MAX6816:±15kV ESD-Protected, Single/Dual/Octal, CMOS Switch Debouncers

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

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.

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)
MAX6816, MAX6817, MAX6818: Typical Operating Circuit
MAX6816, MAX6817, MAX6818: Typical Operating Circuit
Applications/Uses
  • µP Switch Interfacing
  • Industrial Instruments
  • Membrane Keypads
  • PC-Based Instruments
  • Portable Instrumentation
DataSheet
titleDownload file
MAX6816-MAX6818 Data SheetMAX6816-MAX6818.pdf
Parametrics
Part NumberSwitch InputsEdge TriggeredDebounce Duration
(ms)
Output PolarityOutput TypeSwitch Inputs
(±V)
ESD Protect.
(±kV)
ICC
(µA)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
maxmaxSee Notes
MAX68161Both Edges15 to 85Active HighPush-Pull±251520-40 to +85SOT/4$1.62 @1k
MAX68172SOT/6$2.49 @1k
MAX68188SSOP/20$3.34 @1k
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6816EUSNo Longer AvailableMAX6816EUS+SOT,;4 pin;8 mm²-40°C to +125°CNo
MAX6816EUS+ActiveSOT,;4 pin;8 mm²-40°C to +125°CLead Free
MAX6816EUS+TActiveSOT,;4 pin;8 mm²-40°C to +125°CLead Free
MAX6816EUS-TNo Longer AvailableMAX6816EUS+TSOT,;4 pin;8 mm²-40°C to +125°CNo
MAX6816-MAX6818.pdf MAX6818
Multiple-Pulse Generator Aids IC Testing MAX6816
Single-Pushbutton ON/OFF Power Control MAX6816
Flexible Fault Protection MAX6816
Interfacing Switches and Relays to the Real World in Real Time MAX6818
Switch Bounce and Other Dirty Little Secrets MAX6818
MAX6816.pdf MAX6816