25G SFP28 Active Optical Cable
CC-PMMAOCX-SD Pin Definition The SFP28 modules are hot-pluggable. Hot pluggable refers to plugging in or unplugging a module while the host board is powered. The SFP28 host connector is a 0.8 mm pitch 20 position right angle improved connector specified by SFF-8431, or stacked connector with equivalent electrical performance. SFP28 module contacts mates with the host in the order of ground, power, followed by signal as illustrated by Figure 1 and the contact sequence order listed in Table 1. Power Seq.: Pin engagement sequence during hot plugging. Notes: 1. The module signal ground contacts. 2. This pin is an open drain/collector and should be pulled up to Vcc-host in the host with a 4.7k~10k Ohm resistor. 3. This pin should be pulled up to VccT with a 4.7k~10k Ohm resistor in modules. 4. SDA&SCL (IIC) are needed pull up 4.7k~10k Ohm resistors on host board. 5. Mod_ABS is connected to VeeT or VeeR in the SFP28 module. 6. Rate Select 0, no connection required. 7. Module RX_Los of signal indication need pull up 4.7k~10k Ohm resistor on host board. 8. Rate Select 1, no connection required. 9. RD -/+: These are the differential receiver outputs. They are CML AC-coupled with 100 Ohm terminal resistor matching internal. 10. VccR and VccT are the receiver and transmitter power supplies. 11. TD-/+: These are the differential transmitter inputs. They are CML AC-coupled with 100 Ohm terminal resistor matching internal.
- Hot-pluggable SFP28 form factor
- Supports 25.78125Gb/s bit rate
- Maximum link length of 70m on OM3 MMF and 100m on OM4 MMF
- 850nm VCSEL laser and PIN photo detector
- Internal CDR on both Transmitter and Receiver channel
- Operating environment temperature range: 0 ~ +70℃
- Low power dissipation: ＜1.0W
- Single 3.3V power supply
- Data Center
- 25GBASE-SR Ethernet
- Infiniband EDR Applications
- 32G Fiber Channel Applications
- Compliant with SFF-8024、SFF-8431
- Compliant with IEEE802.3by
- Compliant with SFF-8472
- RoHS complaint
Product Details
CC-PMMAOCX-SD
Pin Definition
The SFP28 modules are hot-pluggable. Hot pluggable refers to plugging in or unplugging a module while the host board is powered. The SFP28 host connector is a 0.8 mm pitch 20 position right angle improved connector specified by SFF-8431, or stacked connector with equivalent electrical performance. SFP28 module contacts mates with the host in the order of ground, power, followed by signal as illustrated by Figure 1 and the contact sequence order listed in Table 1.
Power Seq.: Pin engagement sequence during hot plugging.
Notes:
1. The module signal ground contacts.
2. This pin is an open drain/collector and should be pulled up to Vcc-host in the host with a 4.7k~10k Ohm resistor.
3. This pin should be pulled up to VccT with a 4.7k~10k Ohm resistor in modules.
4. SDA&SCL (IIC) are needed pull up 4.7k~10k Ohm resistors on host board.
5. Mod_ABS is connected to VeeT or VeeR in the SFP28 module.
6. Rate Select 0, no connection required.
7. Module RX_Los of signal indication need pull up 4.7k~10k Ohm resistor on host board.
8. Rate Select 1, no connection required.
9. RD -/+: These are the differential receiver outputs. They are CML AC-coupled with 100 Ohm terminal resistor matching internal.
10. VccR and VccT are the receiver and transmitter power supplies.
11. TD-/+: These are the differential transmitter inputs. They are CML AC-coupled with 100 Ohm terminal resistor matching internal.
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