Hybrid Passive Copper QSFP+ to 4xSFP+GQS-4SFP+PC-XXC

The QSFP+ to 4x SFP+ Passive cable assemblies are high performance, cost effective for SFP+ and QSFP+ equipment interconnects.The Hybrid cables are compliant with SFF-8436 and SFF-8431 specifications. It is offer a low power consumption,short reach interconnect applications. The cable each lane is capable of transmitting data at rates up to 10Gb/s, providing an aggregated rate of 40Gb/s.


  • Hybrid cable conforms to the Small Form Factor SFF-8436 and SFF-8431
  • Support for multi-gigabit data rates :1 Gb/s – 10Gb/s (per channel)
  • Maximum aggregate data rate: 40 Gb/s (4 x 10Gb/s)
  • Hybrid cable link length up to 5m (passive limiting)
  • High-Density QSFP 38-PIN and 4x SFP 20-PIN Connector
  • Power Supply :+3.3V
  • Low power consumption: 0.02 W (typ.)
  • Temperature Range: 0~ 70 °C
  • 10G/40Gigabit Ethernet
  • InfiniBand4x SDR, DDR, QDR
  • Switches, Routers, and HBAs
  • Data Centers
  • Fiber Channel
Recommended Operating Conditions
Parameter Symbol Min Typical Max Unit
Storage Ambient Temperature   -40   85 °C
Operating Case Temperature Tc 0   70 °C
Power Supply Voltage VCC3 3.14 3.3 3.47 V
Power Dissipation  PD     0.02 W

QSFP+ Pin Descriptions 
Pin Logic Symbol Name/Description Notes
1   GND Ground 1
2 CML-I Tx2n Transmitter Inverted Data Input  
3 CML-I Tx2p Transmitter Non-Inverted Data Input  
4   GND Ground 1
5 CML-I Tx4n Transmitter Inverted Data Input  
6 CML-I Tx4p Transmitter Non-Inverted Data Input  
7   GND Ground 1
8 LVTTL-I ModSelL Module Select  
9 LVTTL-I ResetL Module Reset  
10   Vcc Rx +3.3V Power Supply Receiver 2
11 LVCMOSI/O SCL 2-wire serial interface clock  
12 LVCMOSI/O SDA 2-wire serial interface data  
13   GND Ground 1
14 CML-O Rx3p Receiver Non-Inverted Data Output  
15 CML-O Rx3n Receiver Inverted Data Output  
16   GND Ground 1
17 CML-O Rx1p Receiver Non-Inverted Data Output  
18 CML-O Rx1n Receiver Inverted Data Output  
19   GND Ground 1
20   GND Ground 1
21 CML-O Rx2n Receiver Inverted Data Output  
22 CML-O Rx2p Receiver Non-Inverted Data Output  
23   GND Ground 1
24 CML-O Rx4n Receiver Inverted Data Output  
25 CML-O Rx4p Receiver Non-Inverted Data Output  
26   GND Ground 1
27 LVTTL-O ModPrsL Module Present  
28 LVTTL-O IntL Interrupt  
29   Vcc Tx +3.3V Power supply transmitter 2
30   Vcc1 +3.3V Power supply 2
31 LVTTL-I LPMode Low Power Mode  
32   GND Ground 1
33 CML-I Tx3p Transmitter Non-Inverted Data Input  
34 CML-I Tx3n Transmitter Inverted Data Input  
35   GND Ground 1
36 CML-I Tx1p Transmitter Non-Inverted Data Input  
37 CML-I Tx1n Transmitter Inverted Data Input  
38   GND Ground 1

Note 1: GND is the symbol for signal and supply (power) common for the QSFP+ module. All are common within the QSFP+ module and all module voltages are referenced to this potential unless otherwise noted. Connect these directly to the host board signal-common ground plane.
Note 2: Vcc Rx, Vcc1 and Vcc Tx are the receiver and transmitter power supplies and shall be applied concurrent- ly. Requirements defined for the host side of the Host Edge Card Connector are listed in Table 6. Recommended host board power supply filtering is shown in Figure 4. Vcc Rx Vcc1 and Vcc Tx may be internally connected with- in the QSFP+ Module module in any combination. The connector pins are each rated for a maximum current of 500 mA.

SFP+ Pin Descriptions
Pin Logic Symbol Name/Description Notes
1   VeeT Transmitter Ground  
2 LV-TTL-O TX_Fault N/A 1
3 LV-TTL-I TX_DIS Transmitter Disable 2
4 LV-TTL-I/O SDA Tow Wire Serial Data  
5 LV-TTL-I SCL Tow Wire Serial Clock  
6   MOD_DEF0 Module present, connect to VeeT  
7 LV-TTL-I RS0 N/A 1
8 LV-TTL-O LOS LOS of Signal 2
9 LV-TTL-I RS1 N/A 1
10   VeeR Reciever Ground  
11   VeeR Reciever Ground  
12 CML-O RD- Reciever Data Inverted  
13 CML-O RD+ Reciever Data Non-Inverted  
14   VeeR Reciever Ground  
15   VccR  Reciever Supply 3.3V  
16   VccT Transmitter Supply 3.3V  
17   VeeT Transmitter Ground  
18 CML-I TD+ Transmitter Data Non-Inverted  
19 CML_I TD- Transmitter Data Inverted  
20   VeeT Transmitter Ground  
X1:1m/30AWG X2:2m/30AWG X3:3m/30AWG X4:4m/28AWG X1:5m/28AWG