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MAX6816_15 Datasheet, PDF (1/8 Pages) Maxim Integrated Products – ±15kV ESD-Protected, Single/Dual/Octal, CMOS Switch Debouncers | |||
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MAX6816/MAX6817/
MAX6818
±15kV ESD-Protected, Single/Dual/Octal,
CMOS Switch Debouncers
General 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 (CH),
simplifying microprocessor (µP) polling and interrupts.
Additionally, the MAX6818 has three-state outputs
controlled 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.
Applications
ââ µP Switch Interfacing
ââ Industrial Instruments
ââ PC-Based Instruments
ââ Portable Instruments
ââ Membrane Keypads
Typical Operating Circuit
VCC
MECHANICAL
SWITCH
MAX6816
IN
OUT
GND
µP
0.1µF
RESET
DEBOUNCED
OUTPUT
Features
ââ Robust Inputs can Exceed Power Supplies
up to ±25V
ââ ESD Protection for Input Pins
±15kVâHuman Body Model
±8kVâIEC 1000-4-2, Contact Discharge
±15kVâIEC 1000-4-2, Air-Gap Discharge
ââ Small SOT Packages (4 and 6 pins)
ââ Single-Supply Operation from +2.7V to +5.5V
ââ Single (MAX6816), Dual (MAX6817), and Octal
(MAX6818) Versions Available
ââ No External Components Required
ââ 6µA Supply Current
ââ Three-State Outputs for Directly Interfacing Switches
to µP Data Bus (MAX6818)
ââ Switch Change-of-State Output Simplifies
Polling and Interrupts (MAX6818)
ââ Pin-Compatible with âLS573 (MAX6818)
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
SOT
TOP MARK
MAX6816EUS-T -40°C to +125°C 4 SOT143
KABA
MAX6817EUT-T -40°C to +125°C 6 SOT23-6
AAAU
MAX6818EAP -40°C to +125°C 20 SSOP
â
Note: There is a minimum order increment of 2500 pieces for
SOT packages.
Devices are available in both leaded and lead(Pb)-free/RoHS-
compliant packaging. Specify lead-free by replacing â-Tâ with
â+Tâ when ordering.
Pin Configurations
TOP VIEW
GND 1
MAX6816
4 VCC
IN 2
3 OUT
SOT143
Pin Configurations continued at end of data sheet.
19-4770; Rev 4; 7/14
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