General Description
QSFP+ Direct Attach Cables are compliant with the SFF-8436 specifications. 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- 8436, SFF-8431, SFF-8432 and SFF-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
? 40G Ethernet
Pin Function Definition
QSFP+ 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 |
SFP+ 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
Q/4SFP+ 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(QSFP+) 20 pins edge connector(SFP+) |
Management Interface | Serial, I2C |
High Speed Characteristics
Parameter | Symbol | Min | Typical | Max | Unit | Note |
Differential Impedance | TDR | 90 | 100 | 110 | ? |
|
Insertion loss | SDD21 | -17.04 |
|
| dB | At 5.15625 GHz |
Differential Return Loss | SDD11 SDD22 |
|
| See 1 | dB | At 0.05 to 4.1 GHz |
|
| See 2 | dB | At 4.1 to 11.1 GHz |
Differential to common-mode return loss | SCD11 SCD22 |
|
| -10 | dB | At 0.2 to 11.1 GHz |
Common-mode to common-mode output return loss | SCC11 SCC22 | -3 | dB | At 0.01 to 11.1 GHz |
Notes: 1. Reflection Coefficient given by equation SDD11(dB) < -12 + 2 × SQRT(f ), with f in GHz 2. Reflection Coefficient given by equation SDD11(dB) < -6.3 + 13 × log10(f/5.5), with f in GHz |
Mechanical Specifications
The connector is compatible with the SFF-8436 to SFF-8432 specification.
Length (m) | able AWG |
1 | 30 |
3 | 30 |
5 | 26 |
7 | 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 6/6 | RoHS 6/6 compliant |
