China Manufacturer Transceiver Optical SFP Module Fiber Optic Sc 1.25g Bidi SFP 20km

• Type: Both Wired and Wireless
• Certification: CE, ISO, RoHS, FCC
• Condition: New
• Transport Package: Blister Pack
• Trademark: Linksall
• Origin: China
• Model NO.: LAS25-C1310S-20A
• HS Code: 8517706000
• Production Capacity: 100, 000 Per Year

Product Description

 1.25Gb/s SFP Optical Transceiver with DDMI Hot Pluggable, Duplex LC, +3.3V, 1310nm, FP-LD, Single-Mode, 20km
 

1. Features

                                           

• Compliant with Specifications for IEEE802.3Z
• Multi-Source Package with Duplex LC Connector
• Up to 1.25Gb/s Data Links
• Single Mode 1310nm FP-LD
• Single +3.3V Power Supply
• Hot-Pluggable
• Compliant with Bellcore TA-NWT-000983
• Eye Safety Designed to Meet Laser Class1, Compliant with IEC60825-1

• RoHS Compliant Products

 

1. Applications

 

• Gigabit Ethernet
• 1x Fiber Channel
• Switch to Switch Interface
• Switched Backplane Applications
• Router/Server Interface
• Other Optical Links

 

1. Specification

 

• Electrical and Optical Characteristics: (Condition: Ta=TOP)

Parameter	Symbol	Min.	Typical	Max.	Unit
Transmitter Differential Input Volt	+/-TX_DAT	200		2400	mV p-p
Supply Current	ICC		130	180	mA
Tx_Disable Input Voltage - Low	VIL	0		0.8	V
Tx_Disable Input Voltage - High	VIH	2.0		Vcc	V
Tx_Fault Output Voltage - Low	VOL	0		0.8	V
Tx_Fault Output Voltage - High	VOH	2.0		Vcc	V
Receiver Differential Output Volt	+/-RX_DAT	600		1400	mV p-p
Rx_LOS Output Voltage- Low	VOL	0		0.8	V
Rx_LOS Output Voltage- High	VOH	2.0		Vcc	V

 

• Transmitter Section

Parameter	Symbol	Min.	Typical	Max.	Unit
Data Rate	B	-	1250	-	Mb/s
Centre Wavelength	λc	1296	1310	1330	nm
Output Spectral Width	△λ	-	-	4	nm
Average Output Power	Po	-9	-	-3	dBm
Extinction Ratio	EXT	9	-	-	dB
Data Input Voltage-High	VIHS	Vcc-1.16	-	Vcc-0.89	V
Data Input Voltage -Low	VILS	Vcc-1.82	-	Vcc-1.48	V
Supply Current	ICC	-	90	150	mA
Output Optical Eye	Compliant with IEEE802.3Z
Receiver Section:
Parameter	Symbol	Min.	Typical	Max.	Unit
Receive Sensitivity	Pmin	-	-	-25	dBm
Maximum Input Power	PMAX	-3	-	-	dBm
Signal Detect Threshold-De-Assert	SD	-	-	-23	dBm
Signal Detect Threshold-Assert	SA	-33	-	-	dBm
Hysteresis	-	-	2.0	-	dBm
Output High Voltage	VOH	Vcc-1.03	-	Vcc-0.89	V
Output Low Voltage	VOL	Vcc-1.82	-	Vcc-1.63	V
Operating Wavelength	λc	1100	-	1600	nm
Supply Current	ICC	-	80	110	mA

 

• Absolute Maximum Ratings: (TC=25ºC)

Parameter	Symbol	Remarks	Min.	Max.	Unit
Storage Temperature	TST	-	-40	+85	ºC
Operating Temperature	TIP	X=1	0	+70	ºC
		X=2	-40	+85	ºC
Input Voltage	TCC	-	0	+5	V

 

• Recommended Operating Environment

Parameter	Symbol	Remarks	Min.	Typical	Max.	Unit
Supply Voltage	VCC	-	+3.0	+3.3	+3.6	V
Operating Temperature	TOP	X=1	0	-	+70	ºC
		X=2	-40	-	+85	ºC

 

• Timing Characteristics

Parameter	Symbol	Min.	Typical	Max.	Unit
TX_DISABLE Assert Time	t_off		3	10	usec
TX_DISABLE Negate Time	t_on		0.5	1	msec
Time to initialize include reset of TX_FAULT	t_int		30	300	msec
TX_FAULT from fault to assertion	t_fault		20	100	usec
TX_DISBEL time to start reset	t_reset	10			usec
Receiver Loss of Signal Assert Time (off to On)	TA,RX_LOS			100	usec
Receiver Loss of Signal Assert Time (on to off)	Td,RX_LOS			100	usec

          
 

1. Pin Description

 

Pin	Symbol	Name/Description	Ref
1	VEET	Transmitter Ground (Common with Receiver Ground)	1
2	TFAULT	Transmitter Fault. Low normal operation, High Fault indication
3	TDIS	Transmitter Disable. Laser output disabled on high or open	2
4	MOD_DEF(2)	Module Definition 2.Data line for Serial ID	3
5	MOD_DEF(1)	Module Definition 1.Clock line for Serial ID	3
6	MOD_DEF(0)	Module Definition 0.Grounded within the moudle	3
7	Rate Select	No connection required
8	LOS	Loss of Signal indication. Logic 0 indicates normal operation.	4
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

Notes:
1). Circuit ground is internally isolated from chassis ground.
2). Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V.
3). Should be pulled up with 4.7k - 10kohms on host board to a voltage between 2.0V and 3.6V. MOD_DEF(0) pulls line
   low to indicate module is plugged in.

1. . LOS is open collector output. Should be pulled up with 4.7k - 10kohms on host board to a voltage between 2.0V and

       3.6V.Logic 0 indicates normal operation; logic 1 indicates loss of signal.
 

1. Serial ID Memory Contents

 

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	Gigabit Ethernet 1000Base-SX & Fiber Channel
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: "LAS24-xxxxxx" (ASCII)
56-59	4	Vendor rev	Revision level for part number
60-61	2	Wavelength	Laser wavelength
62	1	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

 

1. Serial ID Memory Contents: (A2H)

 

Address	Bytes	Name	Description
00-01	2	Temp High Alarm	MSB at low address
02-03	2	Temp Low Alarm	MSB at low address
04-05	2	Temp High Warning	MSB at low address
06-07	2	Temp Low Warning	MSB at low address
08-09	2	Voltage High Alarm	MSB at low address
10-11	2	Voltage Low Alarm	MSB at low address
12-13	2	Voltage High Warning	MSB at low address
14-15	2	Voltage Low Warning	MSB at low address
16-17	2	Bias High Alarm	MSB at low address
18-19	2	Bias Low Alarm	MSB at low address
20-21	2	Bias High Warning	MSB at low address
22-23	2	Bias Low Warning	MSB at low address
24-25	2	TX Power High Alarm	MSB at low address
26-27	2	TX Power Low Alarm	MSB at low address
28-29	2	TX Power High Warning	MSB at low address
30-31	2	TX Power Low Warning	MSB at low address
32-33	2	RX Power High Alarm	MSB at low address
34-35	2	RX Power Low Alarm	MSB at low address
36-37	2	RX Power High Warning	MSB at low address
38-39	2	RX Power Low Warning	MSB at low address
40-55	16	Reserved	Reserved for future monitored quantities
56-59	4	Rx_PWR(4)	Single precision floating point calibration data - Rx optical power. Bit 7 of byte 56 is MSB. Bit 0 of byte 59 is LSB.
60-63	4	Rx_PWR(3)	Single precision floating point calibration data - Rx optical power. Bit 7 of byte 60 is MSB. Bit 0 of byte 63 is LSB.
64-67	4	Rx_PWR(2)	Single precision floating point calibration data - Rx optical power. Bit 7 of byte 64 is MSB, bit 0 of byte 67 is LSB.
68-71	4	Rx_PWR(1)	Single precision floating point calibration data - Rx optical power. Bit 7 of byte 68 is MSB, bit 0 of byte 71 is LSB.
72-75	4	Rx_PWR(0)	Single precision floating point calibration data - Rx optical power. Bit 7 of byte 72 is MSB, bit 0 of byte 75 is LSB.
76-77	2	Tx_I(Slope)	Fixed decimal (unsigned) calibration data, laser bias current. Bit 7 of byte 76 is MSB, bit 0 of byte 77 is LSB.
78-79	2	Tx_I(Offset)	Fixed decimal (signed two's complement) calibration data, laser bias current. Bit 7 of byte 78 is MSB, bit 0 of byte 79 is LSB
80-81	2	Tx_PWR(Slope)	Fixed decimal (unsigned) calibration data, transmitter coupled output power. Bit 7 of byte 80 is MSB, bit 0 of byte81 is LSB.
82-83	2	Tx_PWR(Offset)	Fixed decimal (signed two's complement) calibration data, transmitter coupled output power. Bit 7 of byte 82 is MSB, bit 0 of byte 83 is LSB.
84-85	2	T(Slope)	Fixed decimal (unsigned) calibration data, internal module temperature. Bit 7 of byte 84 is MSB, bit 0 of byte 85 is LSB.
86-87	2	T(Offset)	Fixed decimal (signed two's complement) calibration data, internal module temperature. Bit 7 of byte 86 is MSB, bit 0 of byte 87 is LSB.
88-89	2	V(Slope)	Fixed decimal (unsigned) calibration data, internal module supply voltage. Bit 7 of byte 88 is MSB, bit 0 of byte 89 is LSB.
90-91	2	V(Offset)	Fixed decimal (signed two's complement) calibration data, internal module supply voltage. Bit 7 of byte 90 is MSB. Bit 0 of byte 91 is LSB.
92-95	4	Reserved	Reserved

 

Byte		Bit		Name	Description
Converted analog values. Calibrated 16 bit data
96		All		Temperature MSB	Internally measured module temperature.
97		All		Temperature LSB
98		All		Vcc MSB	Internally measured supply voltage in transceiver.
99		All		Vcc LSB
100		All		TX Bias MSB	Internally measured TX Bias Current.
101		All		TX Bias LSB
102		All		TX Power MSB	Measured TX output power.
103		All		TX Power LSB
104		All		RX Power MSB	Measured RX input power.
105		All		RX Power LSB
106		All		Reserved MSB	Reserved for 1st future definition of digitized analog input
107		All		Reserved LSB	Reserved for 1st future definition of digitized analog input
108		All		Reserved MSB	Reserved for 2nd future definition of digitized analog input
109		All		Reserved LSB	Reserved for 2nd future definition of digitized analog input
Optional Status/Control Bits
110		7		TX Disable State	Digital state of the TX Disable Input Pin. Not supported.
110		6		Soft TX Disable	Read/write bit that allows software disable of laser.Not supported.
110		5		Reserved
110		4		RX Rate Select State	Digital state of the SFP RX Rate Select Input Pin.Not supported.
110		3		Soft RX Rate Select	Read/write bit that allows software RX rate select.Not supported.
110		2		TX Fault	Digital state of the TX Fault Output Pin.
110		1		LOS	Digital state of the LOS Output Pin.
110		0		Data Ready	Indicates transceiver has achieved power up and data is ready
111		7-0		Reserved	Reserved.
Reserved Optional Alarm and Warning Flag Bits
112	7		Temp High Alarm			Set when internal temperature exceeds high alarm level.
112	6		Temp Low Alarm			Set when internal temperature is below low alarm level.
112	5		Vcc High Alarm			Set when internal supply voltage exceeds high alarm level.
112	4		Vcc Low Alarm			Set when internal supply voltage is below low alarm level.
112	3		TX Bias High Alarm			Set when TX Bias current exceeds high alarm level.
112	2		TX Bias Low Alarm			Set when TX Bias current is below low alarm level.
112	1		TX Power High Alarm			Set when TX output power exceeds high alarm level.
112	0		TX Power Low Alarm			Set when TX output power is below low alarm level.
113	7		RX Power High Alarm			Set when Received Power exceeds high alarm level.
113	6		RX Power Low Alarm			Set when Received Power is below low alarm level.
113	5		Reserved Alarm
113	4		Reserved Alarm
113	3		Reserved Alarm
113	2		Reserved Alarm
113	1		Reserved Alarm
113	0		Reserved Alarm
114	All		Reserved
115	All		Reserved
116	7		Temp High Warning			Set when internal temperature exceeds high warning level.
116	6		Temp Low Warning			Set when internal temperature is below low warning level.
116	5		Vcc High Warning			Set when internal supply voltage exceeds high warning level.
116	4		Vcc Low Warning			Set when internal supply voltage is below low warning level.
116	3		TX Bias High Warning			Set when TX Bias current exceeds high warning level.
116	2		TX Bias Low Warning			Set when TX Bias current is below low warning level.
116	1		TX Power High Warning			Set when TX output power exceeds high warning level.
116	0		TX Power Low Warning			Set when TX output power is below low warning level.
117	7		RX Power High Warning			Set when Received Power exceeds high warning level.
117	6		RX Power Low Warning			Set when Received Power is below low warning level.
117	5		Reserved Warning
117	4		Reserved Warning
117	3		Reserved Warning
117	2		Reserved Warning
117	1		Reserved Warning
117	0		Reserved Warning
118	All		Reserved
119	All		Reserved

 

Byte	# Byte	Name	Description
120-127	8	Vendor Specific	00h.
128-255	128		Writable Memory