2.5G SFP

产品概述

Pinout of Connector Block on Host Board

II.  引用说明

Notes:

1. VeeR and VeeT may be internally connected within the SFP module.

2. TX Fault is an open collector/drain output, which should be pulled up with a 4.7K-10KΩ

resistor on the host board. Pull up voltage between 2.0V and 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.

3. TX disable is an input that is used to shut down the transmitter optical output. It is pulled up within the module with a 4.7-10 KΩ resistor. Its states are:

Low (0 – 0.8V): Transmitter on

(>0.8, < 2.0V): Undefined

High (2.0 – 3.465V): Transmitter Disabled

Open: Transmitter Disabled

4. Mod-Def 0, 1,2. These are the module definition pins. They should be pulled up with a 4.7K-10KΩ resistor on the host board. The pull-up voltage shall be VccT or VccR

Mod-Def 0 is grounded by the module to indicate that the module is present

Mod-Def 1 is the clock line of two wire serial interface for serial ID

Mod-Def 2 is the data line of two wire serial interface for serial ID

5. VeeR and VeeT may be internally connected within the SFP module.

6.  RD-/+: These are the differential receiver outputs. They are AC coupled 100Ω differential

lines which should be terminated with 100Ω (differential) at the user SERDES. The AC coupling is done inside the module and is thus not required on the host board. The voltage swing on these lines will be between 400 and 2000 mV differential (200 – 1000 mV single ended) when properly terminated.

7. VccR and VccT are the receiver and transmitter power supplies. They are defined as 3.3V

±5% at the SFP connector pin. Maximum supply current is 300mA. Recommended host board  power supply filtering is shown below. Inductors with DC resistance of less than 1 ohm should   be used in order to maintain the required voltage at the SFP input pin with 3.3V supply voltage. When the recommended supply-filtering network is used, hot plugging of the SFP transceiver module will result in an inrush current of no more than 30Ma greater than the steady state value.

8. VccR and VccT may be internally connected within the SFP transceiver module.

TD-/+: These are the differential transmitter inputs. They are AC-coupled, differential lines with  100Ω differential termination inside the module. The AC coupling is done inside the module and is thus not required on the host board. The inputs will accept differential swings of 400-2000mV (200 -1000mV single-ended).

III. 极限参数

Notes:

1. Non-condensing.

IV. 光学特性 (TOP = 0°C to 70°C, VCC = 3.3 ± 5% Volts)

(CWDM DFB and APD, 29dB)

Notes:

1. Measured with Light source 1xx0nm, ER=9dB; BER =<10^- 12 @PRBS=2^7-1 NRZ

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

V. 电气特性 (TOP = 0°C to 70°C, VCC = 3.3 ± 5% Volts)

Notes:

1. Connected directly to TX data input pins.AC coupling from pins into laser driver IC.

2. LVPECL logic, internally AC coupled.

3. Loss Of Signal is LVTTL. Logic 0 indicates normal operation; logic 1 indicates no signal detected.

VI. 数字诊断图

VII. 数字诊断监控信息

VIII. 推荐电路图

IX. 机械规格

SFP wire mechanical drawing (Unit: mm)

产品特性

 Up to 2.488Gbps Data Links

 18-Wavelength CWDM DFB LD Transmitter from

1270nm to 1610nm, with Step 20nm

 Maximum link length of 80km on 9/125um SMF

 Hot-Pluggable SFP Footprint Duplex LC Connector Interface

 Class 1 FDA and IEC60825-1 Laser Safety Compliant

 Compliant with SFP MSA Specification

 Compliant with SFF-8472 Digital Diagnostic Monitor Interface

 Single +3.3V power supply and TTL Control Logic Interface

 Compliant with SFF-8472

 Safety Certification: TUV/UL/FDA

 RoHS Compliant

 Operating Case Temperature: Commercial: 0℃~+70℃ Extended: -20℃~+85℃

技术规格

 Ordering Information