• QSFP+ 40Gb/s Direct Attached Cable

QSFP+ 40Gb/s 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
•Compliant with SFF-8436.
•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-DP0.5M30WG

40G QSFP+ to QSFP+ DAC passive cable 0.5m

QP40-DP01M30WG

40G QSFP+ to QSFP+ DAC passive cable 1m

QP40-DP02M30WG

40G QSFP+ to QSFP+ DAC passive cable 2m

QP40-DP03M30WG

40G QSFP+ to QSFP+ DAC passive cable 3m

QP40-DP05M26WG

40G QSFP+ to QSFP+ DAC passive cable 5m

QP40-DP07M26WG

40G QSFP+ to QSFP+ DAC passive cable 7m 

General Product Characteristics

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

 

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

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

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

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