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    1.25Gbps BIDI Tx1490/Rx1550nm 120km BIDI SFP Transceiver

    1.25Gbps BIDI Tx1490/Rx1550nm 120km BIDI SFP Compatible Transceiver

    1.25Gbps SFP Bi-Directional Transceiver, 120KM Reach, LC Connector SMF Tx1490nm/Rx1550nm, fully tested compatible for over 100 vendors.

    Features

    > Dual data-rate of 1.25Gbps/1.063Gbps operation

    > 160km with 9/125µm SMF

    > 1490/1550nm DFB laser

    > Compliant with SFP MSA and SFF-8472 with duplex LC receptacle

    > Digital Diagnostic Monitoring: Internal Calibration or External Calibration

    > Compatible with RoHS

    > +3.3V single power supply

     

     

    Applications

    > Gigabit Ethernet

    > Fiber Channel

    > Switch to Switch interface

    > Switched backplane application

    > Router/Server interface
    > Other optical transmission systems

     

     

    Description

     The SFPs are small form factor pluggable (SFP) transceivers compatible with multi-sourcing agreement (MSA). It is suitable for single-mode fiber (SMF) communications in 1.25Gbps Ethernet and 1G/2G Fiber Channel.

     

    Regulatory Compliance

    The SFPs are Class 1 Laser Products comply with FDA regulations. Meet Class 1 eye safety requirements of EN 60825 and the electrical safety requirements of EN 60950.

     

    PART NUMBER

    TX/RX

    DISTANCE

    LASER

    TEMPERATURE

    BT-OC24-120A

    1490/1550nm

    120km

    DFB/APD

    COM 0~70℃

    BT-OC24-120AI

    1490/1550nm

    120km

    DFB/ APD

    IND -40~85℃

     

     

    Absolute Maximum Ratings

    Parameter

    Symbol

    Min.

    Max.

    Unit

    Supply Voltage

    VCC

    -0.5

    4.5

    V

    Storage Temperature

    TS

    -40

    85

    °C

    BT-OC24-120A

    Operating Temperature

    TC

    0

    70

    °C

    BT-OC24-120A

    Operating Temperature

    TC

    -40

    85

    °C

     

    Recommended Operating Conditions

    Parameter

    Symbol

    Min.

    Typical

    Max.

    Unit

    ST-OC24-120A

    Operating Temperature

    TC

    0

    70

    °C

    ST-OC24-120AI

    TC

    -40

    85

    °C

    Power Supply Voltage

    VCC

    3.13

    3.3

    3.47

    V

    Power Supply Current

    ICC

    300

    mA

    Data Rate

    1.25

    GBps

    Max Link Length on 9/125µm SMF

    Lmax

    120

    km

     

     

    Optical Characteristics

    Parameter

    Symbol

    Min.

    Typical

    Max.

    Unit

    Transmitter

    Centre Wavelength

    λc

    1470

    1490

    1510

    nm

    Spectral Width (-20dB)

    σ

    1

    nm

    Average Output Power

    Pout

    0

    5

    dBm

    Extinction Ratio

    ER

    9

    dB

    Optical Rise/Fall Time 

    tr/tf

    0.26

    ns

    Receiver

    Centre Wavelength

    λc

    1530

    1550

    1570

    nm

    Receiver Sensitivity

    PIN

    -30

    dBm

    Receiver Overload  

    PMAX

    -9

    dBm

    LOS De-Assert

    LOSD

    -31

    dBm

    LOS Assert

    LOSA

    -37

    dBm

    LOS Hysteresis

    1

    4

    dB

     

     

    Electrical Characteristics

    Parameter

    Symbol

    Min.

    Typical

    Max.

    Unit

    Transmitter

    Input Differential Impedance

    Zin

    90

    100

    110

    Ω

    Data Input Swing Differential

    Vin

    500

    2400

    mV

    Tx-Dis Disable

    Vd

    2.0

    Vcc

    V

    Tx-Dis Enable

    Ven

    0

    0.8

    V

    TX-Fault (Fault)

    2.0

    Vcc+0.3

    V

    TX-Fault (Normal)

    0

    0.8

    V

    Receiver

    Data Output Swing Differential

    Vout

    370

    2000

    mV

    Rx-Los Fault

    Vlf

    2.0

    Vcc+0.3

    V

    Rx-Los Normal

    Vln

    0

    0+0.8

    V

    Pin Descriptions

     

    Pin

    Symbol

    Description

    Ref.

    1

    VEET

    Transmitter Ground  (Common with Receiver Ground)

    6.1

    2

    TFAULT

    Transmitter Fault. Not supported.

     

    3

    TDIS

    Transmitter Disable. Laser output disabled on high or open.

    6.2

    4

    MOD_DEF(2)

    Module Definition 2. Data line for Serial ID.

    6.3

    5

    MOD_DEF(1)

    Module Definition 1. Clock line for Serial ID.

    6.3

    6

    MOD_DEF(0)

    Module Definition 0. Grounded within the module.

    6.3

    7

    Rate Select

    No connection required

     

    8

    LOS

    Loss of Signal indication.  Logic 0 indicates normal operation.

    6.4

    9

    VEER

    Receiver Ground  (Common with Transmitter Ground)

    6.1

    10

    VEER

    Receiver Ground  (Common with Transmitter Ground)

    6.1

    11

    VEER

    Receiver Ground  (Common with Transmitter Ground)

    6.1

    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)

    6.1

    15

    VCCR

    Receiver Power Supply

     

    16

    VCCT

    Transmitter Power Supply

     

    17

    VEET

    Transmitter Ground  (Common with Receiver Ground)

    6.1

    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)

    6.1

     

    Notes:

    * Circuit ground is internally isolated from chassis ground.

    * Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V.

    * 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.

    * 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.

     

     

    EEPROM & DDM THRESHOLD

    EEPROM

    2 wire address 1010000X (A0h)

    0~95  Serial ID Defined by SFP MSA (96 bytes)

    96~127  Vendor Speific (32 bytes)

    128~255  Reserved (128 bytes)

     

    DDM THRESHOLD

     

    Low Alarm

    Low Warn

    High Warn

    High Alarm

    Temp

    BT-OC24-160A

    -45℃

    -40℃

    85℃

    88℃

    Temp

    BT-OC24-160AI

    -10℃

    -6℃

    85℃

    90℃

    Voltage

    3V

    3.1V

    3.5V

    3.6V

    Tx Bias BT-OC24-160A

    15mA

    20mA

    70mA

    75mA

    Tx Bias BT-OC24-160AI

    15mA

    20mA

    120mA

    130mA

    Tx Power

    -4dBm

    -3dBm

    6dBm

    7dBm

    Rx Power

    -32dBm

    -31dBm

    1dBm

    3dBm

     

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