MAX6817EUT/GH9-T Maxim Integrated, MAX6817EUT/GH9-T Datasheet

MAX6817EUT/GH9-T

Manufacturer Part Number

MAX6817EUT/GH9-T

Description

Supervisory Circuits

Manufacturer

Maxim Integrated

Series

MAX6816, MAX6817, MAX6818r

Datasheet

1.MAX6817EUTGH9-T.pdf (8 pages)

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Pin Configurations appear at end of data sheet.

Functional Diagrams continued at end of data sheet.

UCSP is a trademark of Maxim Integrated Products, Inc.

For pricing, delivery, and ordering information, please contact Maxim Direct

at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.

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 (CH),

simplifying microprocessor (µP) polling and interrupts.

Additionally, the MAX6818 has three-state outputs con-

trolled by an enable (EN) pin, and is pin-compatible

with the LS573 octal latch (except for the CH pin),

allowing easy interfacing to a digital data bus.

MECHANICAL

SWITCH

µP Switch Interfacing

Industrial Instruments

PC-Based Instruments

Portable Instruments

Automotive Applications

Membrane Keypads

MAX6816

Typical Operating Circuit

GND

±15kV ESD-Protected, Single/Dual/Octal,

OUT

Functional Diagrams

General Description

0.1µF

DEBOUNCED

OUTPUT

Applications

RESET

MAX6816/MAX6817/MAX6818

µP

CMOS Switch Debouncers

o Robust Inputs can Exceed Power Supplies

o ESD Protection for Input Pins

o Small SOT Packages (4 and 6 pins)

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

o Single (MAX6816), Dual (MAX6817), and Octal

o No External Components Required

o 6µA Supply Current

o Three-State Outputs for Directly Interfacing

o Switch Change-of-State Output Simplifies

o Pin-Compatible with ’LS573 (MAX6818)

Note: There is a minimum order increment of 2500 pieces for

SOT packages.

Devices are available in both leaded and lead-free packaging.

Specify lead-free by replacing “-T” with “+T” when ordering.

MAX6816EUS-T

MAX6817EUT-T

MAX6818EAP

Pin Configurations continued at end of data sheet.

up to ±25V

(MAX6818) Versions Available

Switches to µP Data Bus (MAX6818)

Polling and Interrupts (MAX6818)

±15kV—Human Body Model

±8kV—IEC 1000-4-2, Contact Discharge

±15kV—IEC 1000-4-2, Air-Gap Discharge

PART

TOP VIEW

GND

TEMP RANGE

-40°C to +125°C

Ordering Information

SOT143

MAX6816

Pin Configurations

4 SOT143

6 SOT23-6

20 SSOP

PIN-

PACKAGE

19-4770; Rev 3; 8/10

OUT

Features

TOP MARK

KABA

AAAU

SOT

—

Related parts for MAX6817EUT/GH9-T

MAX6817EUT/GH9-T Summary of contents

Page 1

... GND OUTPUT Pin Configurations appear at end of data sheet. Functional Diagrams continued at end of data sheet. UCSP is a trademark of Maxim Integrated Products, Inc. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com. MAX6816/MAX6817/MAX6818 CMOS Switch Debouncers o Robust Inputs can Exceed Power Supplies up to ± ...

Page 2

... T = +25°C.) (Note MIN TYP MAX 2.7 5 0.8 2.4 2.0 300 32 63 100 -25 +25 1.9 2.6 0 1.0 CC 200 0.8 1.7 2.4 0.8 1.1 2.0 100 100 100 ±10 ±15 ±8 ±15 UNITS V 20 µ kΩ ± ±1 µ µA kV Maxim Integrated ...

Page 3

... SUPPLY VOLTAGE SUPPLY VOLTAGE (V) DEBOUNCE DELAY PERIOD vs. TEMPERATURE -40 -25 - TEMPERATURE (°C) Maxim Integrated MAX6816/MAX6817/MAX6818 CMOS Switch Debouncers Typical Operating Characteristics DEBOUNCE OF CLOSING SWITCH 5V - 10ms/div , I = 0.4mA SOURCE 1.6mA OL SINK ...

Page 4

... While the sup- ply voltage is below the undervoltage threshold (typically 1.9V), the debounce circuitry remains trans- parent. Switch states are present at the logic outputs with no debouce delay. Pin Description FUNCTION LOAD UNDER- VOLTAGE MAX6816 LOCKOUT MAX6817 MAX6818 Undervoltage Lockout OUT Maxim Integrated ...

Page 5

... They are designed to withstand ±15kV per the IEC 1000-4-2 Air Gap Discharge Test and ±8kV per the IEC 1000-4-2 Contact Discharge Test. Since there are 63kΩ (typical) pullup resistors connect each input, driving an input to -25V will draw Maxim Integrated MAX6816/MAX6817/MAX6818 CMOS Switch Debouncers OUT1– ...

Page 6

... The MAX6816/ MAX6817/MAX6818 help you design equipment that R 50MΩ to 100MΩ R 330Ω DISCHARGE CHARGE CURRENT RESISTANCE LIMIT RESISTOR C s STORAGE 150pF CAPACITOR DC I 100% 90% 10% 30ns 60ns Human Body Model DEVICE UNDER TEST t IEC 1000-4-2 Maxim Integrated ...

Page 7

... IN2 3 SOT23-6 ___________________Chip Information SUBSTRATE CONNECTED TO GND PROCESS: BiCMOS Maxim Integrated MAX6816/MAX6817/MAX6818 CMOS Switch Debouncers The Machine Model for ESD tests all pins using a 200pF storage capacitor and zero discharge resis- tance. Its objective is to emulate the stress caused by contact that occurs with handling and assembly during manufacturing ...

Page 8

... Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. 8 © 2010 Maxim Integrated DESCRIPTION Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 The Maxim logo and Maxim Integrated are trademarks of Maxim Integrated Products, Inc. Revision History PAGES CHANGED — 1–4, 7 ...

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