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十五年光纤通信制造，专业造就品质。
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JHA-QSFP28-4SFP28-100G-AOC spec
- 产品描述
- 产品特征
- 产品参数
-
l Support 4x25GBASE-SR application
l Compliant to QSFP28 MSA SFF-8636 and SFP28 MSA SFF-8431 and SFF- 8472
l Multi rate of up to 25.78125Gbps per lane
l Transmission distance up to 50m
l+3.3V single power supply
l Low power consumption
l UL certification cables (optional)
l Operating temp Commercial: 0°C to +70 °C
l RoHS compliant
Applications
l 4x25Gbe-SR
l Other optical links
-
l Support 4x25GBASE-SR application
l Compliant to QSFP28 MSA SFF-8636 and SFP28 MSA SFF-8431 and SFF- 8472
l Multi rate of up to 25.78125Gbps per lane
l Transmission distance up to 50m
l+3.3V single power supply
l Low power consumption
l UL certification cables (optional)
l Operating temp Commercial: 0°C to +70 °C
l RoHS compliant
Applications
l 4x25Gbe-SR
l Other optical links
-
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: 1Per 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: 1PRBS2^31-1@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
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.
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.
Recommended Circuit
Figure 3, Recommended Interface Circuit for QSFP28
Figure 4, Recommended Host Board Power Supply Circuit for SFP28
Figure 5, Recommended Interface Circuit for SFP28
Monitoring Specification
Figure 6, Memory Map for QSFP28
Figure 7, Memory Map for SFP28
Mechanical
Unit mm
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 SFP
L2(Unit: m)
1
0.7
2
1.4
3
2
≥5
3
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