400G QSFP112 Direct Attach Cable (DAC) NDR

General Description QSFP112 passive copper cable assembly feature eight differential copper pairs, providing four data transmission channels at speeds up to 100Gbps(PAM4) per channel, and meets 400G Ethernet and InfiniBand Next Data Rate(NDR) requirements. Available in 26AWG and 30AWG wire gauges, this 400G copper cable assembly features low insertion loss and low crosstalk. QSFP112 passive copper cable uses PAM4 signals for transmission, which doubles the rate. However, there are more stringent requirements for cable insertion loss. For detailed requirements, please see High Speed Characteristics. Features and Benefits l Compatible with IEEE 802.3ck l Supports aggregate data rates of 400Gbps(PAM4) l Optimized construction to minimize insertion loss and crosstalk l Pull-to-release slide latch design l Straight and break out assembly configurations available l Customized cable braid termination limits EMI radiation l Customizable EEPROM mapping for cable signature l 26AWG and 30AWG cable l 3.3V Power supply l Temperature Range: 0~ 70 °C l RoHS Compliant Product Applications .Switches, servers and routers .Data Center networks .Storage area networks .High performance computing .Telecommunication and wireless infrastructur .Medical diagnostics and networking .Test and measurement equipment Industry Standards .400G Ethernet(IEEE 802.3ck) . InfiniBand NDR Pin Descriptions QSFP112 Pin Function Definition Pin Logic Symbol Description 1 GND Ground 2 CML-I Tx2n Transmitter Inverted Data Input 3 CML-I Tx2p Transmitter Non-Inverted Data Input 4 GND Ground 5 CML-I Tx4n Transmitter Inverted Data Input 6 CML-I Tx4p Transmitter Non-Inverted Data Input 7 GND Ground 8 LVTTL-I ModSelL Module Select 9 LVTTL-I ResetL Module Reset 10 Vcc Rx +3.3V Power Supply Receiver 11 LVCMOS- I/O SCL 2-wire serial interface clock 12 LVCMOS- I/O SDA 2-wire serial interface data 13 GND Ground 14 CML-O Rx3p Receiver Non-Inverted Data Output 15 CML-O Rx3n Receiver Inverted Data Output 16 GND Ground 17 CML-O Rx1p Receiver Non-Inverted Data Output 18 CML-O Rx1n Receiver Inverted Data Output 19 GND Ground 20 GND Ground 21 CML-O Rx2n Receiver Inverted Data Output 22 CML-O Rx2p Receiver Non-Inverted Data Output 23 GND Ground 24 CML-O Rx4n Receiver Inverted Data Output 25 CML-O Rx4p Receiver Non-Inverted Data Output 26 GND Ground 27 LVTTL-O ModPrsL Module Present 28 LVTTL-O IntL Interrupt 29 Vcc Tx +3.3V Power supply transmitter 30 Vcc1 +3.3V Power supply 31 LVTTL-I LPMode Low Power Mode 32 GND Ground 33 CML-I Tx3p Transmitter Non-Inverted Data Input 34 CML-I Tx3n Transmitter Inverted Data Input 35 GND Ground 36 CML-I Tx1p Transmitter Non-Inverted Data Input 37 CML-I Tx1n Transmitter Inverted Data Input 38 GND Ground General Product Characteristics QSFP112 DAC Specifications Number of Lanes Tx4 Rx4 Channel Data Rate 106. 25Gbps Operating Temperature 0 to + 70°C Storage Temperature -40 to + 85°C Supply Voltage 3.3 V nominal Electrical Interface 38pins edge connector Management Interface Serial, I2C High Speed Characteristics Parameter Symbol Min Typical Max Unit Note Differential Impedance TDR 90 100 110 Ώ Insertion loss SDD21 -19.75 dB At 26.56 GHz Differential Return Loss SCD11 SCD22 See 1 dB At 0.05 to 26.56GHz See 2 dB At 26.56 to 40 GHz Common-mode to common-mode output return loss SCC11 SCC22 -1.8 dB At 0.2 to 40GHz Differential to common Mode Conversion Loss SCD21- SDD21 -10 dB At 0.05 to 12.89 GHz See3 At 12.89 to 40 GHz Notes: 1. Reflection Coefficient given by equation SCD11(dB) <22-10(f/26.56), with f in GHz 2. Reflection Coefficient given by equation SCD11(dB) <15-3(f/26.5), with f in GHz 3. Reflection Coefficient given by equation SCD21-CDD21(dB) < 14-0.3108*f, with f in GHz Mechanical Specifications The connector is compatible with the SFF8672 specification. Length (m) Cable AWG L≤1M 30 1M＜L≤2M 26 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 （EU） 2015/863 RoHS （EU）2015/863 compliant REACH Compliance REACH Regulation (EC) No 1907/2006 REACH (EC) No 1907/2006 compliant