MAX6818

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

Industry's-first SOT Switch Debouncer Features ±15kV ESD Protection and ±25V Fault Tolerance


Please check latest availability status for a specific part variant.

Description

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.

The single MAX6816 and dual MAX6817 are offered in SOT packages and require no external components. Their low supply current makes them ideal for use in portable equipment.

The MAX6818 octal switch debouncer is designed for data-bus interfacing. The MAX6818 monitors switches and provides a switch change-of-state output (active-low CH), simplifying microprocessor (µP) polling and interrupts. Additionally, the MAX6818 has three-state outputs controlled by an enable (active-low EN) pin, and is pin-compatible with the LS573 octal latch (except for the active-low CH pin), allowing easy interfacing to a digital data bus.
MAX6816, MAX6817, MAX6818: Typical Operating Circuit MAX6816, MAX6817, MAX6818: Typical Operating Circuit Enlarge+

Key Features

  • 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/Uses

  • µP Switch Interfacing
  • Industrial Instruments
  • Membrane Keypads
  • PC-Based Instruments
  • Portable Instrumentation
Part NumberSwitch InputsEdge TriggeredDebounce Duration
(ms)
Output PolarityOutput TypeSwitch Inputs
(±V)
ESD Protect.
(±kV)
ICC
(µA)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
maxmaxSee Notes
MAX6816 1Both Edges15 to 85Active HighPush-Pull±251520-40 to +85
SOT23/4
$1.62 @1k
MAX6817 2
SOT23/6
$2.49 @1k
MAX6818 8
SSOP/20
$3.34 @1k
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

CAD Symbols and Footprints

  • MAX6818EAP+
  • MAX6818EAP+T
  • MAX6818EAP/GG8
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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