High-speed optocoupler is a semiconductor optoelectronic device that encapsulates a light-emitting device and a photosensitive device in the same shell, and transmits electrical signals through the conversion of electricity → light → electricity. Among them, the light-emitting devices are generally light-emitting diodes. There are many types of photosensitive devices. In addition to photodiodes, there are also phototransistors, photoresistors, photothyristors, etc. High-speed optocouplers can be combined into many series of optocouplers from different types of light-emitting devices and photosensitive devices according to different requirements.
The TDM501 series combines an aluminum gallium arsenide infrared emitting diode as the emitter, which is optically coupled to a silicon high-speed phototransistor in a plastic SOP5 package. The MPCM501 series features a rugged coplanar dual-die structure for the most stable isolation characteristics. Widely used in line receivers, telecommunications equipment, interfaces to CMOS-LSTTL-TTL, wide-bandwidth analog coupling, pulse transformer replacement, computer peripheral interfaces and other fields