Lite-On Technology 4N25S-TA1

The Lite-On Technology4N25S-TA1 is an optocoupler isolator that combines a phototransistor optically coupled to a gallium arsenide infrared-emitting diode. It is designed for digital logic ground isolation, input/output buffering, analog signal ground isolation, and voltage level shifting. Functions: The primary function of the 4N25S-TA1 is to provide electrical isolation and signal transfer between input and output circuits. It blocks high voltage, transients, and noise from reaching sensitive circuits, providing a secure and stable electrical connection. Applications: This isolator is commonly used in applications such as switch mode power supplies, industrial controls, computer terminals, and consumer electronics. It is also suitable for interfacing with microcontrollers and PLCs. Alternative Parts: Some alternative optocoupler isolators similar to the 4N25S-TA1 include the Vishay SFH620A, Toshiba TLP621, and Fairchild H11L1M. Embedded Modules: The 4N25S-TA1 can be incorporated into embedded systems for isolation and communication between different voltage domains within the system, such as in motor control, power monitoring, and isolation of communication interfaces. Q&A: 1. Q: What are the maximum forward and reverse voltage ratings for the 4N25S-TA1? A: The maximum forward and reverse voltage ratings are typically 1.5V and 6V, respectively. 2. Q: Can the 4N25S-TA1 be used for frequency modulation applications? A: Yes, it can be used for frequency modulation applications where electrical isolation is required. 3. Q: What is the typical input-output isolation voltage for the 4N25S-TA1? A: The typical input-output isolation voltage is around 5000V. 4. Q: Is the 4N25S-TA1 suitable for high-speed digital signal isolation? A: The 4N25S-TA1 has a typical response time suitable for digital signals but may not be suitable for very high-speed applications. 5. Q: What are the temperature range and package type for the 4N25S-TA1? A: The 4N25S-TA1 typically operates within a temperature range of -40°C to +85°C and is available in a 6-pin DIP package.