ELM409 - Versatile Debounce Circuit

The ELM409 is digital filter circuit that is used to interface mechanical contacts to electronic circuits.

All mechanical contacts, whether from switches, relays, etc.

will have inherent ‘bounce’ when they make or break a connection.

• Standard and extra long debounce times Schmitt input provides hysteresis Complementary circuit outputs Needs no external timing components Low power CMOS design - typically 1 mA at 5V Wide supply range - 3.0 to 5.5 volt operation High current drive outputs Connection Diagram PDIP and SOIC (top view) VDD 1 2 3 4 8 7 6 5 VSS Out Out In.