TLP321,TLP321-2,TLP321-4 TOSHIBA Photocoupler GaAs Ired & Photo Transistor TLP321, TLP321-2, TLP321-4 Programmable Controllers DC Output Module Telecommunication The TOSHIBA TLP321, 2 and 4 consist of a photo transistor optically coupled to a gallium arsenide infrared emitting diode.
The TLP321 2 offers two isolated channels in an eight lead plastic DIP package, while the TLP321 4 provides four isolated channels in a sixteen plastic DIP