APPLICATIONS

l  Fiber Channel Switch Infrastructure

l  ATM Switches and Routers

l  SONET / SDH Switch

l  Other optical link

Compliance

l  SFP MSA

l  SFF-8472

l  ROHS

PRODUCT SELECTIONS

Ordering information

I.      Pin Diagram

Pinout of Connector Block on Host Board

II.     Pin Descriptions

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.   Absolute Maximum Ratings

Notes:

1.           Non-condensing.

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

(CWDM DFB and APD)

Notes:

1. Measured with Light source 1xx0nm, ER=8.2dB; BER =<10^-12 @PRBS=2^7-1 NRZ

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

V.     Electrical Characteristics (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.  Digital Diagnostic Memory Map

VII.   Digital Diagnostic Monitoring Information

VIII.Recommended Interface Circuit

IX.  Mechanical Dimensions