深圳市中立信电子科技有限公司

MAX6817EUT+T

监控电路 Dual Switch Debouncer

±15kV ESD-Protected, Single/Dual/Octal,  CMOS Switch Debouncers

General Description MAX6817EUT+T

The MAX6816/MAX6817/MAX6818 are single, dual, and  octal 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.

Benefits and Features MAX6817EUT+T

● Switch Debouncer Integration Simplifies System

Interface to Mechanical Switches

• Single-Supply Operation from +2.7V to +5.5V

• No External Components Required

• Single (MAX6816), Dual (MAX6817), and

Octal (MAX6818) 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

● Octal Version (MAX6818) Provides Direct Data Bus Interface

• Three-State Outputs for Directly Interfacing to μP (MAX6818)

• Switch Change-of-State Output Simplifies Polling and Interrupts (MAX6818)

• Pin-Compatible with ‘LS573 (MAX6818)

Applications MAX6817EUT+T

● μP Switch Interfacing

● Industrial Instruments

● PC-Based Instruments

● Portable Instruments

● Membrane Keypads