Case Temperature	Tc	0	70	℃
	TI	-40	85
Relative Humidity	RH	5	95	%
RX Input Average Power	Pmax	–	-7	dBm
These values represent the damage threshold of the module. Stress in excess of any of the individual Absolute maximum ratings can cause immediate catastrophic damage to the module even if all other parameters are within recommended operating conditions.

Recommended Operating Environment
Parameter	Symbol	Min.	Typical	Max.	Unit
Power Supply Voltage	VCC	3.135	3.3	3.465	V
Power Supply Current	Icc	–	–	300	mA
Operating Case Temperature	TC	0	25	70	℃
	TI	-40	25	85
Recommended operating environment specifies parameters for which the electrical and optical characteristics hold unless otherwise noted.

Electrical Characteristics
Parameter	Symbol	Min.	Typical	Max	Unit	Notes
Data Rate	–	–	1.25	–	Gbps	–
Power Consumption	–	–	800	1000	mW	–
Transmitter
Single Ended Output Voltage Tolerance	–	-0.3	–	4	V	–
Common Mode Voltage Tolerance	–	15	–	–	mV	–
Tx Input Diff Voltage	VI	180	–	1200	mV	–
Tx Fault	VoL	-0.3	–	0.4	V	At 0.7mA
Data Dependent Input Jitter	DDJ	–	–	0.1	UI	–
Data Input Total Jitter	TJ	–	–	0.28	UI	–
Receiver
Single Ended Output Voltage Tolerance	–	-0.3	–	4	V	–
Rx Output Diff Voltage	Vo	300	‐	1000	mV	LOS Assert Time LOS De‐assert Time
LOS Assert Time	TAssert	‐	‐	500	ns
LOS De‐assert Time	TDeassert	‐	‐	500	ns
Receiver Threshold Settling Time	TSETTLING	‐	‐	250	ns

PIN	Logic	Symbol	Name / Description	Note
1	–	VeeT	Module Transmitter Ground	1
2	LVTTL-O	TX_Fault	Module Transmitter Fault	–
3	LVTTL-I	TX_Dis	Transmitter Disable; Turns off Transmitter Laser Output	–
4	LVTTL-I/O	SDA	2-Wire Serial Interface Data Line	2
5	LVTTL-I	SCL	2-Wire Serial Interface Clock	2
6	–	MOD_DEF0	Module Definition, Grounded in the Module	–
7	LVTTL-I	RS0	Receiver Rate Select	–
8	LVTTL-O	RX_LOS	Receiver Loss of Signal Indication Active LOW	–
9	LVTTL-I	RS1	Transmitter Rate Select (not used)	–
10	–	VeeR	Module Receiver Ground	1
11	–	VeeR	Module Receiver Ground	1
12	LVPECL-O	RD-	Receiver Inverted Data Output	–
13	LVPECL-O	RD+	Receiver Data Output	–
14	–	VeeR	Module Receiver Ground	1
15	–	VccR	Module Receiver 3.3 V Supply	–
16	–	VccT	Module Receiver 3.3 V Supply	–
17	–	VeeT	Module Transmitter Ground	1
18	CML-I	TD+	Transmitter Non-Inverted Data Input	–
19	CML-I	TD-	Transmitter Inverted Data Input	–
20	–	VeeT	Module Transmitter Ground	1
Note: 1. Module ground pins GND are isolated from the module case. 2. Shall be pulled up with 4.7K-10Kohms to a voltage between 3.15V and 3.45V on the host board.

Optical Characteristics
Parameters	Unit	Values
Operating Reach	m	2 – 20K
Transmitter
Center Wavelength	nm	1490
Side Mode Suppression Ratio (min)	dB	30
Launched power
– maximum (Average)	dBm	7
– minimum (Average)	dBm	2.5
Average Launch Power of OFF Transmitter (max)	dBm	-30
Extinction Ratio (min)	dB	9
Optical Return Loss Tolerance (min)	dB	12
Receiver
Center Wavelength (range)	nm	1310
Receive Overload (max) in Average Power(note 1)	dBm	-8
Receive Sensitivity (min) in A Power(note 1)	dBm	-30
Receiver Reflectance (max)	dB	-12
Los Assert(min)	dBm	-33
Los Dessert(max)	dBm	-30
Los Hysteresis(min)	dB	0.5
Receiver power (damage, Max)	dBm	-7
Notes: 1. Average optical power shall be measured using the methods specified in TIA/EIA-455-95. 2. Power budget is defined as the different between the Rx sensitivity andthe Tx output power of the interface.