The LTV-816-A4 is a single-channel phototransistor optocoupler manufactured by Lite-On Inc. It provides electrical isolation between input and output circuits, making it suitable for a wide range of applications where safety and signal integrity are critical.

Applications

• Programmable Logic Controllers (PLCs)
• Microcontroller input/output isolation
• Power supply feedback control
• Industrial control systems
• Signal transmission between circuits with different ground potentials

Features

• High isolation voltage: Ensures safe operation by preventing high voltage from reaching sensitive circuits.
• Compact package: Allows for high-density mounting on PCBs.
• CTR (Current Transfer Ratio): Offers a specific current transfer ratio, ensuring predictable performance.
• High collector-emitter voltage: Supports a wide range of input voltages.
• RoHS compliant: Meets environmental standards for hazardous substances.

Benefits

• Enhanced safety: Provides electrical isolation, protecting operators and equipment.
• Improved signal integrity: Prevents ground loops and noise from affecting signal transmission.
• Simplified circuit design: Reduces the need for complex isolation techniques.
• Increased system reliability: Prevents damage from voltage spikes and surges.
• Cost-effective isolation solution: Provides a simple and affordable way to achieve electrical isolation.

Additional Details

The LTV-816-A4 optocoupler consists of an infrared emitting diode (IRED) and a phototransistor. When current flows through the IRED, it emits light, which activates the phototransistor. This allows current to flow from the collector to the emitter of the phototransistor, providing an isolated signal path.

The current transfer ratio (CTR) is a key parameter, indicating the ratio of output current to input current. The A4 suffix likely designates a specific CTR range for this part. The high isolation voltage is crucial for safety, especially in industrial applications where high voltages are present.