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 of 10G Direct Attach Cable
Compliant with SFF-8431, 8432 and 8472.
Up to 10.3125Gbps data rate per channel
Up to 7m transmission
Single 3.3V power supply
Temperature Range: 0~ 70 °C
RoHS compliant
Applications of 10G SFP+ Direct Attach Cable
Low EMI radiation Switches, servers and routers
Data Center networks
Storage area networks
High performance computing
Telecommunication and wireless infrastructure
Medical diagnostics and networking
Test and measurement equipment
Specifications of 10G SFP+ Direct Attach Cable
General Product Characteristics
High Speed Characteristics
Regulatory Compliance
QSFP+ 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 38 pins edge connector
Management Interface Serial, I2C
Recommended Operation Condition of 10G SFP+ Direct Attach Cable
Parameter Symbol Min Max Unit
Operating Case Temperature Topc 0 70 degC
Storage Temperature Tst -40 85 degC
Relative Humidity (non-condensation) RS 35 60 %
Supply Voltage VCC3 3.135 3.465 V
Voltage on LVTTL Input Vilvttl -0.3 VCC3 +0.2 V
Power Supply Current ICC3 - 15 mA
Total Power Consumption Pd - 0.05 W
Notes:
Stress or conditions exceed the above range may cause permanent damage to the device.
This is a stress rating only and functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not applied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Pin definition of 10G SFP+ Direct Attach Cable
Pin Symbol Name/Description
1 VEET [1] Transmitter Ground
2 Tx_FAULT [2] Not used
3 Tx_DIS [3] Not used
4 SDA [2] 2-wire Serial Interface Data Line
5 SCL [2] 2-wire Serial Interface Clock Line
6 MOD_ABS [4] Module Absent. Grounded within the module
7 RS0 [5] Not used
8 RX_LOS [2] Loss of Signal indication. Logic 0 indicates normal operation
9 RS1 [5] Not used
10 VEER [1] Receiver Ground
11 VEER [1] Receiver Ground
12 RD- Receiver Inverted DATA out. AC Coupled
13 RD+ Receiver DATA out. AC Coupled
14 VEER [1] Receiver Ground
15 VCCR Receiver Power Supply
16 VCCT Transmitter Power Supply
17 VEET [1] Transmitter Ground
18 TD+ Transmitter DATA in. AC Coupled
19 TD- Transmitter Inverted DATA in. AC Coupled
20 VEET [1] Transmitter Ground
Notes:
1. Module circuit ground is isolated from module chassis ground within the module.
2..should be pulled up with 4.7k – 10k ohms on host board to a voltage between 3.15Vand 3.6V.
3.Tx_Disable is an input contact with a 4.7 kΩ to 10 kΩ pullup to VccT inside the module.
4.Mod_ABS is connected to VeeT or VeeR in the SFP+ module. The host may pull this contact up to Vcc_Host with a resistor in the range 4.7 kΩ to10 kΩ.Mod_ABS is asserted “High” when the SFP+ module
is physically absent from a host slot.
5. RS0 and RS1 are module inputs and are pulled low to VeeT with > 30 kΩ resistors in the module.
Mechanical Dimensions of 10G SFP+ Direct Attach Cable
The connector is compatible with the SFF-8432 specification.
Length (m) Cable AWG
1 30
3 30
5 24
7 24
As an optic connector supplier, T&S today takes a leading role in OEM and ODM services for optical communication products and fiber optic connectivity solutions. Based on T&S’ excellent and
comprehensive capabilities, we are committed to providing optical communication products with superior performance for next-generation communications in a green, pragmatic, and cost-effective
manner.