GAOTek GBIC CWDM Transceiver GBICCW-101, up to 1.25 GB/s and 120km

The 1.25 GB GBIC CWDM transceiver is used with Single-mode fiber to span up to 74 Miles (120Km).


Key Features

  • Compliant with SFF-8472
  • Up to 1.25Gb/s data links
  • DFB laser transmitter and PIN photo-detector
  • Up to 74.5 Miles(120Km) on 9/125µm SMF
  • GBIC footprint
  • Duplex SC/UPC type pluggable optical interface
  • Low power dissipation
  • Metal enclosure, for lower EMI
  • RoHS compliant and lead-free
  • Single +5V power supply
  • Case operation Temperature range from 32°F to +158°F(0°C to +70°C)



Technical Specifications

Working RangeUp to 74.5 Miles(120Km)
Data rate1.25Gb/s
Transmitter Off Output Power-45dBm
Receiver Sensitivity-29dBm
Receiver Input Saturation Power(Overload)-10dBM
Supply Voltage0-6V
Transmitter Differential Line Input Impedance90-110Ω
Dimensions2.2in*1.08in*0.46 in                                                 (L 57.1mm*W 27.6mm*H 11.9mm)
Relative Humidity5% to 95%
Storage Temperature-40°F to 185°F (-40°C to 85°C)
Case Operating Temperature32°F to +158°F (0°C to 70°C)



Product Selection:

PIN Descriptions:

PinSymbolI/O TypeFunctional Description
1.RX_LOSOutputReceiver Loss of Signal, Logic high, Open collector compatible 4.7K to 10K Ohm pulls up to VDDT on host.
2.RGNDReceiver Ground
3.RGNDReceiver Ground
4.MOD_DEF(0)OutputModule Definition 0 TTL Low
5.MOD_DEF(1)InputModule Definition 1 Two wire serial ID interface SCL, 4.7K to 10K Ohm pull up to VDDT on host
6.MOD_DEF(2)I/OModule Definition 2 Two wire serial ID interface SDA, 4.7K to 10K Ohm pull up to VDDT on host
7.TX_DISABLEInputTransmitter Disable – Module disable on high or open (No Used)
8.TGNDTransmitter Ground
9.TGNDTransmitter Ground
10.TX_FAULTOutputTransmitter Fault Indication, Logic high, open collector Compatible , 4.7K to 10K Ohm pull up to VDDT on host
11.RGNDReceiver Ground
12.-RX_DATOutputInverse Received Data Out, Differential PECL, at AC couple
13.+RX_DATOutputReceived Data Out, Differential PECL, at AC couple
14.RGNDReceiver Ground
15.VDDRInputReceiver Power
16.VDDTInputTransmitter Power
17.TGNDTransmitter Ground
18.+TX_DATInputTransmitter Data In, Differential PECL, AC couple
19.-TX_DATInputInverse Transmitter Data In, Differential PECL, AC couple
20.TGNDTransmitter Ground

Electrical Interface Characteristics

Total Supply CurrentICCAmANote(1)
Transmitter Disable Input-HighVDISH2Vcc+0.3V
Transmitter Disable Input-LowVDISL00.8V
Transmitter Fault Input-HighVDISL2Vcc+0.3V
Transmitter Fault Input-LowVTxFH00.8V 
Total Supply CurrentIccBmANote(1)
LOSS Output Voltage-HighVLOSH2Vcc+0.3VLVTTL
LOSS Output Voltage-LowVLOSL00.8V

Note (1): A (TX) + B (RX) = 300mA (Not include termination circuit)


  • Switch to Switch Interface
  • Gigabit Ethernet
  • Switched Backplane Applications
  • Router/Server Interface
  • Other Optical Links


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