40G QSFP+ PASSIVE Direct Attach Copper Cable

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.
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Product Details

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: 0~70℃

Single 3.3V power supply

RoHS compliant

Advantage

Cost-effective copper solution

Lowest total system power solution

Lowest total system EMI solution

Optimized design for Signal Integrity

Applications

40G Ethernet

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


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