Product Overview
• Form Factor: SFP28, hot-pluggable
• Application: 25GBASE-BiDi 60 km, SANs, and other optical links
• Transmission:
o Data rate: 25.78 Gbps
o Tx: 1290 nm (DFB, uncooled)
o Rx: 1310 nm (APD-TIA)
• Reach: up to 60 km (SMF)
• Connector: Duplex LC
• Power Supply: +3.3 V
• Power Consumption: < 1.5 W
• Temperature Range: 0°C to +70°C
• Compliance: SFF-8431, SFF-8432, SFF-8402, SFF-8472, RoHS-6

Key Features
• Digital Diagnostic Monitoring (DDM) supported
• High sensitivity APD receiver for extended reach
• Compatible with IEEE 802.3cc 25G Ethernet standard
• Hot-swappable in any compliant port

Absolute Maximum Ratings
• Storage Temp: –40 to +85°C
• Supply Voltage: –0.5 to +4.0 V
• Operating Humidity: = 85% RH

Recommended Operating Conditions
• Operating Case Temp: 0 to +70°C
• Power Supply Voltage: 3.13–3.47 V
• Current: = 480 mA
• Max Dissipation: 1.5 W
• Bit Rate: 24.3–26.5 Gbps
• Distance: 60 km

Optical Specifications
Transmitter (1290 nm DFB):
• Wavelength: 1287–1301 nm
• Spectral Width (–20 dB): = 1 nm
• SMSR: = 30 dB
• Output Power: 0 to +6 dBm
• Extinction Ratio: = 4 dB
• Dispersion Penalty: = 2.7 dB
• RIN: = –130 dB/Hz

Receiver (1310 nm APD):
• Wavelength: 1306–1322 nm
• Sensitivity (OMA): = –20 dBm
• Stressed Sensitivity: = –17 dBm
• Overload: = –4 dBm
• LOS Assert: –25 dBm
• LOS De-assert: –23 dBm
• LOS Hysteresis: 0.5–5 dB
• Reflectance: = –26 dB

Electrical Interface
• Input/Output Impedance: 100 O differential
• Input Voltage Swing (Tx): 180–1000 mVpp
• Output Voltage Swing (Rx): 180–1000 mVpp
• TX_DISABLE: >2 V (disable), <0.8 V (enable)
• TX_FAULT: High = fault
• LOS: High = loss of signal

Digital Diagnostics (DDM, SFF-8472)
• Temperature: –5°C (Low Alarm) to +75°C (High Alarm)
• Voltage: 3.0–3.7 V thresholds
• Tx Bias: 10–100 mA thresholds
• Tx Power: –4 to +8 dBm thresholds
• Rx Power: –22 to –3 dBm thresholds