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MAX6816, MAX6817, MAX6818
±15kV ESD-Protected, Single/Dual/Octal, CMOS Switch Debouncers
Industry's-first SOT Switch Debouncer Features ±15kV ESD Protection and ±25V Fault Tolerance
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Status
Active: In Production.
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.
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Data Sheet
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Key Features
- 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)
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Applications/Uses
- µP Switch Interfacing
- Automotive Electronics
- Industrial Instruments
- Membrane Keypads
- PC-Based Instruments
- Portable Instrumentation
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Key Specifications:
| Switch Debouncer/Protectors |
| Part Number |
Switch Inputs |
Edge Triggered |
Debounce Duration
(ms) |
Output Polarity |
Output Type |
Switch Inputs
(±V) |
ESD Protect.
(±kV) |
ICC
(µA) |
Package/Pins |
Budgetary Price |
| max |
max |
See Notes |
| MAX6816 |
1 |
Both Edges |
15 to 85 |
Active High |
Push-Pull |
±25 |
15 |
20 |
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$1.03 @1k |
| MAX6817 |
2 |
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$1.54 @1k |
| MAX6818 |
8 |
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$3.26 @1k |
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See All Switch Debouncer/Protectors (6)
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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 prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
 Typical Operating Circuit
Notes and Comments
Single Switch Debouncer (MAX6816)
Dual Switch Debouncer (MAX6817)
Octal Switch Debouncer (MAX6818)
More Information
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Information Index
Document Ref.: 19-4770
Rev 3;
2010-09-16
This page last modified: 2010-09-16
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