TOSHIBA PHOTOCOUPLER IRED & PHOTO-IC TLP718F Isolated Bus Drivers High Speed Line Receivers Microprocessor System Interfaces 4.58±0.25 654 TLP718F Unit: mm +0.2 5 0.1 5 3. 9 The Toshiba TLP718F consists of an infrared emitting diode and an integrated high-gain, high-speed photodetector. This unit is a 6-pin SDIP. The TLP718F is 50% smaller than the 8-PIN DIP and meets the reinforced insulation class requirements of international safety standards. Therefore the mounting area can be.