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3引脚、低功耗微处理器复位电路

3引脚/4引脚、低功耗µP复位电路,带有手动复位

产品详情

主要特征

Parametric specs for Supervisors (1 Monitored Voltage)
Reset Thresh. (V) 2.5 to 3.3
3.3 to 5.5
Reset Out Active High
Push-Pull
tRESET (min) 1ms to 15ms
15ms to 85ms
85ms to 300ms
Watchdog Feature No Watchdog
ICC (µA) (max) 12
Package/Pins SOT23/3
Budgetary
Price (See Notes)
1.69
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参量

Parametric specs for Supervisors (1 Monitored Voltage)
Reset Thresh. (V) 2.5 to 3.3
3.3 to 5.5
Reset Out Active High
Push-Pull
tRESET (min) 1ms to 15ms
15ms to 85ms
85ms to 300ms
Watchdog Feature No Watchdog
ICC (µA) (max) 12
Package/Pins SOT23/3
Budgetary
Price (See Notes)
1.69

主要特征

  • Ultra-Low 0.7V Operating Supply Voltage
  • Low 4.0µA Supply Current
  • Precision Monitoring of 2.85V to 5.0V Power-Supply Voltages
  • Reset Thresholds Available from 2.63V to 4.80V, in Approximately 100mV Increments
  • Fully Specified over Temperature
  • Three Power-On Reset Timeout Periods Available (1ms min, 20ms min, 100ms min)
  • Low Cost
  • Three Available Output Structures: Push/Pull RESET, Push/Pull active-low RESET, Open-Drain active-low RESET
  • Guaranteed RESET/active-low RESET Valid to VCC = 0.7V (MAX6800/MAX6801)
  • Power-Supply Transient Immunity
  • No External Components Required
  • 3-Pin SOT23 Package
  • Pin Compatible with MAX809/MAX810, MAX6326/MAX6327/MAX6328, and MAX6346/MAX6347/MAX6348

应用/用途

  • 计算机
  • 控制器
  • 精确的μP/μC电源监控
  • 智能仪表
  • 便携式/电池供电设备

描述

The MAX6800/MAX6801/MAX6802 microprocessor (µP) supervisory circuits monitor the power supplies in 2.85V to 5.0V µP and digital systems. They increase circuit reliability and reduce cost by eliminating external components and adjustments.

These devices perform a single function—they assert a reset signal whenever the VCC supply voltage declines below a preset threshold, keeping it asserted for a preset timeout period after VCC has risen above the reset threshold. The only difference among the three devices is their output. The MAX6801 (push/pull) and MAX6802 (open-drain) have an active-low RESET output, while the MAX6800 (push/pull) has an active-high RESET output. The MAX6800/MAX6801 are guaranteed to be in the correct state for VCC down to 0.7V. The MAX6802 is guaranteed to be in the correct state for VCC down to 1.0V.

The reset comparator in these ICs is designed to ignore fast transients on VCC. Reset thresholds are factory-trimmable between 2.63V and 4.80V, in approximately 100mV increments. These devices are available with a 1ms (min), 20ms (min), or 100ms (min) reset pulse width. Ideal for space-critical applications, the MAX6800/MAX6801/MAX6802 come packaged in a 3-pin SOT23. For a lower threshold voltage version, see the MAX6332/MAX6333/MAX6334.

简化框图

MAX6800、MAX6801、MAX6802:典型工作电路 MAX6800、MAX6801、MAX6802:典型工作电路 Zoom icon

Technical Docs

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心