MAX6816, MAX6817, MAX6818 ±15kV ESD-Protected, Single/Dual/Octal, CMOS Switch Debouncers

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.

Key Features

Applications/Uses

Robust 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
Small SOT Packages (4 and 6 pins)
Single-Supply Operation from +2.7V to +5.5V
Single (MAX6816), Dual (MAX6817), and Octal (MAX6818) Versions Available
No External Components Required
6µA Supply Current
Three-State Outputs for Directly Interfacing Switches to µP Data Bus (MAX6818)
Switch Change-of-State Output Simplifies Polling and Interrupts (MAX6818)
Pin-Compatible with 'LS573 (MAX6818)

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

Key Specifications: Switch Debouncer/Protectors

Part Number

Switch Inputs

Edge Triggered

Debounce Duration
(ms)

Output Polarity

Output Type

Switch Inputs
(±V)

ESD Protect.
(±kV)

I_CC
(µA)

Package/Pins

Price

max

See Notes

MAX6816

Both Edges

15 to 85

Active High

Push-Pull

±25

MAX6817

MAX6818

See All Switch Debouncer/Protectors (6)

Diagram

Typical Operating Circuit

Application Notes

Application Note 287: Switch Bounce and Other Dirty Little Secrets - MAX6816, MAX6817, MAX6818
Application Note 764: Interfacing Switches and Relays to the Real World in Real Time - MAX6816, MAX6818
Application Note 805: Low-Cost, 24V Industrial Controller Is ESD-Protected - MAX6818
Application Note 843: Industrial 0V to +10V Digital Potentiometer - MAX6817
Application Note 893: Switch-Debouncer IC Creates A Long-Period Timer - MAX6817
Application Note 1118: Manually Operated Digital Potentiometer Doesn't Need a Microprocessor - MAX6817
Application Note 1802: ESD-Protected EPOT System has Pushbutton Interface - MAX6817
Application Note 2378: Handy Circuit Gives Systems Flexible Fault Protection - MAX6816
Application Note 2765: Flexible Fault Protection - MAX6816
Application Note 3980: Power Supplies for Next-Generation Automotive Lighting - MAX6818
Application Note 4232: HFRD-34.0 4 x 4 DVI KVM Switch - MAX6817
Application Note 4292: Where Is Ground? - MAX6817
Application Note 4444: Single-Pushbutton ON/OFF Power Control - MAX6816
Application Note 4626: Multiple-Pulse Generator Aids IC Testing - MAX6816

Design Guides

Microprocessor Supervisory (PDF)

Reliability Reports

Reliability Report: MAX6817.pdf

Show FIT data for:

Request Reliability Report for:

Software/Models

MAX6816 IBIS Model

MAX6817 Macromodel

MAX6817 Orcad Library

MAX6817DEBOUNCE Test Circuit File

MAX6818 ESD-Protected CMOS Switch Debouncer

Ordering Information

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-12 of 12

MAX6816 Free
Sample Buy Status

Package: TYPE PINS FOOTPRINT

DRAWING CODE/VAR *

Temp RoHS/Lead-Free?
Materials Analysis

MAX6816EUS+

Active SOT;4 pin;8 mm²
Outline Drawing: 21-0052 (PDF)
Land Pattern: 90-0183 (PDF)
Use pkgcode/variation: U4+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis

MAX6816EUS

Active SOT;4 pin;8 mm²
Outline Drawing: 21-0052 (PDF)
Land Pattern: 90-0183 (PDF)
Use pkgcode/variation: U4-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis

MAX6816EUS-T

Active SOT;4 pin;8 mm²
Outline Drawing: 21-0052 (PDF)
Land Pattern: 90-0183 (PDF)
Use pkgcode/variation: U4-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis

MAX6816EUS+T

Active SOT;4 pin;8 mm²
Outline Drawing: 21-0052 (PDF)
Land Pattern: 90-0183 (PDF)
Use pkgcode/variation: U4+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis

MAX6817 Free
Sample Buy Status

Package: TYPE PINS FOOTPRINT

DRAWING CODE/VAR *

Temp RoHS/Lead-Free?
Materials Analysis

MAX6817EUT+

Active SOT;6 pin;9 mm²
Outline Drawing: 21-0058 (PDF)
Land Pattern: 90-0175 (PDF)
Use pkgcode/variation: U6+4*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis

MAX6817EUT

Active SOT;6 pin;9 mm²
Outline Drawing: 21-0058 (PDF)
Land Pattern: 90-0175 (PDF)
Use pkgcode/variation: U6-4*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis

MAX6817EUT-T

Active SOT;6 pin;9 mm²
Outline Drawing: 21-0058 (PDF)
Land Pattern: 90-0175 (PDF)
Use pkgcode/variation: U6-4*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis

MAX6817EUT+T

Active SOT;6 pin;9 mm²
Outline Drawing: 21-0058 (PDF)
Land Pattern: 90-0175 (PDF)
Use pkgcode/variation: U6+4*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis

MAX6818 Free
Sample Buy Status

Package: TYPE PINS FOOTPRINT

DRAWING CODE/VAR *

Temp RoHS/Lead-Free?
Materials Analysis

MAX6818EAP

Active SSOP;20 pin;58 mm²
Outline Drawing: 21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis

MAX6818EAP-T

Active SSOP;20 pin;58 mm²
Outline Drawing: 21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis

MAX6818EAP+

Active SSOP;20 pin;58 mm²
Outline Drawing: 21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis

MAX6818EAP+T

Active SSOP;20 pin;58 mm²
Outline Drawing: 21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis

Notes and Comments

Single Switch Debouncer (MAX6816)
Dual Switch Debouncer (MAX6817)
Octal Switch Debouncer (MAX6818)

Related Products

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See All Switch Debouncer/Protectors (6 Products)

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Document Ref.: 19-4770; Rev 2; 2006-08-01
This page last modified: 2009-09-07