MAX6818:±15kV ESD保护、单/双/八通道、CMOS开关去抖器

业内首款SOT开关去抖器,具有±15kV ESD保护和±25V故障容限

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.

关键特性
  • 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:典型工作电路
MAX6816、MAX6817、MAX6818:典型工作电路
应用
  • µP开关接口
  • 工业仪表
  • 触摸键盘
  • 基于PC的仪表
  • 便携式仪表
数据手册DataSheet
语言下载文件备注
英文MAX6816-MAX6818.pdfRev 5; 05/2015
关键参数
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
技术资料
质量和环境数据
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX6818EAP停止供货MAX6818EAP+SSOP,;20引脚;57.9mm²-40°C至+125°CRoHS/无铅:否
MAX6818EAP+生产中SSOP,;20引脚;57.9mm²-40°C至+125°CRoHS/无铅:无铅
MAX6818EAP+T生产中SSOP,;20引脚;57.9mm²-40°C至+125°CRoHS/无铅:无铅
MAX6818EAP-T停止供货MAX6818EAP+TSSOP,;20引脚;57.9mm²-40°C至+125°CRoHS/无铅:否
MAX6818EAP/GG8生产中SSOP;-40°C至+125°C参考数据资料
MAX6816-MAX6818.pdf MAX6818
Low-Cost, 24V Industrial Controller Is ESD-Protected MAX6818
Interfacing Switches and Relays to the Real World in Real Time MAX6818
Switch Bounce and Other Dirty Little Secrets MAX6818
MAX6818.pdf MAX6818