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