Overview
The FOD8012A is a high-speed logic gate optocoupler produced by onsemi. It is designed for isolated communications, allowing digital signals to be transmitted between systems without conducting ground loops or hazardous voltages. This half-duplex, bi-directional optocoupler utilizes onsemi’s patented coplanar packaging technology, OPTOPLANAR®, and optimized IC design to achieve a minimum 20 kV/μs Common Mode Noise Rejection (CMR) rating. The device is highly integrated with 2 optically coupled channels and is housed in a compact 8-pin small outline package (SOIC8).
Key Specifications
| Parameter | Min. | Typ. | Max. | Units |
|---|---|---|---|---|
| Data Rate | - | - | 15 Mbit/s | - |
| Propagation Delay Time to Logic Low Output (tPHL) | 37 | - | 60 ns | ns |
| Propagation Delay Time to Logic High Output (tPLH) | 40 | - | 60 ns | ns |
| Pulse Width Distortion (PWD) | 3 | - | 15 ns | ns |
| Supply Voltage (VDD1, VDD2) | 0 | - | 6.0 V | V |
| Operating Temperature (TOPR) | -40 | - | +110 °C | °C |
| Input-Output Isolation Voltage (VISO) | 3750 | - | - | VACRMS |
Key Features
- Half-duplex, bi-directional configuration
- High-speed operation: 15 Mbit/s data rate, 60 ns maximum propagation delay, and 15 ns maximum pulse width distortion
- High Common Mode Noise Rejection (CMR): minimum 20 kV/μs
- 3.3 V and 5 V CMOS compatibility
- Extended industrial temperature range: -40 to +110°C
- Safety and regulatory approvals: UL1577, DIN EN/IEC60747-5-5 (approval pending)
- Compact 8-pin SOIC package
Applications
- Industrial fieldbus communications: DeviceNet, CAN, RS485
- Microprocessor system interface: SPI, I2C
- Programmable logic control
- Isolated data acquisition systems
- Voltage level translators
Q & A
- What is the primary function of the FOD8012A optocoupler?
The FOD8012A is designed for isolated communications, allowing digital signals to be transmitted between systems without conducting ground loops or hazardous voltages.
- What is the data rate of the FOD8012A?
The FOD8012A supports a data rate of up to 15 Mbit/s.
- What is the propagation delay of the FOD8012A?
The maximum propagation delay is 60 ns for both logic low and logic high outputs.
- What is the operating temperature range of the FOD8012A?
The operating temperature range is -40 to +110°C.
- What are the safety and regulatory approvals for the FOD8012A?
The FOD8012A has approvals from UL1577 and is pending approval for DIN EN/IEC60747-5-5.
- What package type is the FOD8012A available in?
The FOD8012A is available in an 8-pin SOIC package.
- What is the input-output isolation voltage of the FOD8012A?
The input-output isolation voltage is 3750 VACRMS for 1 minute.
- Is the FOD8012A compatible with 3.3 V and 5 V CMOS systems?
Yes, the FOD8012A is compatible with both 3.3 V and 5 V CMOS systems.
- What are some common applications of the FOD8012A?
Common applications include industrial fieldbus communications, microprocessor system interfaces, programmable logic control, isolated data acquisition systems, and voltage level translators.
- What is the typical power consumption of the FOD8012A?
The typical logic low supply current is 5.8 mA, and the typical logic high supply current is 2.5 mA, depending on the supply voltage and operating conditions.
