LTV-356T-B

The LTV-356T-B is an optocoupler, specifically a phototransistor optocoupler, 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, such as in power supplies, data communication, and industrial control systems.

Key Features:

1. Isolation Voltage: The LTV-356T-B typically offers a high isolation voltage, often around 5,000 Vrms, ensuring that the input and output circuits are electrically isolated from each other. This feature is crucial for protecting sensitive components from high voltages.

2. Input Configuration: The input side of the optocoupler consists of an infrared LED. When current flows through the LED, it emits infrared light, which is detected by the phototransistor on the output side. The forward voltage drop of the LED is typically around 1.2V, and it can handle a forward current of up to 20 mA.

3. Output Configuration: The output side features a phototransistor that is sensitive to the infrared light emitted by the LED. The phototransistor can switch on and off in response to the input signal, allowing for the transmission of digital signals across the isolation barrier. The output collector-emitter voltage can typically handle up to 30V.

4. Transfer Characteristics: The LTV-356T-B has a high current transfer ratio (CTR), which indicates the efficiency of the optocoupler in transferring input current to output current. The CTR can vary, but it is generally in the range of 50% to 600%, depending on the specific operating conditions.

5. Package Type: The device is housed in a compact, 4-pin DIP (Dual In-line Package) form factor, making it easy to integrate into various circuit designs. The small size allows for efficient use of PCB space.

6. Temperature Range: The LTV-356T-B is designed to operate over a wide temperature range, typically from -40°C to +100°C, making it suitable for use in various environmental conditions.

7. Applications: Common applications for the LTV-356T-B include signal isolation in microcontroller interfacing, switching power supplies, and data communication systems. It is also used in industrial automation and control systems where electrical isolation is necessary to protect sensitive components.

Summary:

The LTV-356T-B from Lite-On is a versatile and reliable optocoupler that provides excellent electrical isolation and signal transfer capabilities. Its compact design, high isolation voltage, and wide operating temperature range make it a popular choice for a variety of electronic applications where safety and performance are critical.