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100G QSFP28 TO 4xSFP28 Active Optical Cables specification
100G QSFP28 TO 4xSFP28 Active Optical Cables specification
Description
100G QSFP28 to 4xSFP28 active optical cable is a high-performance, low-power, long-distance interconnection solution that supports100G.
100G QSFP to 4xSFP28 is a combination of 4 full-duplex channels, each of which can transmit data at a rate of up to 25.78125GB/s, providing an aggregation rate of 100GB/s.
100G QSFP to 4xSFP28 active optical cable (AOC) can be used as an alternative to QSFP28 passive and active copper cables.
Features
- Support 4x25GBASE-SR application
- Compliant to QSFP28 MSA SFF-8636 and SFP28 MSA SFF-8431 and SF-8472
- Multi rate of up to 25.78125Gbps per lane
- +3.3V single power supply
- Low power consumption
- UL certification cables (optional)
- Operating case temp Commercial: 0°C to +70 °C
- RoHS compliant
Applictions
- 100GBASE-SR4 at 25.78125Gbps per lane
- InfiniBand QDR, EDR
- Other optical link
Cable Length
Parameter |
Value |
Units |
Diameter |
3 |
mm |
Minimum bend radius |
30 |
mm |
Length tolerance |
Length < 1 m: +5 /-0 |
cm |
1 m ≤length ≤ 4.5 m: +15 / -0 |
cm |
|
5 m ≤length ≤ 14.5 m: +30 / -0 |
cm |
|
Length≥15.0 m +2% / -0 |
m |
|
Cable color |
Orange(OM2),Aqua(OM3),Megenta(OM4) |
Breakout Cable Nominal Length
Total Length X (Unit: m) |
Breakout Point Measured from QSFP LQ (Unit: m) |
Breakout Point Measured from SFP LS(Unit: m) |
1 |
0.3 |
0.7 |
2 |
0.6 |
1.4 |
3 |
1 |
2 |
5 |
2 |
3 |
7 |
4 |
3 |
10 |
7 |
3 |
15 |
12 |
3 |
20 |
17 |
3 |
25 |
22 |
3 |
30 |
27 |
3 |
40 |
37 |
3 |
50 |
47 |
3 |
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 |
|
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 |
|
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:
- The module ground pins are isolated from the module
- The pins shall be pulled up with 4.7K-10Kohms to a voltage between 3.14V and 3.46V on host
- The pin is pulled up to VCCT with a 4.7K-10KΩ resistor in the
Recommended Operating Conditions
Parameter |
Symbol |
Min. |
Typical |
Max. |
Unit |
Notes |
Operating Case 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 Bit Rate per Lane |
BR |
10.3125 |
25.78125 |
- |
Gbps |
Per lane |
Note: 1 Per terminal
Absolute Maximum Ratings
Parameter |
Symbol |
Min. |
Typical |
Max. |
Unit |
Notes |
Supply Voltage |
Vcc3 |
-0.5 |
- |
+3.6 |
V |
|
Storage Temperature |
Ts |
-5 |
- |
+75 |
°C |
|
Operating Humidity |
RH |
+5 |
- |
+85 |
% |
1 |
Note: 1 No condensation
Electrical Characteristics
Electrical Characteristics for QSFP28
Parameter |
Symbol |
Min. |
Typ. |
Max. |
Units |
Notes |
|
Transmitter |
|||||||
Differential Data Input Swing |
Vout |
200 |
- |
1000 |
mV |
|
|
Input Differential Impedance |
ZD |
90 |
100 |
110 |
Ω |
|
|
ModSelL |
Module Select |
VOL |
VEE-0.3 |
- |
0.4 |
V |
|
Module Unselect |
VOH |
2.0 |
- |
VCC+0.3 |
V |
|
|
LPMode |
Low Power Mode |
VIL |
VEE-0.3 |
- |
0.8 |
V |
|
Normal Operation |
VIH |
2.0 |
- |
VCC+0.3 |
V |
|
|
ResetL |
Reset |
VIL |
VEE-0.3 |
- |
0.8 |
V |
|
Normal Operation |
VIH |
2.0 |
- |
VCC+0.3 |
V |
|
|
Receiver |
|||||||
Differential Data Output Swing |
Vin,P-P |
200 |
- |
1000 |
mVPP |
|
|
Output Differential Impedance |
ZD |
90 |
100 |
110 |
Ω |
|
|
ModPrsL |
Normal Operation |
VOL |
VEE-0.3 |
- |
0.4 |
V |
|
IntL |
Interrupt |
VOL |
VEE-0.3 |
- |
0.4 |
V |
|
Normal Operation |
VoH |
2.0 |
- |
VCC+0.3 |
V |
|
|
Bit Error Rate |
BER |
|
|
E-12 |
|
1 |
Electrical Characteristics for SFP28
Parameter |
Symbol |
Min. |
Typ. |
Max. |
Units |
Notes |
|||
Electrical Transmitter Characteristics |
|||||||||
Differential Data Input Swing |
Vin,P-P |
200 |
- |
1000 |
mVPP |
|
|||
Input Differential Impedance |
ZIN |
90 |
100 |
110 |
Ω |
|
|||
Tx_Fault |
Normal Operation |
VOL |
VEE-0.3 |
- |
0.4 |
V |
|
||
Transmitter Fault |
VOH |
2.0 |
- |
VCC+0.3 |
V |
|
|||
Tx_Disable |
Normal Operation |
VIL |
VEE-0.3 |
- |
0.8 |
V |
|
||
Laser Disable |
VIH |
2.0 |
- |
VCC+0.3 |
V |
|
|||
Electrical Receiver Characteristics |
|||||||||
Differential Date Output |
Vout |
200 |
- |
1000 |
mV |
|
|||
Output Differential Impedance |
ZD |
90 |
100 |
110 |
Ω |
|
|||
Rx_LOS |
Normal Operation |
VOL |
VEE-0.3 |
- |
0.4 |
V |
|
||
Lose Signal |
VoH |
2.0 |
- |
VCC+0.3 |
V |
|
|||
Bit Error Rate |
BER |
- |
- |
E-12 |
- |
|
Note: 1 PRBS2^31-1@25.78125Gbps
Revision record:
Date |
version |
change Description |
Author |
2020518 |
V0 |
First release |
WEI |