The LTV-816S-A is a single-channel, high-CTR (Current Transfer Ratio) phototransistor optocoupler from Lite-On Inc. It features a gallium arsenide infrared emitting diode which is optically coupled to a silicon planar phototransistor detector. This design allows for electrical isolation between the input and output circuits, making it suitable for various applications requiring signal transfer without direct electrical connection.

Applications:

• Programmable Logic Controllers (PLCs): Used for isolating input/output signals.
• Microcontroller Interfaces: Providing isolation between a microcontroller and external devices.
• Power Supplies: Implementing feedback control while maintaining isolation.
• Industrial Control Systems: General purpose isolation in industrial equipment.
• Telecommunications Equipment: Isolation in telecom interfaces.

Features:

• High Current Transfer Ratio (CTR): Ensures efficient signal transfer.
• High Isolation Voltage: Provides robust electrical isolation.
• Compact Package: Suitable for high-density board designs.
• RoHS Compliant: Meets environmental standards.
• Operating Temperature Range: Wide operating temperature range for diverse environments.

Benefits:

• Electrical Isolation: Protects sensitive circuits from voltage spikes and surges.
• Noise Reduction: Minimizes noise coupling between circuits.
• Enhanced Safety: Improves safety by isolating high-voltage and low-voltage circuits.
• Improved System Reliability: Reduces the risk of component damage due to electrical interference.
• Simplified Circuit Design: Simplifies design by enabling direct interfacing between circuits with different voltage levels.

Additional Details:

The LTV-816S-A typically comes in a 4-pin DIP (Dual In-line Package). The input side consists of an infrared LED, and the output side is a phototransistor. When current flows through the LED, it emits infrared light, which activates the phototransistor, allowing current to flow in the output circuit. Key specifications include a high isolation voltage (typically several kilovolts), a specified CTR range, and a maximum forward current for the LED. The device is designed for through-hole mounting on PCBs.