LPGCSB53(F35)-K20C(I)

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Product Detail

APPLICATIONS

l Switch to Switch Interface

l Fast Ethernet

l Switched Backplane Applications

l Router/Server Interface

l Other Optical Links

Compliance

l SFP MSA

l SFF-8472

l ROHS

l IEEE802.3z

Ordering information

Part No.	Bit Rate (Gbps)	Laser (nm)	Distance（km）	Fiber Type	DDMI	Connector	Temp
ESGCSB53-K20C	1.25	1550	20	SMF	YES	LC	0℃~70℃
ESGCSB53-K20I	1.25	1550	20	SMF	YES	LC	-40℃~85℃
ESGCSF35-K20C	1.25	1310	20	SMF	YES	LC	0℃~70℃
ESGCSF35-K20I	1.25	1310	20	SMF	YES	LC	-40℃~85℃

I. Pin Diagram

Pinout of Connector Block on Host Board

II. Pin Descriptions

Pin	Symbol	Name/Description	Ref.
1	V_EET	Transmitter Ground (Common with Receiver Ground)	1
2	T_FAULT	Transmitter Fault.	2
3	T_DIS	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	V_EER	Receiver Ground (Common with Transmitter Ground)	1
10	V_EER	Receiver Ground (Common with Transmitter Ground)	1
11	V_EER	Receiver Ground (Common with Transmitter Ground)	1
12	RD-	Receiver Inverted DATA out (CML). AC Coupled
13	RD+	Receiver Non-inverted DATA out (CML). AC Coupled
14	V_EER	Receiver Ground (Common with Transmitter Ground)	1
15	V_CCR	Receiver Power Supply
16	V_CCT	Transmitter Power Supply
17	V_EET	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	V_EET	Transmitter Ground (Common with Receiver Ground)	1

Notes:

1. Circuit ground is internally isolated from chassis ground.

2. TX Fault is an open drain output, which should be pulled up with 4.7K – 10KΩ resistor on the host board. Pull up voltage between 2.0V to VccT/R+0.3V. When high, output indicates a laser fault of some kind. Low indicates normal operation. In the low state, the output will be pulled to < 0.8V. When sensing an improper power level in the laser driver, the SFP sets this signal high and turns off the laser. TX-FAULT can be reset with the TX-DISABLE line. The signal is in LVTTL level.

3.TX disable is an input that is used to shut down the transmitter optical output. It is pulled up within the module with 4.7K – 10KΩ resistor. Its states are: Low (0 – 0.8V): Transmitter on; (>0.8, < 2.0V): Undefined; High (2.0V to VccT/R+0.3V): Transmitter Disabled; Open: Transmitter Disabled. The TX-DISABLE signal is high (LVTTL logic “1”) to turn off the laser output. The laser will turn on when TX-DISABLE is low (LVTTL logic “0”).

4. Should be pulled up with 4.7K - 10KΩ on host board to a voltage between 2.0V to VccT/R+0.3V. MOD_DEF (0) pulls line low to indicate module is plugged in.

5. LOS (Loss of Signal) is an open collector/drain output, which should be pulled up with 4.7K – 10KΩ resistor. Pull up voltage between 2.0V to VccT/R+0.3V. When high, this output indicates the received optical power is below the worst-case receiver sensitivity (as defined by the standard in use). Low indicates normal operation. In the low state, the output will be pulled to < 0.8V.

The RX-LOS is high (LVTTL logic “1”) when there is no incoming light from the companion transceiver. This signal is normally used by the system for the diagnostic purpose. The signal is operated in LVTTL level.

III. Absolute Maximum Ratings

Parameter	Symbol	Min	Type	Max	Unit	Ref.
Storage Temperature	T_S	-40		85	ºC
Storage Ambient Humidity	H_A	5		95	%
Power Supply Voltage Signal Input Voltage	V_CC	-0.5		4	V V
Power Supply Voltage Signal Input Voltage	V_CC	-0.3		Vcc+0.3	V V
Receiver Damage Threshold		+3			dBm
Lead Soldering Temperature/Time	TSOLD			260/10	ºC/sec	1
Lead Soldering Temperature/Time	TSOLD			360/10	ºC/sec	2

Notes:

1.Suitable for wave soldering.

2.Only for soldering by iron.

IV. Recommended Operating Conditions (TOP = 0°C to 70°C, VCC = 3.3 ± 5% Volts)

Parameter	Symbol	Min.	Typ.	Max.	Unit	Ref.
Case Operating Temperature	T_case	0		70	ºC	ESGCSB53(F35)-K20C
		-20		85		ESGCSB53(F35)-K20E
		-40		85		ESGCSB53(F35)-K20I
Ambient Humidity	H_A	5		70	%	Non-condensing
Power Supply Voltage	V_CC	3.13	3.3	3.47	V
Power Supply Current	I_CC			280	mA
Data Rate			1250/1250		Mbps	TX Rate/RX Rate
Transmission Distance				20	km
Coupled Fiber	Single mode fiber					9/125um G.652

V. Optical Characteristics (TOP = 0°C to 70°C, VCC = 3.3 ± 5% Volts)

Parameter	Symbol	Min.	Typ.	Max.	Unit	Remark
Transmitter
Average Output Power	P_OUT	-9		-3	dBm	ESGCLF35(B53)
Extinction Ratio	ER	9			dB
Center Wavelength	λC	1260	1310	1360	nm	ESGCLF35
Center Wavelength	λC	1530	1550	1570	nm	ESGCLB53
Spectrum Width (RMS)	σ			3.5	nm	FP Laser (TX:1310nm)
Side Mode Suppression Ratio	SMSR	30			dB	DFB Laser (TX:1550nm)
Spectrum Bandwidth(-20dB)	σ			1	nm	DFB Laser (TX:1550nm)
Transmitter OFF Output Power	POff			-45	dBm
Jitter p-p	tJ			0.1	UI	1
Output Eye Mask	Compliant with IEEE802.3z (class 1 laser safety)					2
Receiver
Input Optical Wavelength	λ_IN	1500	1550	1600	nm	ESGCLF35
Input Optical Wavelength	λ_IN	1290	1310	1330	nm	ESGCLB53
Receiver Sensitivity	PIN			-23	dBm	3
Input Saturation Power (Overload)	PSAT			-3	dBm
LOS of Signal Assert	PA	-45			dBm
LOS of Signal De-assert	PD			-24	dBm	4
LOS Hysteresis	PD-PA	0.5			dB

Notes:

1.Measure at 2^7-1 NRZ PRBS pattern.

2.Transmitter eye mask definition.

3. Measured with Light source 1550nm(1310nm), ER=9dB; BER =<10^-12 @PRBS=2^7-1 NRZ.

4.When LOS De-asserted, the RX data+/- output is signal output.

VI. Electrical Characteristics(TOP = 0°C to 70°C, VCC = 3.3 ± 5% Volts)

Parameter	Symbol	Min.	Typ.	Max.	Unit	Ref.
*Transmitter*
Total Supply Current	ICC			300	mA	1
Transmitter Disable Input-High	VDISH	2		Vcc+0.3	V	LVTTL
Transmitter Disable Input-Low	VDISL	0		0.8	V
Transmitter Fault Input-High	VTxFH	2		Vcc+0.3	V
Transmitter Fault Input-Low	VTxFL	0		0.8	V
*Receiver*
Total Supply Current	ICC			B	mA	1
LOS Output Voltage-High	VLOSH	2		Vcc+0.3	V	LVTTL
LOS Output Voltage-Low	VLOSL	0		0.8	V	LVTTL

Notes:

1.A (TX) + B (RX) = 280mA (Not include termination circuit).

VII. Digital Diagnostic Memory Map

VIII.Digital Diagnostic Monitoring Information

Parameter	Unit	Accuracy
Case Temperature	℃	±3
Supply Voltage	V	±3%
Tx Bias Current	mA	±10%
Tx Optical Power	dB	±3
Rx Optical Power	dB	±3

IX. Recommended Interface Circuit

X. Mechanical Dimensions

SFP wire mechanical drawing (Unit: mm)

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contact us

Address : East of 2F, Tianmen Optical Valley Science Park,Qiaoxiang Economic development area,Tianmen, Hubei Province.
Tel : 15012662571
Email : chris.peng@talptech.com
Skype : 15012662571

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