东芝TLP797GA替代群芯微光耦合器QXV254美林美深

光学特性
输入发光二极管：通常采用高效的砷化镓（GaAs）或磷化铟（InP）等材料制成，其正向电压一般在 1.2V 到 1.5V 之间，正向电流典型值约为 5mA 到 20mA，能够在较低的电流下产生足够强度的光信号，确保光耦的正常工作和信号传输。
输出光电探测器：与输入发光二极管光学耦合，具有较高的光电转换效率，可将接收到的光信号快速、准确地转换为电信号，其光谱响应范围通常与输入发光二极管的发光波长相匹配，以实现最佳的光电转换效果。
Input light emitting diode: usually made of high-efficiency gallium arsenide (GaAs) or indium phosphide (InP) and other materials, its forward voltage is generally between 1.2V and 1.5V, and the typical forward current value is about 5mA to 20mA, which can generate sufficient intensity optical signal at a lower current to ensure the normal operation of the optocouple and signal transmission.
Output photodetector: optically coupled with the input light-emitting diode, with high photoelectric conversion efficiency, the received light signal can be quickly and accurately converted into an electrical signal, and its spectral response range is usually matched with the luminous wavelength of the input light-emitting diode to achieve the best photoelectric conversion effect.

电学特性
电流传输比：一般在 100% 到 500% 之间，较高的电流传输比意味着在输入侧给定一定电流时，输出侧能够获得相对较大的电流，从而可以更好地驱动后续电路，适用于需要较大驱动电流的负载。
输入输出电容：输入输出之间的电容一般在几个皮法到几十皮法之间，较低的电容值有助于减少信号传输过程中的延迟和失真，提高信号的传输速度和质量，特别是在高频信号传输时更为重要。
集电极 - 发射极饱和电压：当输出晶体管处于饱和导通状态时，集电极 - 发射极之间的饱和电压通常在 0.2V 到 0.4V 左右，较低的饱和电压可以降低输出级的功耗，提高光耦的效率和可靠性。
Current transmission ratio: Generally between 100% and 500%, the higher current transmission ratio means that when the input side is given a certain current, the output side can obtain a relatively large current, so that the subsequent circuit can be better driven, suitable for the load that requires a larger drive current.
Input and output capacitance: The capacitance between the input and output is generally between several picomethods and dozens of picomethods, and the lower capacitance value helps to reduce the delay and distortion in the signal transmission process, improve the transmission speed and quality of the signal, especially when the high-frequency signal transmission is more important.
Collector-emitter saturation voltage: When the output transistor is in a saturated on-state, the saturation voltage between the collector-emitter is usually around 0.2V to 0.4V, and the lower saturation voltage can reduce the power consumption of the output stage and improve the efficiency and reliability of the optocoupler.

传输特性
传输速度：具有较高的传输速度，能够满足高速数字信号的传输需求，其传播延迟时间一般在纳秒级别，典型值约为 20ns 到 50ns 左右，可确保输入信号和输出信号之间的快速同步，减少信号传输延迟对系统性能的影响。
共模抑制比：较高，通常可达 10kV/μs 以上，能够有效抑制共模信号的干扰，在存在共模噪声的环境中，如工业现场的强电磁干扰或长距离传输线路中的共模干扰等，能保证信号的准确传输和系统的正常运行。
Transmission speed: It has a high transmission speed, which can meet the transmission needs of high-speed digital signals, and its propagation delay time is generally at the nanosecond level, with a typical value of about 20ns to 50ns, which can ensure the rapid synchronization between the input signal and the output signal, and reduce the impact of signal transmission delay on system performance.
Common mode rejection ratio: high, usually up to 10kV/μs or more, can effectively inhibit the interference of common mode signals, in the presence of common mode noise in the environment, such as strong electromagnetic interference in industrial sites or common mode interference in long-distance transmission lines, to ensure the accurate transmission of signals and the normal operation of the system.

隔离特性
隔离电压：输入和输出之间的隔离电压高达 3750V rms 或更高，具有出色的电气隔离性能，能有效防止输入侧的高电压、大电流等电气干扰对输出侧电路的影响，保障系统的安全性和稳定性，适用于各种需要电气隔离的场合，如工业自动化、电力电子设备、通信基站等。
绝缘电阻：通常在数千兆欧以上，高绝缘电阻可进一步减少漏电流，降低电气干扰的可能性，确保隔离效果的可靠性。
Isolation voltage: The isolation voltage between the input and output is as high as 3750V rms or higher, with excellent electrical isolation performance, which can effectively prevent the input side of high voltage, high current and other electrical interference on the output side of the circuit, to ensure the safety and stability of the system, suitable for a variety of occasions requiring electrical isolation, such as industrial automation, power electronic equipment, communication base stations, etc.
Insulation resistance: usually above thousands of megohm, high insulation resistance can further reduce leakage current, reduce the possibility of electrical interference, and ensure the reliability of the isolation effect.

工作条件
工作温度范围：一般为 - 40℃到 + 125℃，宽温度范围使得该光耦能够在恶劣的环境条件下稳定工作，无论是在高温的工业现场还是在低温的户外设备中，都能保持良好的性能，可适应各种不同的工作环境，如汽车电子、航空航天、户外通信基站等领域。
Operating temperature range: generally -40 ℃ to + 125℃, the wide temperature range makes the optocoupler can work stably under harsh environmental conditions, whether it is in the high temperature industrial site or in the low temperature outdoor equipment, can maintain good performance, can be adapted to a variety of different working environments, such as automotive electronics, aerospace, outdoor communication base stations and other fields.

电源电压：输入侧和输出侧的电源电压范围较宽，输入侧一般可在 3V 到 5V 之间正常工作，输出侧可在 5V 到 15V 之间稳定运行，能够与多种不同的电源系统兼容，方便在各种电路中进行应用和设计。
The input side and the output side of the power supply voltage range is wide, the input side can generally work between 3V and 5V, the output side can run stably between 5V and 15V, and can be compatible with a variety of different power systems, convenient for application and design in various circuits.

封装特性
封装形式：采用标准的 DIP、SOP 或 SMD 等封装形式，具有良好的机械稳定性和电气连接可靠性，易于焊接和安装，可适应手工焊接和自动化贴片生产等多种生产工艺，在电路板上的布局也较为灵活，能够满足不同的电路设计需求。
引脚间距：引脚间距适中，通常为 2.54mm 或更小，有利于在高密度电路板上进行布局和布线，减少电路板的尺寸和成本。
Package form: The standard DIP, SOP or SMD package form, with good mechanical stability and electrical connection reliability, easy to weld and install, can adapt to manual welding and automatic patch production and other production processes, the layout on the circuit board is also more flexible, to meet different circuit design needs.

审核编辑 黄宇