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100G QSFP28 TO 4SFP28 Direct Attach Cable

100G QSFP28 TO 4SFP28 Direct Attach Cable

100G QSFP28 TO 4SFP28 Direct Attach Cable

QSFP28 Direct Attach Cables are compliant with the SFF-8665 specifications. SFP28 Direct Attach Cables are compliant with SFF-8432 and SFF-8402 specifications. Various choices of wire gauge are available from 30 to 26 AWG with various choices of cable length (up to 5m).


Features of 100G QSFP28 TO 4SFP28 Direct Attach Cable

  • Up to 25.78Gbps data rate per channel

  • Up to 5m transmission

  • Hot-pluggable QSFP+ 38 PIN footprint

  • Compatible to SFF-8665

  • Compliant with IEEE 802.3bj

  • Single 3.3V power supply

  • Temperature Range: 0~ 70 °C

  • RoHS compliant


Applications of 100G QSFP28 TO 4SFP28 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 100G QSFP28 TO 4SFP28 Direct Attach Cable

Mechanical Specifications
Ordering Information

Parameter

Minimum

Typical

Maximum

Unit

Cable Diameter (26AWG)

-

0.220

-

Inches

Bend Radius (26AWG)

1.102

-

-

Inches

Cable Diameter (28AWG)

-

0.185

-

Inches

Bend Radius (28AWG)

0.925

-

-

Inches

Cable Diameter (30 AWG)

-

0.181

--

Inches

Bend Radius (30 AWG)

0.906

-

-

Inches

Within Pair Skew

-

-

100

ps/10m

Cable Insertion Loss

-

15.43

-

dB/5m

Bulk Cable Time Delay

-

-

5.2

ns/m

Bulk Cable Impedance

95

100

105

Ohms

Insertion Force

-

-

40

N

Withdrawal Force

-

-

30

N

Retention Force

90

-

-

N

Durability

50 Cycles

-

-

-


100G QSFP28 4x25G QSFP28 Copper Breakout Cable Assemblies, Passive

P/N

Length

Data Rate

AWG

Length Tolerance

TSQSS-PC1HG-01M

1M

100G

28 / 30

+3.5/-3.5cm

TSQSS-PC1HG-02M

2M

100G

28 / 30

+3.5/-3.5cm

TSQSS-PC1HG-03M

3M

100G

28 / 30

+4/-4cm

TSQSS-PC1HG-05M

5M

100G

26

+6/-6cm


Recommended Operation Condition of 100G QSFP28 TO 4SFP28 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.


Frequency Domain of 100G QSFP28 TO 4SFP28 Direct Attach Cable

Item

Test Parameter

IEEE802.3bj Specification

1

Differential Insertion Loss (SDD12)

Maximum insertion loss at 12.8906Ghz @22.48dB

Minimum insertion loss at 12.8906Ghz@8dB

2

Differential Insertion Loss (SDD21)

Maximum insertion loss at 12.8906Ghz@22.48dB

Minimum insertion loss at 12.8906Ghz@8dB

3

Differential Return Loss (SDD22)

-16.5+2xSQRT(f) @ 0.01 to 4.1GHz

-10.66+14xLog10(f/5.5) @4.1 to 19GHz

4

Differential Return Loss (SDD11)

-16.5+2xSQRT(f) @ 0.01 to 4.1GHz

-10.66+14xLog10(f/5.5) @4.1 to 19GHz

5

Common Mode Reflection (SCC22)

-2dB @ 0.01 to 19GHz

6

Common Mode Reflection (SCC11)

-2dB @ 0.01 to 19GHz

7

Common Mode Conversion (SCD22)

-22+(20/25.78)*(f) @ 0.01 to 12.89GHz

-15+(6/25.78)*(f) @ 12.9 to 19GHz

8

Common Mode Conversion (SCD11)

-22+(20/25.78)*(f) @ 0.01 to 12.89GHz

-15+(6/25.78)*(f) @ 12.9 to 19GHz

9

Differential to Common Mode Conversion Loss (SCD12)

-10dB @ 0.01 to 12.89GHz

-27+(29/22)*(f) @ 12.9 to 15.7GHz

-6.3dB @ 15.71 to 19GHz

10

Differential to Common Mode Conversion Loss (SCD21)

-10dB @ 0.01 to 12.89GHz

-27+(29/22)*(f) @ 12.9 to 15.7GHz

-6.3dB @ 15.71 to 19GHz


QSFP28 Pin definition

Pin

Symbol

Name/Description

1

GND

Ground

2

Tx2n

Transmitter Inverted Data Input

3

Tx2p

Transmitter Non-Inverted Data Input

4

GND

Ground

5

Tx4n

Transmitter Inverted Data Input

6

Tx4p

Transmitter Non-Inverted Data Input

7

GND

Ground

8

ModSelL

Module Select

9

ResetL

Module Reset

10

Vcc Rx

+3.3 V Power supply receiver

11

SCL

2-wire serial interface clock

12

SDA

2-wire serial interface data

13

GND

Ground

14

Rx3p

Receiver Non-Inverted Data Output

15

Rx3n

Receiver Inverted Data Output

16

GND

Ground

17

Rx1p

Receiver Non-Inverted Data Output

18

Rx1n

Receiver Inverted Data Output

19

GND

Ground

20

GND

Ground

21

Rx2n

Receiver Inverted Data Output

22

Rx2p

Receiver Non-Inverted Data Output

23

GND

Ground

24

Rx4n

Receiver Inverted Data Output

25

Rx4p

Receiver Non-Inverted Data Output

26

GND

Ground

27

ModPrsL

Module Present

28

IntL

Interrupt

29

Vcc Tx

+3.3 V Power supply transmitter

30

Vcc1

+3.3 V Power Supply

31

LPMode

Low Power Mode

32

GND

Ground

33

Tx3p

Transmitter Non-Inverted Data Input

34

Tx3n

Transmitter Inverted Data Input

35

GND

Ground

36

Tx1p

Transmitter Non-Inverted Data Input

37

Tx1n

Transmitter Inverted Data Input

38

GND

Ground


Pin Descriptions of 100G QSFP28 TO 4SFP28 Direct Attach Cable

Pin-Descriptions2.jpg


SFP28 Pin Descriptions

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.

SFP28-Pin-Descriptions.jpg



Mechanical Dimensions of 100G QSFP28 TO 4SFP28 Direct Attach Cable

The connector is compatible with the SFF-8432 and SFF-8665 specification.

Mechanical-Dimensions2.jpg

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