Isocom, ISP814XSM AC Input Phototransistor Output Optocoupler, Surface Mount, 4-Pin DIP

The ISP814, ISP824, ISP844 series of optical coupled isolators consist of two infrared light emitting diodes connected in inverse parallel and NPN silicon photo transistors in space efficient dual in line plastic packages.

High Isolation Voltage (5.3kVRMS,7.5kVPK)
AC or polarity insensitive input
All electrical parameters 100% tested
Computer terminals
Industrial systems controllers
Telephone sets, Telephone exchangers
Signal transmission between systems of
different potentials and impedances