The MOCD213 is a two-channel optoisolator featuring two independent channels of optically coupled inputs and outputs. Manufactured by Fairchild/ON Semiconductor, it provides electrical isolation between input and output circuits, making it suitable for applications requiring high levels of safety and noise immunity. Each channel consists of an infrared emitting diode (IRED) and a silicon phototransistor, enabling the transmission of digital signals while maintaining electrical isolation.

Applications

• Digital Logic Isolation: Used to isolate digital logic circuits from noisy or high-voltage environments.
• Microcontroller Interfaces: Provides isolated communication between microcontrollers and external peripherals.
• Power Supply Isolation: Offers isolation in feedback and control circuits for power supplies.
• Industrial Control Systems: Integrated into control systems to isolate sensitive components from high-voltage or noisy circuits.
• Data Acquisition Systems: Provides isolated data transmission in data acquisition applications.

Features

• Dual-Channel Isolation: Offers two independent isolation channels in a single package.
• High Isolation Voltage: Provides a high degree of electrical isolation between input and output.
• Low Input Current: Requires minimal input current for activation.
• High Current Transfer Ratio (CTR): Ensures efficient signal transfer between input and output.
• Compact Package: Typically available in a DIP package for easy integration.

Benefits

• Enhanced Safety: Isolates sensitive control circuits from high-voltage transients and noise.
• Improved Reliability: Robust design ensures stable and reliable performance in demanding environments.
• Simplified Design: Simplifies the design of isolated interface circuits.
• Efficient Signal Transfer: High CTR ensures efficient signal transmission between circuits.
• Cost-Effective: Provides two isolation channels in a single package, reducing component count and cost.

Additional Details

The MOCD213 typically features an isolation voltage of 2.5 kV or higher and a current transfer ratio (CTR) that can range from 20% to 300% depending on the specific part number and operating conditions. It requires a low input forward current, typically in the range of 1 to 10 mA, making it suitable for use with low-power logic circuits. The device is commonly available in an 8-pin DIP package, facilitating easy integration into printed circuit boards. Key considerations for using the MOCD213 include its operating temperature range, forward voltage, and collector-emitter voltage, which should be carefully evaluated based on the specific application requirements. Its compliance with industry safety standards further enhances its suitability for use in a variety of industrial and commercial applications, particularly where multiple isolated channels are needed.