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100-4*25G Active optical cabel (QSFP28-4*SFP28) JHA-QSFP28-4SFP28-100G-AOC

100-4*25G Active optical cabel (QSFP28-4*SFP28) JHA-QSFP28-4SFP28-100G-AOC Featured Image
  • 100-4*25G Active optical cabel (QSFP28-4*SFP28) JHA-QSFP28-4SFP28-100G-AOC
  • 100-4*25G Active optical cabel (QSFP28-4*SFP28) JHA-QSFP28-4SFP28-100G-AOC
  • 100-4*25G Active optical cabel (QSFP28-4*SFP28) JHA-QSFP28-4SFP28-100G-AOC

Short Description:

Support 4x25GBASE-SR application
Compliant to QSFP28 MSA SFF-8636 and SFP28 MSA SFF-8431 and SFF- 8472
Multi rate of up to 25.78125Gbps per lane


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Overview

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Features

◊ Support 4x25GBASE-SR application

◊ Compliant to QSFP28 MSA SFF-8636 and SFP28 MSA SFF-8431 and SFF- 8472

◊ Multi rate of up to 25.78125Gbps per lane

◊ Transmission distance up to 50m

◊ +3.3V single power supply

◊ Low power consumption

◊ UL certification cables (optional)

◊ Operating  temp Commercial: 0°C to +70 °C

◊ RoHS compliant

Applications

◊ 4x25Gbe-SR

◊ Other optical links

Specification:

Absolute Maximum Ratings

Table1- Absolute Maximum Ratings

      Parameter

Symbol

Min.

Typical

Max.

Unit

Notes

Supply Voltage

Vcc3

-0.5

-

+3.6

V

 

Storage Temperature

Ts

-10

-

+70

°C

 

Operating Humidity

RH

+5

-

+85

%

1

Note: 1 No condensation

Recommended Operating Conditions

Table 2- Recommended operating Conditions

Parameter Symbol Min. Typical

Max.

 Unit Notes
Operating  Temperature TC 0 -

+70

 °C  
Power Supply Voltage Vcc 3.14 3.3

3.47

 V  
Power Dissipation per QSFP28 Pd - -

2.5

 W  
Power Dissipation per SFP28 Pd - -

1.0

 W 1
Bit Rate  per Lane BR 10.3125 25.78125 - Gbps  

Note: 1 Per terminal

Electrical Characteristics

Table 3- Electrical Characteristics for QSFP28

Parameter Symbol Min. Typ. Max. Units Notes
 ModSelL Module Select VOL 0 - 0.8 V  
Module Unselect VOH 2.5 - VCC V  
 LPMode Low Power Mode VIL 0 - 0.8 V  
Normal Operation VIH 2.5 - VCC+0.3 V  
 ResetL Reset VIL 0 - 0.8 V  
Normal Operation VIH 2.5 - VCC+0.3 V  
ModPrsL Normal Operation VOL 0 - 0.4 V  
 IntL Interrupt VOL 0 - 0.4 V  
Normal Operation VoH 2.4 - VCC V  
Electrical Transmitter Characteristics
Differential Date Input Swing Vin,P-P 200 - 1600 mV  
Output Differential Impedance ZIN 90 100 110 Ω  
Electrical Receiver Characteristics
Differential Data Output Swing Vout 200 - 800 mVPP  
Bit Error Rate BER     E-12   1
Input Differential Impedance ZD 90 100 110 Ω  

Note: 1 PRBS2^31-1@25.78125Gbps

Table 4- Electrical Characteristics for SFP28

Parameter Symbol Min. Typ.

Max.

 Units Notes
Electrical Transmitter Characteristics
Differential Data Input Swing Vin,P-P 200 - 1600 mVPP  
Input Differential Impedance ZIN 90 100 110 Ω  
 Tx_Fault Normal Operation VOL 0 - 0.8 V  
Transmitter Fault VOH 2.0 - VCC V  
 Tx_Disable Normal Operation VIL 0 - 0.8 V  
Laser Disable VIH 2.0 - VCC+0.3 V  
Electrical Receiver Characteristics
Differential Date Output Vout 400 -

800

 mV  
Bit Error Rate BER - -

E-12

 -  
Output Differential Impedance ZD 90 100

110

 Ω  
 Rx_LOS Normal Operation VOL 0 -

0.8

 V  
Lose Signal VoH 2.0 -

VCC

 V  

Pin arrangement

 1

             Figure 1, Pin View for QSFP28

Table 5- Pin Function Definitions for QSFP28

Pin Symbol Name/Description Notes
1 GND Ground 1
2 Tx2n Transmitter Inverted Data Input  
3 Tx2p Transmitter Non-Inverted Data Input  
4 GND Ground 1
5 Tx4n Transmitter Inverted Data Input  
6 Tx4p Transmitter Non-Inverted Data Input  
7 GND Ground 1
8 ModSelL Module Select  
9 ResetL Module Reset  
10 Vcc Rx +3.3V Power Supply Receiver  
11 SCL 2-wire serial interface clock  
12 SDA 2-wire serial interface data  
13 GND Ground 1
14 Rx3p Receiver Non-Inverted Data Output  
15 Rx3n Receiver Inverted Data Output  
16 GND Ground 1
17 Rx1p Receiver Non-Inverted Data Output  
18 Rx1n Receiver Inverted Data Output  
19 GND Ground 1
20 GND Ground 1
21 Rx2n Receiver Inverted Data Output  
22 Rx2p Receiver Non-Inverted Data Output  
23 GND Ground 1
24 Rx4n Receiver Inverted Data Output  

 

Pin

Symbol

 Name/Description Notes
25 Rx4p Receiver Non-Inverted Data Output  
26 GND Ground 1
27

ModPrsL

 Module Present  
28 IntL Interrupt  
29 Vcc Tx +3.3V Power supply transmitter  
30 Vcc1 +3.3V Power supply  
31

LPMode

 Low Power Mode  
32 GND Ground 1
33 Tx3p Transmitter Non-Inverted Data Input  
34 Tx3n Transmitter Inverted Data Input  
35 GND Ground 1
36 Tx1p Transmitter Non-Inverted Data Input  
37 Tx1n Transmitter Inverted Data Input  
38 GND Ground 1

Note: 1. Circuit ground is internally isolated from chassis ground.

3 

Figure 2, Pin View for SFP28

Table 6-Pin Function Definitions

Pin Symbol Name/Description Notes
1 VEET Module Transmitter Ground 1
2 TX_FAULT Module Transmitter Fault 2
3 TX_DISABLE Transmitter Disable; Turns off transmitter laser output 3
4 SDA 2-Wire Serial Interface Data Line (MOD-DEF2)  
5 SCL 2-Wire Serial Interface Clock (MOD-DEF1)  
6 MOD_ABS Module Absent, connected to VEET or VEER in the module 2
7 RS0 Rate Select 0, optionally controls SFP+ module receiver 4
8 RX_LOS Receiver Loss of Signal Indication (In FC designated as Rx_LOS and in Ethernet designated as NOT Signal Detect) 2
9 RS1 Rate Select 1, optionally controls SFP+ module transmitter 4

 

Pin Symbol Name/Description Notes
10 VEER Module Receiver Ground 1
11 VEER Module Receiver Ground 1
12 RD- Receiver Inverted Data Output  
13 RD+ Receiver Non-Inverted Data Output  
14 VEER Module Receiver Ground 1
15 VCCR Module Receiver 3.3 V Supply  
16 VCCT Module Transmitter 3.3 V Supply  
17 VEET Module Transmitter Ground 1
18 TD+ Transmitter Non-Inverted Data Input  
19 TD- Transmitter Inverted Data Input  
20 VEET Module Transmitter Ground 1

Note:

  1. The module ground pins are isolated from the module case.
  2. The pins shall be pulled up with 4.7K-10Kohms to a voltage between 3.14V and 3.46V on host board.
  3. The pin is pulled up to VCCT with a 4.7K-10KΩ resistor in the module.
  4. See SFF-8472 Rev12.2 Table 10-2.

 4

Recommended Circuit

Figure 3, Recommended Interface Circuit for QSFP28

 56

Figure 4, Recommended Host Board Power Supply Circuit for SFP28

 7

Figure 5, Recommended Interface Circuit for SFP28

 

Monitoring Specification

87 

Figure 6, Memory Map for QSFP28

 98         

            Figure 7, Memory Map for SFP28

Mechanical

Unit mm

 42442

          Figure 8, Mechanical Diagram

Table 7- Cable Length

Cable Length  L1（Unit: m） Tolerant（Unit: cm）
≤1.0 +5/-0
1.0＜L≤4.5 +15/-0
4.5＜L≤14.5 +30/-0
＞14.5 +2%/-0

Table 8- Breakout Cable Nominal Length

Total Length L1 (Unit: m)

 Breakout Point Measured from SFPL2(Unit: m)
1 0.7
2 1.4
3 2
≥5 3

Warnings

Handling Precautions: This device is susceptible to damage as a result of electrostatic discharge (ESD).

A static free environment is highly recommended. Follow guidelines according to proper ESD procedures.

Laser Safety: Radiation emitted by laser devices can be dangerous to human eyes. Avoid eye exposure to direct or indirect radiation.

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