General Description SFP+ Direct Attach Cables are compliant with the SFF-8431, SFF-8432 and SFF-8472 specifications. Various choices of wire gauge are available from 30 to 24 AWG with various choices of cable length (up to 7m). Features ◊ Compliant with SFF-8431, 8432 and 8472. ◊ Up to 10.3125Gbps data rate per channel ◊ Up to 7m transmission ◊ Operating temperature:-40℃ to +80℃ ◊ Single 3.3V power supply ◊ RoHS compliant Benefits ◊ Cost-effective copper solution ◊ Lowest total system power solution ◊ Lowest total system EMI solution ◊ Optimized design for Signal Integrity Applications ◊ 10G Ethernet Specification; Pin Function Definition Pin Logic Symbol Description 1   VeeT Module Transmitter Ground 2 LVTTL-O Tx_Fault Module Transmitter Fault 3 LVTTL-I Tx_Disable Transmitter disable; Turns off transmitter laser output 4 LVTTL-I/O SDA 2-wire Serial Interface Data Line (Same as MOD-DEF2 in INF-8074i) 5 LVTTL-I/O SCL 2-wire Serial Interface Clock (Same as MOD-DEF1 in INF-8074i) 6   Mod_ABS Module Absent, connected to VeeT or VeeR in the module 7 LVTTL-I RS0 Rate Select 0, optionally controls SFP+ module receiver 8 LVTTL-O Rx_LOS Receiver Loss of Signal Indication (In FC designated as Rx_LOS and in Ethernet designated as Signal Detect) 9 LVTTL-I RS1 Rate Select 1, optionally controls SFP+ module transmitter 10   VeeR Module Receiver Ground 11   VeeR Module Receiver Ground 12 CML-O RD- Receiver Inverted Data Output 13 CML-O RD+ Receiver Non-Inverted Data Output 14   VeeR Module Receiver Ground 15   VccR Module Receiver 3.3 V Supply 16   VccT Module Transmitter 3.3 V Supply 17   VeeT Module Transmitter Ground 18 CML-I TD+ Transmitter Non-Inverted Data Input 19 CML-I TD- Transmitter Inverted Data Input 20   VeeT Module Transmitter Ground   General Product Characteristics SFP+ DAC Specifications   Number of Lanes Tx & Rx Channel Data Rate 10.3125 Gbps Operating Temperature 0 to + 70°C Storage Temperature -40 to + 85°C Supply Voltage 3.3 V nominal Electrical Interface 20 pins edge connector Management Interface Serial, I2C High Speed Characteristics Parameter Symbol Min Typ Max Units Notes Differential Impedance Zd 90 100 110 Ω    Differential Input Return Loss   SDDXX <-12+2* SQRT (f) with f in GHz dB 0.01~4.1GHz <-6.3+13* Log10/(f/5.5) with f in GHz   dB  4.1~11.1GHz Common Mode Output Return Loss  SCCXX < -7+1.6*f with f in GHz dB 0.01~2.5GHz     -3 dB 2.5~11.1GHz Difference Waveform Distortion Penalty dWDPc     6.75 dB   VMA Loss L     4.4 dB   VMA Loss to Crosstalk Ratio VCR 32.5     dB   Mechanical Specifications The connector is compatible with the SFF-8432 specification. Length (m) Cable AWG 1 30 3 30 5 24 7 24 Regulatory Compliance Feature Test Method Performance Electrostatic Discharge (ESD) to the Electrical Pins  MIL-STD-883C Method 3015.7  Class 1(>2000 Volts) Electromagnetic Interference(EMI) FCC Class B Compliant with Standards CENELEC EN55022 Class B CISPR22 ITE Class B  RF Immunity(RFI)  IEC61000-4-3 Typically Show no Measurable Effect from a 10V/m Field Swept from 80 to 1000MHz RoHS Compliance RoHS Directive 2011/65/EU and it's Amendment Directives 6/6 RoHS 6/6 compliant