200G QSFP-DD-2xQSFP28 Direct Attach Cable (DAC)

QSFP-DD-2xQSFP28 passive copper cable assembly feature sixteen differential copper pairs, providing eight data transmission channels at speeds up to 25Gbps(NRZ) per channel, and meets 200G Ethernet and InfiniBand Enhanced Data Rate(EDR) requirements. Available in a broad range of wire gages from 28AWG through 30AWG, this 200G copper cable assembly features low insertion loss and low crosstalk. Features and Benefits l Compatible with IEEE 802.3bj l Supports aggregate data rates of 200Gbps(NRZ) 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 28AWG through30AWG cable l 3.3V Power supply l Temperature Range: 0~ 70 °C l RoHS Compliant Product Applications l Switches, servers and routers l Data Center networks l Storage area networks l High performance computing l Telecommunication and wireless infrastructure l Medical diagnostics and networking l Test and measurement equipment Industry Standards l 200_2x100G Ethernet(IEEE 802.3bj) l InfiniBand EDR Pin Descriptions QSFP-DD 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 39 GND Ground 40 CML-I Tx6n Transmitter Inverted Data Input 41 CML-I Tx6p Transmitter Non-Inverted Data Input 42 GND Ground 43 CML-I Tx8n Transmitter Inverted Data Input 44 CML-I Tx8p Transmitter Non-Inverted Data Input 45 GND Ground 46 Reserved 47 VS1 48 VccRx1 +3.3V Power supply 49 VS2 50 VS3 51 GND Ground 52 CML-O Rx7p Receiver Non-Inverted Data Output 53 CML-O Rx7n Receiver Inverted Data Output 54 GND Ground 55 CML-O Rx5p Receiver Non-Inverted Data Output 56 CML-O Rx5n Receiver Inverted Data Output 57 GND Ground 58 GND Ground 59 CML-O Rx6n Receiver Inverted Data Output 60 CML-O Rx6p Receiver Non-Inverted Data Output 61 GND Ground 62 CML-O Rx8n Receiver Inverted Data Output 63 CML-O Rx8p Receiver Non-Inverted Data Output 64 GND Ground 65 NC 66 Reserved 67 VccTx1 +3.3V Power supply 68 VCC2 +3.3V Power supply 69 Reserved 70 GND Ground 71 CML-I Tx7p Transmitter Non-Inverted Data Input 72 CML-I Tx7n Transmitter Inverted Data Input 73 GND Ground 74 CML-I Tx5p Transmitter Non-Inverted Data Input 75 CML-I Tx5n Transmitter Inverted Data Input 76 GND Ground QSFP28 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 QSFP-DD-2xQSFP28 DAC Specifications Number of Lanes Tx8 &Rx8(QSFP-DD) Tx4 &Rx4(QSFP28) Channel Data Rate 25.78125Gbps Operating Temperature 0 to + 70°C Storage Temperature -40 to + 85°C Supply Voltage 3.3 V nominal Electrical Interface 76pins edge connector(QSFP-DD) 38pins edge connector(QSFP28) Management Interface Serial, I2C High Speed Characteristics Parameter Symbol Min Typical Max Unit Note Differential Impedance TDR 90 100 110 Ώ Insertion loss SDD21 -22.48 dB At 12.89GHz Differential Return Loss SDD11 SDD22 See 1 dB At 0.05 to 4.1 GHz See 2 dB At 4.1 to 19 GHz Common-mode to common-mode output return loss SCC11 SCC22 -2 dB At 0.2 to 19 GHz Differential to common-mode return loss SCD11 SCD22 See 3 dB At 0.01 to 12.89 GHz See 4 At 12.89 to 19 GHz Differential to common Mode Conversion Loss SCD21-IL -10 dB At 0.01 to 12.89 GHz See 5 At 12.89 to 15.7 GHz -6.3 At 15.7 to 19 GHz Notes: 1. Reflection Coefficient given by equation SDD11(dB) < -16.5 + 2 × SQRT(f ), with f in GHz 2. Reflection Coefficient given by equation SDD11(dB) < -10.66 + 14 × log10(f/5.5), with f in GHz 3. Reflection Coefficient given by equation SCD11(dB) < -22 + (20/25.78)*f, with f in GHz 4. Reflection Coefficient given by equation SCD11(dB) < -15 + (6/25.78)*f, with f in GHz 5. Reflection Coefficient given by equation SCD21(dB) < -27 + (29/22)*f, with f in GHz Mechanical Specifications The connector is compatible with the QSFP-DD and SFF-8436 specification. Length (m) Cable AWG 1 30 2 30 3 30 5 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