MAX6817 Datasheet

• Switch Debouncer Integration Simplifies System Interface to Mechanical Switches
  • Single-Supply Operation from +2.7V to +5.5V
  • No External Components Required
  • Dual (MAX6817), Versions Available
  • 6µA Supply Current
• Built-In Protection Circuitry Improves System Reliability
  • Inputs Can Exceed Power Supplies up to ±25V
  • ESD Protection for Input Pins
    • ±15kV—Human Body Model
    • ±8kV—IEC 1000-4-2, Contact Discharge
    • ±15kV—IEC 1000-4-2, Air-Gap Discharge

• µP Switch Interfacing
• Industrial Instruments
• Membrane Keypads
• PC-Based Instruments
• Portable Instrumentation

The MAX6817 are dual switch debouncers that provide clean interfacing of mechanical switches to digital systems. They accept one or more bouncing inputs from a mechanical switch and produce a clean digital output after a short, preset qualification delay. Both the switch opening bounce and the switch closing bounce are removed. Robust switch inputs handle ±25V levels and are ±15kV ESD-protected for use in harsh industrial environments. They feature single-supply operation from +2.7V to +5.5V. Undervoltage lockout circuitry ensures the output is in the correct state upon power-up.

The dual MAX6817 are offered in SOT packages and require no external components. Their low supply current makes them ideal for use in portable equipment.