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SUPERVISORY/VOLTAGE MONITOR CIRCUITS
Application Note 609: Jun 01, 2001
Tiny IC Debounces Pushbutton Switch When a push-button is used to manually reset a µP, ringing from the switch may cause a false reset output signal when the switch is press and de-pressed. Maxim's microprocessor supervisors have a debounced manual reset input to help ignore this ringing.
Though they're not complicated, schemes for debouncing a pushbutton switch usually entail using several logic gates. It's easy to include such circuits in an ASIC. Adding a debouncer as a last-minute design change, however, can be inconvenient. In such cases, the circuit in the figure below can come in handy. The circuit, using only a 4-pin SO-package IC, squares up and debounces a pushbutton signal.
AN6095SH Datasheet
