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General Description:

HTF’HTSF-B1M3155Lx Small Form Factor Pluggable (SFP) transceivers are compatible with the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA). The transceiver consists of five sections: the LD driver, the limiting amplifier, the digital diagnostic monitor, the FP laser, and the PIN photo-detector. The module data link up to 20km in 9/125um single mode fiber. The optical output can be disabled by a TTL logic high-level input of Tx Disable, and the system also can disable the module via I2C. Tx Fault is provided to indicate the degradation of the laser. Loss of signal (LOS) output is provided to indicate the loss of an input optical signal from receiver or the link status with partner. The system can also get the LOS (or link) or disable/Fault information via I2C register access.

Features:

Up to 155 MB/s data links
1310nm FP laser transmitter and PIN photo-detector
Up to 20km on 9/125µm SMF
Hot-pluggable SFP footprint
BIDI LC/UPC-type pluggable optical interface
Low power dissipation
Metal enclosure, for lower EMI
RoHS-compliant and lead-free
Support a Diagnostic Monitoring interface
Single +3.3V power supply
Compliant with SFF-8472
Case operating temperature:
- Commercial: 0 ~ +70°C
- Extended: -10 ~ +80°C
- Industrial: -40 ~ +85°C

Applications:

Switch to Switch Interface
Fast Ethernet
Switched Backplane Applications
Router/Server Interface
Other Optical Links

Recommended Operating Conditions and Power Supply Requirements:

Parameter	Symbol	Min	Typical	Max	Unit	Notes
Operating Case Temperature	TOP	0		70	°C	Commercial
		-10		80	°C	Extended
		-40		85	°C	Industrial
Power Supply Voltage	VCC	3.135	3.3	3.465	V
Data Rate			155		Mb/s
Control Input Voltage is high.			2		VCC
Control Input Voltage is low.		0		0.8	V
Link Distance (SMF)	D	20			km	9/125um

Electrical Characteristics:

Parameter	Symbol	Min	Typical	Max	Unit	Notes
Power Consumption	p	0.86		0.95	W	Commercial: 0.86W, Industrial: 0.95W

Supply Current	Icc	260		280	mA	Commercial: 260 mA; Industrial: 280 mA

Transmitter Single-ended Input Voltage Tolerance	VCC	-0.3		4.0	V
Differential Input Voltage Swing	Vin,pp	200		2400	mVpp
Differential Input Impedance	Zin	90	100	110	Ohm
Transmit Disable Assert Time			5		us
Transmit Disable Voltage	Vdis	Vcc-1.3		Vcc	V
Transmit Enable Voltage	Ven	Vee-0.3		0.8	V

Receiver Differential Output Voltage Swing	Vout,pp	500		900	mVpp
Differential Output Impedance	Zout	90	100	110	Ohm
Data output rise/fall time	Tr/Tf	100			ps	20% to 80%
LOS Assert Voltage	VlosH	Vcc-1.3		Vcc	V
LOS De-assert Voltage	VlosL	Vee-0.3		0.8	V

Optical Characteristics:

Parameter	Symbol	Min	Typical	Max	Unit	Notes
Transmitter Center Wavelength	λC	1260	1310	1360	nm
Spectrum Bandwidth (RMS)	σ		3.5		nm
Average Optical Power	PAVG	-15	-7		dBm	1
Optical Extinction Ratio	ER		8.2		dB
Transmitter OFF Output Power	POff	-45			dBm
Receiver Center Wavelength	λC	1500	1550	1600	nm
Receiver Sensitivity (Average Power)	Sen.	-28			dBm	2
Input Saturation Power (overload)	Psat	-8			dBm
LOS Assert	LOSA	-44			dB	3
LOS De-assert	LOSD	-29		dBm	3
LOS Hysteresis	LOSH	0.5	2	6	dB

Digital Diagnostic Functions:

The following digital diagnostic characteristics are defined over the Recommended Operating Environment, unless otherwise specified. It is compliant to SFF8472 Rev10.2 with internal calibration mode. For external calibration, please contact our sales staff.

Parameter	Symbol	Min	Max	Unit	Notes
Temperature monitor: absolute error	DMI_Temp	-3	3	degC	Over operating temperature
Supply voltage monitor absolute error	DMI_VCC	-0.15	0.15	V	Full operating range
RX power monitor: absolute error	DMI_RX	-3	3	dB
The current monitor	DMI_bias	-10%	10%	mA
TX power monitor absolute error	DMI_TX	-3	3	dB