LTV-817S-TA1-B
SMD optocouplers with transistor output for DC signal isolation
Manufacturer： ['liteon', 'lite-on']
series introduction
# Introduction to the LTV - 817S - TA1 - B Product Series
## 1. Overview
The LTV - 817S - TA1 - B product series belongs to the optocoupler category. Optocouplers, also known as optoisolators, are essential components in modern electronic circuits. They play a crucial role in providing electrical isolation between two circuits while allowing the transfer of signals. The LTV - 817S - TA1 - B series is designed to offer high - performance, reliable, and cost - effective solutions for a wide range of applications.
## 2. Key Features
### 2.1 Electrical Isolation
One of the primary features of the LTV - 817S - TA1 - B series is its excellent electrical isolation capability. It can isolate the input and output circuits effectively, preventing electrical interference and noise from being transferred between them. This isolation helps in protecting sensitive components in the output circuit from high - voltage transients or electrical noise generated in the input circuit. The isolation voltage of this series is typically rated at a high level, ensuring reliable operation in various electrical environments.
### 2.2 High Current Transfer Ratio (CTR)
The series offers a relatively high current transfer ratio. The CTR is defined as the ratio of the output current (collector current in the case of a phototransistor - based optocoupler) to the input current (LED current). A high CTR means that a small input current can control a relatively large output current. This feature makes the LTV - 817S - TA1 - B suitable for applications where signal amplification or power control is required.
### 2.3 Low Input Power Consumption
The input LED of the LTV - 817S - TA1 - B consumes relatively low power. This is beneficial in battery - powered or energy - efficient applications, as it helps to reduce the overall power consumption of the system. The low input power requirement also allows for easy integration with low - power microcontrollers and other low - power electronic devices.
### 2.4 Fast Response Time
The optocouplers in this series have a fast response time. They can quickly switch between the on and off states, enabling them to handle high - frequency signals. This fast response characteristic is crucial in applications such as high - speed data communication, pulse - width modulation (PWM) control, and switching power supplies.
### 2.5 Wide Operating Temperature Range
The LTV - 817S - TA1 - B series is designed to operate over a wide temperature range. This makes it suitable for use in various environmental conditions, from industrial settings with high - temperature requirements to outdoor applications where the temperature can vary significantly. The wide operating temperature range ensures the stability and reliability of the optocoupler's performance under different thermal conditions.
## 3. Package and Pin Configuration
### 3.1 Package Type
The LTV - 817S - TA1 - B is typically available in a small - outline package (SOP). The SOP package offers several advantages, including a compact size, which is beneficial for printed circuit board (PCB) design, especially in applications where space is limited. It also provides good mechanical stability and ease of handling during the assembly process.
### 3.2 Pin Configuration
The optocoupler has a well - defined pin configuration. The input side usually consists of two pins for the LED, which are used to supply the input current. The output side has pins for the phototransistor, including the collector, emitter, and sometimes a base pin (although in many cases, the base is not externally connected). The clear pin configuration simplifies the circuit design and connection process, allowing for easy integration into different electronic systems.
## 4. Applications
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