Description
The MID400 is an optically isolated AC line-to-logic interface device. It is packaged in an 8-lead plastic DIP. The AC line voltage is monitored by two back-to-back GaAs LED diodes in series with an external resistor. A high gain detector circuit senses the LED current and drives the output gate to a logic low condition.

FEATUREs
■ Direct operation from any line voltage with the use of
   an external resistor.
■ Externally adjustable time delay
■ Externally adjustable AC voltage sensing level
■ High voltage isolation between input and output
■ Compact plastic DIP package
■ Logic level compatibility
■ UL recognized (File #E90700)
■ VDE recognized (file #102915), – add option V (e.g.,
   MID400V)

APPLICATIONs
■ Monitoring of the AC/DC “line-down” condition
■ “Closed-loop” interface between electromechanical
   elements such as solenoids, relay contacts, small
   motors, and microprocessors
■ Time delay isolation switch