25GBASE-LR SFP28 1310nm 10km Hi-Optel HSFP28-2321 module
Descriptions
HSFP28-2321 is SFP28 module for duplex optical data communications support 25.78 Gb/s and 28.05 Gb/s data links. It is with the SFP+ 20-pin connector to allow hot plug capability. Digital diagnostic functions are available via an I2C. It has built-in dual clock and data recovery (CDR). This module is designed for single-mode fiber and operates at a nominal wavelength of 1310nm. The transmitter section uses a high performance 1310nm DFB laser and is a class 1 laser compliant according to International Safety Standard IEC-60825. The receiver section uses an integrated InGaAs detector pre-amplifier (IDP) mounted in an optical header and a limiting post-amplifier IC.
Features
● Compliant with MSA SFP+ Specification SFF-8402
● Monitoring Interface Compliant with SFF-8472
● Single +3.3V Power Supply
● Hot-Pluggable
● Built-in dual CDR
● Support 25.78 Gb/s and 28.05Gb/s Data Links
● Up to 10Km on 9/125um SMF
● Very low EMI and excellent ESD protection
● Operating Case Temperature: 0℃~+70℃
● Power Dissipation < 1.2W
● RoHS Compliant Products
Application
● 25GbE
● 32GFC
● Other Optical Links
Pin Description
|
Pin |
Symbol |
Name/Description |
Ref |
| 1 | VeeT | Transmitter Ground(Common with Receiver Ground) | 1 |
| 2 | Tx Fault | Transmitter Fault. Low normal operation, High Fault indication | |
| 3 | Tx Disable | Transmitter Disable. Laser output disabled on high or open | 2 |
| 4 | SDA | Module Definition 2.Data line for Serial ID | 3 |
| 5 | SCL | Module Definition 1.Clock line for Serial ID | 3 |
| 6 | MOD-ABS | Module Definition 0.Grounded within the module | |
| 7 | RS0 | Rate Select 0, optionally controls SFP28 module receiver. LVTTL Logic. | 5 |
| 8 | LOS | Loss of Signal indication. Logic 0 indicates normal operation. | 4 |
| 9 | RS1 | Rate Select 1, optionally controls SFP28 module transmitter. LVTTL Logic. | 5 |
| 10 | VeeR | Receiver Ground(Common with Transmitter Ground) | 1 |
| 11 | VeeR | Receiver Ground(Common with Transmitter Ground) | 1 |
| 12 | RD- | Receiver Inverted DATA out.AC Coupled | |
| 13 | RD+ | Receiver Non-inverted DATA out.AC Coupled | |
| 14 | VeeR | Receiver Ground(Common with Transmitter Ground) | 1 |
| 15 | VccR | Receiver Power Supply | |
| 16 | VccT | Transmitter Power Supply | |
| 17 | VeeT | Transmitter Ground(Common with Receiver Ground) | 1 |
| 18 | TD+ | Transmitter Non-inverted DATA in.AC Coupled | |
| 19 | TD- | Transmitter Inverted DATA in.AC Coupled | |
| 20 | VeeT | Transmitter Ground(Common with Receiver Ground) | 1 |
Notes:
1. Circuit ground is internally isolated from chassis ground. VeeR and VeeT may be internally connected within the SFP28 module.
2. Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V.
3. Should be pulled up with 4.7k – 10kohms on host board to a voltage between 2.0V and 3.6V.
4. LOS is open collector output. Should be pulled up with 4.7k – 10kohms on host board to a voltage between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.
5. Pulled low to VeeR or VeeT with a >30K resistor within the SFP28 module.
