onsemi MID400M

The MID400M 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. The MID400M has been designed solely for the use as an AC line monitor. It is recommended for use in any AC−to−DC control application where excellent optical isolation, solid state reliability, TTL compatibility, small size, low power, and low frequency operations are required.

• Direct Operation from any Line Voltage with the Use of an External Resistor
• Externally Adjustable Time Delay
• Externally Adjustable AC Voltage Sensing Level
• Logic Level Compatibility
• Safety and Regulatory Approvals: UL1577, 5,000 VACRMS for 1 Minute; DIN−EN/IEC60747−5−5, 890 V Peak Working Insulation Voltage

• 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