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Maxim产品 - MAX819L|MAX819M介绍
MAX819L|MAX819M - +5V微处理器监控电路

MAX819L|MAX819M是Maxim美信半导体公司的一款美信芯片产品,MAX819L|MAX819M是+5V微处理器监控电路,本站介绍了MAX819L|MAX819M的封装应用图解、特点和优点、功能等,并给出了与MAX819L|MAX819M相关的Maxim元器件型号供参考。

MAX819L|MAX819M - +5V微处理器监控电路 - 美信芯片 - 低功耗、小尺寸、微处理器监控电路,带有备份电池切换 - 美信半导体

产品概述

The MAX817/MAX818/MAX819 microprocessor (µP) supervisory circuits simplify power-supply monitoring, battery control, and chip-enable gating in µP systems by reducing the number of components required. These devices are designed for use in +5V-powered systems. Low supply current (11µA typical) and small package size make these devices ideal for portable applications. The MAX817/MAX818/MAX819 are specifically designed to ignore fast transients on VCC. Other supervisory functions include active-low reset, backup-battery switchover, watchdog input, battery freshness seal, and chip-enable gating. The Selector Guide in the full data sheet lists the specific functions available from each device.

These devices offer two pretrimmed reset threshold voltages for ±5% or ±10% power supplies: 4.65V for the L versions and 4.40V for the M versions. The MAX817/ MAX818/MAX819 are available in space-saving µMAX® packages, as well as 8-pin DIP/SO.

关键特性
  • 以下关键特性由Maxim美信半导体提供:
  • Precision Supply-Voltage Monitor:
  • 4.65V (MAX81_L)
  • 4.40V (MAX81_M)
  • 11µA Quiescent Supply Current
  • 200ms Reset Time Delay
  • Watchdog Timer with 1.6sec Timeout (MAX817/MAX818)
  • Battery-Backup Power Switching; Battery Voltage Can Exceed VCC
  • Battery Freshness Seal
  • On-Board, 3ns Gating of Chip-Enable Signals (MAX818)
  • Uncommitted Voltage Monitor for Power-Fail or Low-Battery Warning (MAX817/MAX819)
  • Manual Reset Input (MAX819)
  • 热门应用
  • 电池供电计算机/控制器
  • 精确的µP监控
  • 嵌入式控制器
  • 智能仪表
  • 便携式设备
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