FCBG125SD1C20 Finisar

Product Specification 25G SFPwire , SFP+ Active Optical Cable FCBG125SD1Cxx PRODUCT FEATURES Hot-pluggable SFP+ cable ends Supports 25.7813 Gb/s bit rate SFI limiting interface Input equalization and output emphasis controls Single 3.3V power supply Low power dissipation APPLICATIONS 0C to 70C Temperature range 25G Ethernet for Intra- and Inter-Rack Rigid pull-tab datacenter interconnection Finisar 25G SFPwire , FCBG125SD1Cxx, are SFP+ Active Optical Cables designed for use in 25G Ethernet links. The electrical interface of Finisar 25G SFPwire is [1] compliant with SFF-8431 , and the receiver side is limiting. Finisar 25G SFPwire provide non-adaptive input equalization and output emphasis [2] controls as per SFF-8472 . The mechanical specifications of the 25G SFPwire SFP+ [3] ends are compatible with SFF-8432 . [4,5] Finisar 25G SFPwire are RoHS compliant per Directive 2011/65/EU . PRODUCT SELECTION Cable Length Options (Orange Jacket Cables) xx = Z5 0.5m xx = 05 5m xx = 01 1.0m xx = 07 7m xx = A5 1.5m xx = 09 9m FCBG125SD1Cxx xx = 02 2.0m xx = 10 10m xx = B5 2.5m xx = 15 15m xx = 03 3.0m xx = 20 20m xx = C5 3.5m xx = 30 30m Please contact Finisar for Aqua-color jacket or custom length options. Finisar Corporation November 2017 Rev. B1 Page 1 FCBG125SD1Cxx Product Specification I. Pin Descriptions Pin Symbol Name/Description Ref. 1 V Transmitter Ground (Common with Receiver Ground) 1 EET 2 T Transmitter Fault. 2,3 FAULT 3 T Transmitter Disable. Laser output disabled on high or open. 4 DIS 4 SDA 2-wire Serial Interface Data Line 2 5 SCL 2-wire Serial Interface Clock Line 2 6 MOD_ABS Module Absent. Grounded within the module 5 7 RS0 No connection required 8 RX_LOS Loss of Signal indication. Logic 0 indicates normal operation. 6 9 RS1 No connection required 10 V Receiver Ground (Common with Transmitter Ground) 1 EER 11 V Receiver Ground (Common with Transmitter Ground) 1 EER 12 RD- Receiver Inverted DATA out. AC Coupled 13 RD+ Receiver Non-inverted DATA out. AC Coupled 14 V Receiver Ground (Common with Transmitter Ground) 1 EER 15 V Receiver Power Supply 7 CCR 16 V Transmitter Power Supply 7 CCT 17 V Transmitter Ground (Common with Receiver Ground) 1 EET 18 TD+ Transmitter Non-Inverted DATA in. AC Coupled. 19 TD- Transmitter Inverted DATA in. AC Coupled. 20 V Transmitter Ground (Common with Receiver Ground) 1 EET Notes: 1. Circuit ground is internally isolated from chassis ground. 2. Open collector/drain output, which should be pulled up with a 4.7k 10k Ohms resistor on the host board if intended for use. Pull up voltage should be between 2.0V to Vcc + 0.3V. 3. A high output indicates a transmitter fault caused by either the TX bias current or the TX output power exceeding the preset alarm thresholds. A low output indicates normal operation. In the low state, the output is pulled to <0.8V. 4. Laser output disabled on T >2.0V or open, enabled on T <0.8V. DIS DIS 5. Internally pulled down per SFF-8431 Rev 4.1. 6. LOS is open collector output. Should be pulled up with 4.7k 10k on host board to a voltage between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal. 7. Internally connected. VeeT 20 VeeT 1 TD- 19 TX_Fault 2 TD+ 18 TX_Disable 3 VeeT 17 4 SDA VccT 16 5 SCL Towards VccR 15 Towards 6 MOD_ABS Bezel ASIC VeeR 14 7 RS0 RD+ 13 8 RX_LOS RD- 12 9 RS1 VeeR 11 10 VeeR Figure 1. Diagram of Host Board Connector Block Pin Numbers and Names. Finisar Corporation - November 2017 Rev. B1 Page 2