Features

Bidirectional up to 4.25 Gb/s

data link

Hot-pluggable SFP package

Built-in digital diagnostics

850nm Oxide VCSEL Laser

transmitter

Duplex LC Connector

RoHS compliant and lead free

Up to 500 meters on 50/125 μm MMF,

300 meters on 62.5/125µm MMF

Metal housing to reduce electromagnetic interference

Single 3.3V Supply

Extended operating temperature

Temperature range: -20°C to 85°C

application

Triple rate 1.063/2.125/4.25 Gb/s

Fibre Channel

1.25 Gb/s 1000Base SX Ethernet (rate selectable version) Wireless - Observation, CPR

Finisar's FTLF8524P2xNy Small Form-Factor Pluggable (SFP) transceivers are Small Form Factor Pluggable Multi-Source Agreement (MSA) 1 compatible and they are compatible with Fibre Channel FC-PI-2 versions. 7:02. The optional rate version is also compatible with Gigabit Ethernet as specified in the IEEE 802.33 standard. Optical transceivers comply with RoHS Directive 2011/65/EU. See Finisar application AN-2038 for more details. The digital diagnostic function is available via a 2-wire serial bus specified in the SFP MSA.

1. Pin description

notes:

1. Circuit ground is internally isolated from chassis ground.

2. The laser output is disabled or turned on when TDIS>2.0V, and enabled when TDIS<0.8V.

3. Should be pulled up between 2.0V and 3.6V at 4.7k–10kohms on the motherboard. MOD_DEF(0) pulls the line low, indicating that the module is plugged in.

4. Applicable only for rate optional version: Revised version according to SFF committee draft SFF-8079. Clause 1.6, Table 3. Note that the rate selection can also be set via the 2-wire bus according to the SFF-84725 at bit 3, byte 110, address A2h (note: writing "1" selects full bandwidth operation). The rate select is the logical OR of the rate select pins and the input state of the 2-wire bus. Non-rate selectable versions work at 1x, 2x, 4x Fibre Channel independent of the rate select pin settings.

5.LOS is an open collector output. Should be pulled up between 2.0V and 3.6V at 4.7k–10kohms on the motherboard. Logic 0 indicates normal operation; logic 1 indicates loss of signal.

2. Absolute Maximum Ratings

3. Electrical Characteristics (TA=-20 to 85°C, VCC=3.0 to 3.6V)

notes:

1. Does not condense.

2. Connect directly to the TX data input pin. AC coupling from pins to laser driver chip.

3. For best EMI performance, we recommend <600mV.

4. Or open circuit.

5. Enter 100 ohm differential termination.

6. Unfiltered, 20-80%

7.LOS is an open collector output. Should be pulled up with a 4.7k–10kohms resistor on the motherboard. Normal operation is logic 0; loss of signal is logic 1. The maximum pull-up voltage is 5.5V.

8. Receiver sensitivity conforms to mains sinusoidal modulation 20 Hz to 1.5 MHz to the specified value applied through the recommended mains filtering network.

9. Typical peak-to-peak jitter (=6*RMS jitter width).

10. Measured with no DJ data input signal. In practice, the output DJ is the sum of the input DJs and ∏DJ. If measured with TJ free data input signal. In a practical application, the output TJ will be given by:

5. Optical characteristics (top = -20 to 85°C, VCC = 3.00 to 3.60 volts)

notes:

1. Class 1 laser safety compliant with FDA/CDRH and EN (IEC) 60825 laser safety standards.

2. Fibre Channel Equivalent Extinction Ratio Specification. Lesser ER powers are allowed at higher averages.

3. Unfiltered, 20-80%. Complies with FC 1x and 2x eye masks when filtered.

4. Measured with no DJ data input signal. In practice, the output DJ is the sum of the input DJs and ∏DJ.

5. If measured with TJ free data input signal. In a practical application, the output TJ will be given by:

6. Only applicable to rate selectable version in low bandwidth mode.

7. Specifications apply to 50 micron or 62.5 micron fiber.

8. Measured with 9dB extinction ratio.

9. Measured using the conformance signal defined in the FC-PI-2 version. 7.0 Specification.

10. Measured with conformance signals as defined in the IEEE 802.3 specification.

11. Rate selectable version in low bandwidth mode.

12. Rate optional version in high bandwidth mode.

6. General Specifications

notes:

1.1, 2, 4 Fibre Channel compatible, per FC-PI-2 version. Article 7.0. The rate-selectable version is also gigabit compliant with IEEE802.3 Ethernet.

2.1.0625 Gb/s Fibre Channel data rate, for rate selectable versions, 1.25 Gb/s Gigabit Ethernet data rate.

3. At 2.125 Gb/s Fibre Channel data rate.

4.4.25 Gb/s Fibre Channel data rate

5. 4.25Gb/s with PRB

7. Environmental Specifications

Off-the-shelf 850nm SFP transceivers operate from 20-C to 85-C case temperature.

Page: 1 Regulation Compliance

Terminal transponders are a class of laser products that are regulated by the US FDA. These products are certified by TüV and CSA to meet the class 1 eye safety EN (IEC) 60825 Requirements of EN() 60825 and the electrical safety requirements of EN() IEC 60950. A copy of the certification is available at Finisar Corporation Upon Request.

8. Digital diagnostic function

The Finisar FTLF8524P2xNy SFP transceiver supports the protocol defined in 2-wire serial communication SFP MSA1. It has a very close relationship with the E2 PROM defined in the GBIC standard and has the same electrical specifications. Standard SFP serial numbers provide access to identifying information that describes the transceiver's functionality, standard interface, manufacturer, and other information. Additionally, Finisar SFP transceivers provide an enhanced digital diagnostic monitoring interface that allows real-time access to device operating parameters such as transceiver temperature, laser bias current, transmitted optical power, received optical power supply, and transceiver supply voltage. It also defines a sophisticated system of alarms and warning signs when certain operating parameters are outside the normal ranges set by the factory. The SFP MSA defines a 256-byte memory map in E2 available through a 2-wire serial interface at 8-bit address 1010000X (A0h). The digital diagnostic monitoring interface uses the 8-bit address 1010001X (A2h), so the defined serial ID memory map remains the same.

The interface is therefore fully backward compatible with the GBIC specification and the SFP Multi source protocol. Finisar Application Note - 2030: "Digital Diagnostic Monitoring Interface for SFP Optical Transceivers". Operational and diagnostic information is digitally monitored and reported by the Diagnostic Transceiver Controller (DDTC) within the transceiver, accessible via a 2-wire serial interface. When the serial protocol is activated, the serial clock signal (SCL, Mod Def 1) is generated by the host. Positive edge clock data into the SFP transceiver into these segments of E2 which are not write protected PROM. This clock data from the negative edge of the SFP transceiver. The serial data signal (SDA, ModDef 2) is a bidirectional serial data transmission. The host marks the start and end of serial protocol activation with SDA and SCL. Memory is organized as a series of 8-bit data words that can be addressed individually or sequentially. For more information, see SFP MSA Documents 1, 5 and Finisar Application Note: AN-2030. Note that the evaluation board FDB-1018 can be used with Finisar ModDEMO software that allows simple communication via a 2-wire serial interface.

9. Digital Diagnostics Specification The FTLF8524P2xNy transceiver can be used for digital diagnostics that require internal or external calibration.

notes:

1. The accuracy of the measured Tx bias current is from the laser driver to the laser.

10. Mechanical Specifications

Finisar's Small Form-Factor Pluggable (SFP) transceivers have dimensions defined by the SFP Multiparty Purchase Agreement (MSA).