Description
The ELM411 provides all of the necessary circuitry to connect as many as three independent mechanical contacts to an electronic circuit.

Features
• Low power CMOS design - typically 1mA at 5V
• Wide supply range - 3.0 to 5.5 volt operation
• Simultaneous monitoring of three circuits
• Full 25msec debounce period on contact closure and opening, without external components
• Internal pullup resistors for contact monitoring
• High current drive outputs - up to 25 mA
• Can be cascaded to provide sequential outputs

Applications
• Pushbutton interface for logic circuits
• Limit switch monitoring
• Time delay generation