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Maxim产品 - MAX807L|MAX807M|MAX807N介绍

MAX807L|MAX807M|MAX807N - 功能完备的微处理器监控电路，提供±1.5%的复位门限精度

MAX807L|MAX807M|MAX807N是Maxim美信半导体公司的一款美信芯片产品，MAX807L|MAX807M|MAX807N是功能完备的微处理器监控电路，提供±1.5%的复位门限精度，本站介绍了MAX807L|MAX807M|MAX807N的封装应用图解、特点和优点、功能等，并给出了与MAX807L|MAX807M|MAX807N相关的Maxim元器件型号供参考。

MAX807L|MAX807M|MAX807N - 功能完备的微处理器监控电路，提供±1.5%的复位门限精度 - 美信芯片 - Maxim美信半导体高性能芯片品质 - 美信半导体

产品概述

The MAX807 microprocessor (µP) supervisory circuit reduces the complexity and number of components needed to monitor power-supply and battery-control functions in µP systems. A 70µA supply current makes the MAX807 ideal for use in portable equipment, while a 2ns chip-enable propagation delay and 250mA output current capability (20mA in battery-backup mode) make it suitable for larger, higher-performance equipment.

The MAX807 comes in 16-pin DIP, SO, and TSSOP packages, and provides the following functions:

  • µP reset. The active-low RESET output is asserted during power-up, power-down, and brownout conditions, and is guaranteed to be in the correct state for VCC down to 1V.
  • Active-high RESET output.
  • Manual-reset input.
  • Two-stage power-fail warning. A separate low-line comparator compares VCC to a threshold 52mV above the reset threshold. This low-line comparator is more accurate than those in previous µP supervisors.
  • Backup-battery switchover for CMOS RAM, real-time clocks, µPs, or other low-power logic.
  • Write protection of CMOS RAM or EEPROM.
  • 2.275V threshold detector provides for power-fail warning and low-battery detection, or monitors a power supply other than +5V.
  • BATT OK status flag indicates that the backup-battery voltage is above +2.275V.
  • Watchdog-fault output—asserted if the watchdog input has not been toggled within a preset timeout period.

    • 关键特性
  • 以下关键特性由Maxim美信半导体提供：
  • Precision 4.675V (MAX807L), 4.425V (MAX807M), or 4.575V (MAX807N) Voltage Monitoring
  • 200ms Power-OK/Reset Time Delay
  • RESET-bar and RESET Outputs
  • Independent Watchdog Timer
  • 1µA Standby Current
  • Power Switching
  • 250mA in VCC Mode
  • 20mA in Battery-Backup Mode
  • On-Board Gating of Chip-Enable Signals;
  • 2ns CE Gate Propagation Delay
  • MaxCap® and SuperCap Compatible
  • Voltage Monitor for Power Fail
  • Backup-Battery Monitor
  • Guaranteed active-low RESET Valid to VCC = 1V
  • ±1.5% Low-Line Threshold Accuracy 52mV above Reset Threshold
    • 热门应用
  • 计算机：台式机、工作站和服务器
  • 控制器
  • 精确的µP监控
  • 智能仪表
  • 便携式电池供电设备
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