• QSFP+ 40Gb/s to 4SFP+ Direct Attached Cable

QSFP+ 40Gb/s to 4SFP+ Direct Attached Cable

The QSFP+ passive cable assemblies are high performance, cost effective I/O solutions for 40G Ethernet. QSFP+ copper cables allow hardware manufactures to achieve high port density, configurability and utilization at a very low cost and reduced power budget.

Product description

PRODUCT FEATURES

•Up to 40Gbps total bandwidth
•4 independent duplex channels 10Gbps
•Up to 7meter transmission
•Infiniband QDR
•QSFP+ interface compliant with SFF-8436
•SFP+ interface compliant with SFF-8472
•Temperature Range: 0~ 70 °C
•RoHS compliant

APPLICATIONS

•40G Ethernet
•Infiniband QDR
•Networked storage systems
•Hubs, Switches, Routers, Servers

PRODUCT DESCRIPTION

The QSFP+ passive cable assemblies are high performance, cost effective I/O solutions for 40G Ethernet. QSFP+ copper cables allow hardware manufactures to achieve high port density, configurability and utilization at a very low cost and reduced power budget.

Ordering Information

Part Number

Description

QP40-DP01M30WG

40G QSFP+ DAC passive cable 1m

QP40-DP02M30WG

40G QSFP+ DAC passive cable 2m

QP40-DP03M30WG

40G QSFP+ DAC passive cable 3m

QP40-DP05M26WG

40G QSFP+ DAC passive cable 5m

QP40-DP07M26WG

40G QSFP+ DAC passive cable 7m 

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

Typ

Max

Units

Notes

Differential Impedance Zd 90 100 110 ohm  
 

Differential Input Return Loss

 

 

SDDXX

<-12+2* SQRT (f) with f in GHz dB 0.01~4.1GHz
<-6.3+13*

Log10/(f/5.5) with f in GHz

 

dB

 

4.1~11.1GHz

Common Mode Output Return Loss  

SCCXX

< -7+1.6*f with f in GHz dB 0.01~2.5GHz
    -3 dB 2.5~11.1GHz
Difference Waveform Distortion Penalty dWDPc     6.75 dB  
VMA Loss L     4.4 dB  
VMA Loss to Crosstalk Ratio VCR 32.5     dB  

 

Pin Function Definition of QSFP+

a

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

Pin Function Definition of SFP+

a
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

 

Mechanical Specifications

a

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

Appendix A. Document Revision

Version No. Date Description
1.0 2018-3-1 Preliminary datasheet 

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