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The TLP781F (D4GR-TP7,F) is an optocoupler manufactured by Toshiba. It is a single channel phototransistor output device with an AC isolated Digital Output Interface. It has a peak output voltage of 5.0V and a maximum output current of 10mA. The TLP781F offers a high degree of isolation between input and output, with a guaranteed minimum working isolation voltage of 3kVrms. It is also certified to safety standards including UL, CSA, and VDE.