LTV-817-A

The LTV-817-A is an optocoupler, also known as an opto-isolator, manufactured by Lite-On. It is designed to provide electrical isolation between its input and output, making it ideal for applications where signal integrity and safety are paramount.

Key Features:

1. Construction: The LTV-817-A consists of a gallium arsenide (GaAs) infrared LED and a phototransistor housed in a compact, dual-in-line package (DIP). This configuration allows for easy integration into various electronic circuits.

2. Isolation Voltage: The device offers a high isolation voltage, typically around 5,000 volts RMS, ensuring that the input and output sides are electrically isolated from each other. This feature is crucial for protecting sensitive components from high voltages and transients.

3. Input Characteristics: The input side of the LTV-817-A features a forward voltage drop of approximately 1.2 volts at a forward current of 10 mA. The LED has a peak wavelength of around 950 nm, which is in the infrared spectrum, making it invisible to the naked eye.

4. Output Characteristics: The output side consists of a phototransistor that can handle collector currents up to 50 mA. The transistor has a current transfer ratio (CTR) typically ranging from 100% to 600% at a collector-emitter voltage of 5 volts, allowing for efficient signal transmission.

5. Temperature Range: The LTV-817-A operates effectively over a wide temperature range, typically from -40°C to +85°C, making it suitable for various environmental conditions.

6. Applications: This optocoupler is commonly used in switching power supplies, microcontroller interfacing, signal isolation, and data communication systems. Its ability to isolate different parts of a circuit while allowing for signal transfer makes it a versatile component in both consumer and industrial electronics.

7. Pin Configuration: The LTV-817-A typically features a 4-pin configuration, with pins designated for the anode and cathode of the LED, and the collector and emitter of the phototransistor. This layout facilitates straightforward integration into circuit boards.

Summary:

The LTV-817-A from Lite-On is a reliable and efficient optocoupler that provides essential electrical isolation in various electronic applications. Its robust design, high isolation voltage, and wide operating temperature range make it a preferred choice for engineers looking to enhance the safety and performance of their electronic systems.