FTLF1436P4BCL

Product Specification 25G Ethernet RoHS Compliant Long Wavelength SFP28 Transceiver FTLF1436P4BCL PRODUCT FEATURES • Up to 25.78 Gb/s bi-directional data links • Hot-pluggable SFP28 footprint • Built-in digital diagnostic functions • 1310nm DFB laser transmitter • Duplex LC connector • RoHS compliant • Up to 10 km on 9/125µm SMF • Metal enclosure, for lower EMI • 1.5W maximum power consumption with established link • Single 3.3V power supply • Operating temperature range: APPLICATIONS 25GE LR 0°C to 70°C Finisar’s FTLF1436P4BCL SFP28 transceivers are designed for use in Ethernet links up to 25.78 Gb/s data rate and up to 10 km link length. They are compliant SFF-8472 Rev 12.2b, and compatible with SFF-8432a and applicable portions of SFF-8431 Rev. 3.0c. The optical transceiver is compliant per RoHS Directive 2011/65/EUe. See Finisar Application Note AN-2038 for more details. PRODUCT SELECTION FTLF1436P4BCL  Finisar Corporation – March 2020 Rev A1 Finisar Confidential Page 1 FTLF1436P4BCL Product Specification I. Pin Descriptions Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Symbol VEET TFAULT TDIS SDA SCA MOD_ABS RS0 LOS RS1 VEER VEER RDRD+ VEER VCCR VCCT VEET TD+ TDVEET Name/Description Transmitter Ground (Common with Receiver Ground) Transmitter Fault. Transmitter Disable. Laser output disabled on high or open. 2-wire Serial Interface Data Line (MOD-DEF2) 2-wire Serial Interface Clock (MOD-DEF1) Module Absent, connected to VEET or VEER Rx Rate Select: No Connect Loss of Signal indication. Logic 0 indicates normal operation. Tx Rate Select: No Connect Receiver Ground (Common with Transmitter Ground) Receiver Ground (Common with Transmitter Ground) Receiver Inverted DATA out. AC Coupled Receiver Non-inverted DATA out. AC Coupled Receiver Ground (Common with Transmitter Ground) Receiver Power Supply Transmitter Power Supply Transmitter Ground (Common with Receiver Ground) Transmitter Non-Inverted DATA in. AC Coupled. Transmitter Inverted DATA in. AC Coupled. Transmitter Ground (Common with Receiver Ground) Ref. 1 2 3 4 4 4 5 6 5 1 1 1 1 1 Notes: 1. Circuit ground is internally isolated from chassis ground. 2. TFAULT is an 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. 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 2.0V or open, enabled on TDIS