Part Number : TLP521
Function : Photocoupler GaAs Ired & PhotoTransistor
Package : DIP 4, DIP 8 Pin type
Maker : Toshiba
Pinouts : 
Description :
The TOSHIBA TLP521, TLP521-1, TLP521-2 and TLP524-4 consist of a photo−transistor optically coupled to a gallium arsenide infrared emitting diode.
The TLP521−2 offers two isolated channels in an eight lead plastic DIP package, while the TLP521−4 provides four isolated channels in a sixteen plastic DIP package.
Features :
1 .Collector−emitter voltage: 55 V (min)
2. Current transfer ratio: 50% (min), Rank GB: 100% (min)
3. Isolation voltage: 2500 Vrms (min)
Datasheet PDF Download : 
Others datasheet of same file :
TLP-521, TLP521-1, TLP521-2, TLP521-4
