FTCS-B4512-H6Dxx Overview
High-performance 1.25Gbps BIDI SFP transceiver, single-mode fiber up to 160km. 1490nm DFB laser transmitter + 1550nm APD photo detector, SFF-8472 DDM, hot-pluggable, single LC receptacle, RoHS compliant, single +3.3V supply.
Features
- Up to 1.25Gbps
- Hot-pluggable SFP
- 1490nm DFB + 1550nm APD, 160km SMF
- SFP MSA + SFF-8472 compliant, LC receptacle
- RoHS compliant
- Single +3.3V supply
- Digital Diagnostic Monitoring
- Standard: 0~+70°C / Industrial: -40~+85°C
Applications
- 1.25Gbps Optical systems
- Gigabit Ethernet
- 1.063Gbps Fiber Channel
Functional Diagram
Absolute Maximum Ratings
| Parameter | Symbol | Min | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | Vcc | -0.5 | 4.5 | V |
| Storage Temperature | Ts | -40 | +85 | °C |
| Operating Humidity | – | 5 | 85 | % |
Recommended Operating Conditions
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Case Temp | Standard | 0 | – | +70 | °C |
| Case Temp | Extended | -20 | – | +80 | °C |
| Case Temp | Industrial | -40 | – | +85 | °C |
| Supply Voltage | Vcc | 3.135 | 3.30 | 3.465 | V |
| Supply Current | Icc | – | 300 | – | mA |
| Data Rate | – | 0.1 | 1.25 | – | Gbps |
Optical & Electrical Characteristics
Transmitter
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Centre Wavelength | λc | 1470 | 1490 | 1510 | nm |
| Spectral Width (-20dB) | Δλ | – | – | 1 | nm |
| Side-Mode Suppression | SMSR | 30 | – | – | dB |
| Avg Output Power | Pout | 1 | – | +5 | dBm |
| Extinction Ratio | ER | 9.0 | – | – | dB |
| Input Swing | VIN | 180 | – | 1200 | mV |
| Input Impedance | ZIN | 90 | 100 | 110 | Ω |
| TX Disable | – | 2.0 | – | Vcc | V |
| TX Enable | – | 0 | – | 0.8 | V |
| TX Fault | – | 2.0 | – | Vcc | V |
Receiver
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Centre Wavelength | λc | 1530 | 1550 | 1570 | nm |
| Sensitivity | – | – | – | -32 | dBm |
| Overload | – | -7 | – | – | dBm |
| LOS De-Assert | LOSD | – | – | -33 | dBm |
| LOS Assert | LOSA | -40 | – | – | dBm |
| LOS Hysteresis | – | 0.5 | – | 4 | dB |
| Output Swing | Vout | 600 | 800 | 1000 | mV |
| LOS High | – | 2.0 | – | Vcc | V |
Timing Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Tx Disable Negate Time | – | – | 1 | ms |
| Tx Disable Assert Time | – | – | 10 | µs |
| Time To Initialize | – | – | 300 | ms |
| Tx Fault Assert Time | – | – | 100 | µs |
| LOS Assert/De-assert | – | – | 100 | µs |
| Serial ID Clock | – | 100 | 400 | KHz |
Diagnostics (Internal Calibration)
| Parameter | Range | Unit | Accuracy |
|---|---|---|---|
| Temperature | 0~+70 / -40~+85 | °C | ±3°C |
| Voltage | 3.0~3.6 | V | ±3% |
| Bias Current | 0~100 | mA | ±10% |
| TX Power | 1~+5 | dBm | ±3dB |
| RX Power | -32~-7 | dBm | ±3dB |
Pin Descriptions
| Pin | Signal | Description |
|---|---|---|
| 1 | VEET | Transmitter Ground |
| 2 | TX_FAULT | Fault Indication (open collector) |
| 3 | TX_DISABLE | Laser Disable (>2.0V=off, <0.8V=on) |
| 4 | SDA | Serial Data (I2C) |
| 5 | SCL | Serial Clock (I2C) |
| 6 | MOD_ABS | Module Absent (GND within module) |
| 7 | RS0 | Not Connected |
| 8 | LOS | Loss of Signal (open collector) |
| 9-11 | VEER | Receiver Ground |
| 12 | RD- | Inv. Received Data Out (AC-coupled) |
| 13 | RD+ | Received Data Out (AC-coupled) |
| 14 | VEER | Receiver Ground |
| 15 | VCCR | Receiver Power Supply |
| 16 | VCCT | Transmitter Power Supply |
| 17 | VEET | Transmitter Ground |
| 18 | TD+ | Transmit Data In (AC-coupled) |
| 19 | TD- | Inv. Transmit Data In (AC-coupled) |
| 20 | VEET | Transmitter Ground |
Recommended Interface Circuit
Mechanical Dimensions
Ordering Information
| Part Number | Description |
|---|---|
| FTCS-B4512-H6D | 1490T/1550R, 1.25Gbps, 160km, DDM, 0~+70°C |
| FTCS-B4512-H6DI | 1490T/1550R, 1.25Gbps, 160km, DDM, -40~+80°C |
F-tone Networks SFP transceiver product line. Typical specifications, confirm in writing for orders. Specifications subject to change without notice. Further details from F-tone sales representatives.
