MAX818L|MAX818M - +5V微处理器监控电路

MAX818L|MAX818M是Maxim美信半导体公司的一款美信芯片产品，MAX818L|MAX818M是+5V微处理器监控电路，本站介绍了MAX818L|MAX818M的封装应用图解、特点和优点、功能等，并给出了与MAX818L|MAX818M相关的Maxim元器件型号供参考。

MAX818L|MAX818M - +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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