The NTE3223−1, NTE3223−2 and NTE3223−3 are a series of optically coupled isolators which consist of GaAs light emitting diodes and NPN silicon photo transmitters in space efficient dual−in−line plastic packages.

The NTE3223−1 comes in a 4−Lead DIP type package with an NPN transistor output. The NTE3223−2 contains a dual NPN transistor output and is supplied in a 8−Lead DIP type package. The NTE3223−4 contains a quad NPN transistor output and is supplied in a 16−Lead DIP type package.