EL213(TB)-V

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Optoisolators, also known as optocouplers or optical couplers, are electrical isolation components used to isolate electrical signals between two devices. The EL213(TB)-V is one type of optoisolator, specifically a Transistor, Photovoltaic Output type. It offers enhanced performance and system reliability in a wide range of industrial, consumer, and automotive applications.

The EL213(TB)-V consists of a gallium arsenide infrared-emitting diode (IRED) with phototransistors detectors in a 4-pin dual-in-line package. It provides strong isolation between input and output, and features back-to-back protection, which prevents current flow between the LED and the output phototransistor even when the input voltage is shorted to the output voltage. This feature makes EL213(TB)-V suitable for applications that require bidirectional communication or isolation for high-speed data transmission.

The input circuit of the EL213(TB)-V is composed of the IRED emitting diode and a series resistor. When an input signal is applied to the terminal D+, it causes the diode to emit infrared radiation, which is directed to the detector circuit consisting of two phototransistors. This causes both phototransistors to be turned on, which in turn sends an output signal to the output terminals. The output circuit is composed of the two phototransistors and resistors. The phototransistors are optically coupled to the correspondingly connected output terminal, and the output is then switched when the input voltage is within the specified range.

The EL213(TB)-V offers many different types of applications. In industrial and consumer applications, it can be used to isolate signal paths, providing noise-free transmission, and to protect sensitive circuits against electrical surges. This type of optoisolator is also used in automotive applications, such as in powertrain control and for sensors. It can also be used in signal isolation for high-speed data transmission, providing error-free data transmission and reliable system operation.

The EL213(TB)-V is a high-performance optoisolator, offering excellent noise immunity, wide optical coupling range, and low-power consumption. It can also withstand extreme environmental conditions and offers back-to-back protection from current flow between the LED and output phototransistors. This makes the EL213(TB)-V the ideal choice for applications requiring reliable electrical isolation and signal transmission.

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