MAX811TEUS

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MAX811TEUS 的货源和报价

MAX811TEUS 的相关技术信息

概述

The MAX811/MAX812 are low-power microprocessor (µP) supervisory circuits used to monitor power supplies in µP and digital systems. They provide excellent circuit reliability and low cost by eliminating external components and adjustments when used with 5V- powered or 3V-powered circuits. The MAX811/MAX812 also provide a debounced manual reset input.

These devices perform a single function: They assert a reset signal whenever the V_CC supply voltage falls below a preset threshold, keeping it asserted for at least 140ms after V_CC has risen above the reset threshold. The only difference between the two devices is that the MAX811 has an active-low RESET output (which is guaranteed to be in the correct state for V_CC down to 1V), while the MAX812 has an active-high RESET output. The reset comparator is designed to ignore fast transients on V_CC. Reset thresholds are available for operation with a variety of supply voltages.

Low supply current makes the MAX811/MAX812 ideal for use in portable equipment. The devices come in a 4-pin SOT143 package.

关键特性 应用

Precision Monitoring of 3V, 3.3V, and 5V Power-Supply Voltages
6µA Supply Current
140ms Min Power-On Reset Pulse Width; RESET-bar Output (MAX811), RESET Output (MAX812)
Guaranteed Over Temperature
Guaranteed RESET-bar Valid to V_CC = 1V (MAX811)
Power-Supply Transient Immunity
No External Components
4-Pin SOT143 Package

计算机－台式机、工作站、服务器

控制器

精确的µP与µP电源监视器

智能仪表

便携式电池供电设备

Key Specifications: Microprocessor Supervisors

Part Number

Number of Monitored Voltages

Reset Threshold Range (V)

Active-Low Reset Output

Active-High Reset Output

Min. Reset Timeout Range

Watchdog Feature

Supervisor Features

Reset Thresh. Acc. (% at +25°C)

Max. I_CC (µA)

Package Type

Operating Temp. Range (°C)

MAX811

2.5 to 3.3 3.3 to 5.5

Push-Pull

85ms to 300ms

No Watchdog

Manual Reset

1.5

15.0

SOT

0 to +70 -40 to +85

MAX812

Push-Pull

应用笔记

App Note 655: Supervisor ICs Monitor Battery-Powered Equipment - MAX811 (English only)

App Note 1050: Reset Circuit Ensures Valid Supply Voltage - MAX812 (English only)

App Note 1858: Tiny IC Debounces Pushbutton Switch - MAX812 (English only)

注释

Active-low reset output (MAX811)

Active-high reset output (MAX812)

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图表

MAX811, MAX811L, MAX811M, MAX811R, MAX811S, MAX811T, MAX812, MAX812L, MAX812M, MAX812R, MAX812S, MAX812T: Typical Operating Circuit