1.25G 1310nm 20KM Single mode dual fiber LC Sfp Module

√ Multi-sourced SFP package with dual LC/PC receptacles;

√ Single mode dual fibers transmission

√ Up to 20~80Km with 9/125μm SMF;

√ AC coupled for Rx and Tx side

√ 0°C to +70°C for commercial level, -40°C to +85°C for industrial level;

√ operates at data rate 1.25Gbps;

√ Complies with MIL-STD-883/GR-468

√ Complies with lots of brands of switch such as cisco h3c…

√ Can be with or without DDM

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Product Detail

Notes:

switch from a high state to a low state.
1)Value of output power and sensitivity can be customized according to the demand

Designing notice：

DSFP Pin description

Pin	Descriptions	Pin	Descriptions
1	VEET	Transmitter Ground (Common with Receiver Ground)	1
2	TFAULT	Transmitter Fault.	2
3	TDIS	Transmitter Disable. Laser output disabled on high or open.	3
4	MOD_DEF(2)	Module Definition 2. Data line for Serial ID.	4
5	MOD_DEF(1)	Module Definition 1. Clock line for Serial ID.	4
6	MOD_DEF(0)	Module Definition 0. Grounded within the module.	4
7	Rate Select	No connection required
8	LOS	Loss of Signal indication. Logic 0 indicates normal operation.	5
9	VEER	Receiver Ground (Common with Transmitter Ground)	1
10	VEER	Receiver Ground (Common with Transmitter Ground)	1
11	VEER	Receiver Ground (Common with Transmitter Ground)	1
12	RD-	Receiver Inverted DATA out. AC Coupled
13	RD+	Receiver Non-inverted DATA out. AC Coupled
14	VEER	Receiver Ground (Common with Transmitter Ground)	1
15	VCCR	Receiver Power Supply
16	VCCT	Transmitter Power Supply
17	VEET	Transmitter Ground (Common with Receiver Ground)	1
18	TD+	Transmitter Non-Inverted DATA in. AC Coupled.
19	TD-	Transmitter Inverted DATA in. AC Coupled.
20	VEET	Transmitter Ground (Common with Receiver Ground)	1

Small Form-factor Pluggable (SFP) Transceiver MultiSource Agreement (MSA)

SFP Host Board Mechanical Layout (Cont.)

Recommended Bezel Design

Ordering Information：

Example
DSFP 3X 24-0 12 LC – 20

Absolute Maximum Ratings：

Recommended Operating Conditions：

Operating Conditions：

1. Transmitter（T=25℃, Vcc=3~3.6V (+3.3V)） 1.25G

Parameter		Symbol			Min.	Typ	Max.	Unit
Center Wavelength		lc	FP OR DFB		1520	1550	1580	nm
					1280	1310	1340
			CWDM		l-6	l(note1)	l₊₆
Spectral width		△l	FP@RMS		-	1	2	nm
			DFB@-20dB FWHM		-	-	1
Side Mode Suppression Ratio		SMSR (DFB only)			30			dB
Output Power	0~20km	1310 FP		Po	-9	-	-3	dBm
	20km	1550 DFB			-9	-	-0
		CWDM			-9	-	-0
	40km	1550 DFB			-5		0
		CWDM			-5		0
	80km	1550 DFB			-3		2
		CWDM			-3		2
Extinction Ratio		ER		1.25G	9		-	dB
Supply Current		ICCT			-		150	mA
Input Differential Impedance		Rin				100		Ω
Data Input Swing Differential		Vin			300		1200	mV
Optical Modulation Amplitude		OMA			174			μW
Transmit Disable Voltage		VD			2.0		Vcc	V
Transmit Enable Voltage		VEN			0		0.8	V
Transmit Disable Assert Time							10	us
Optical Rise/Fall Time		Tr/ Tf (20-80%)				150	260	ps
Deterministic Jitter Contribution		TX ΔDJ					51.7	ps
Total Jitter Contribution		TX ΔTJ					90	ps
Output Optical Eye		IUT-T G.957 Compliant

2.Receiver （T=25℃, Vcc=3~3.6V (+3.3V) 1.25G

Parameter			Symbol		Min.	Typ	Max.	Unit
Wavelength Range			lc		1100		1610	nm
Sensitivity	0~20km	1.25G	Pin	PMIN	-	-24	-23	dBm
	40km		Pin		-	-25	-24
	80km		Pin		-	-27	-26
MAX. Input Power (Saturation)			PMAX		-3	-	-
Signal Detect Assert			PA		-	-	-24
Signal Detect De-assert			PD		-34	-	-
Signal Detect Hysteresis			PHYS		1	-	4
Supply Current			ICCR		-	-	150	mA
Data Output Swing Differential			Vout		400	-	1000	mV
Signal Detect Voltage – High			VSDHC		2.0	-	VCC	V
Signal Detect Voltage – Low			VSDL		0	-	0.8	V