MAX823TEUK-T

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MAX823TEUK-T 的货源和报价

MAX823TEUK-T 的相关技术信息

概述

The MAX823/MAX824/MAX825* microprocessor (µP) supervisory circuits combine reset output, watchdog, and manual reset input functions in 5-pin SOT23 and SC70 packages. They significantly improve system reliability and accuracy compared to separate ICs or discrete components. The MAX823/MAX824/MAX825 are specifically designed to ignore fast transients on V_CC.

Seven preprogrammed reset threshold voltages are available (see Reset Threshold Table). All three devices have an active-low reset output, which is guaranteed to be in the correct state for V_CC down to 1V. The MAX823 also offers a watchdog input and manual reset input. The MAX824 offers a watchdog input and a complementary active-high reset. The MAX825 offers a manual reset input and a complementary active-high reset. The Selector Guide explains the functions offered in this series of parts.

关键特性 应用

Precision Monitoring of +2.5V, +3V, +3.3V, and +5V Power Supplies
Operating Current: 6µA (MAX823L/M) (SC70)
2µA (MAX825T/S/R/Z/Y) (SC70)

Fully Specified Over Temperature
140ms min Power-On Reset
Guaranteed RESET-bar Valid to V_CC = 1V
Power-Supply Transient Immunity
Watchdog Timer with 1.6s Timeout (MAX823/MAX824)
Manual Reset Input (MAX823/MAX825)
No External Components

汽车电子

计算机与控制器

精确的µP监视器

嵌入式控制器

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

Nom. Watchdog Timeout Range

Supervisor Features

Max. I_CC (µA)

Industry Qualified

Package Type

Operating Temp. Range (°C)

MAX823

1.8 to 2.5 2.5 to 3.3 3.3 to 5.5

Push-Pull

85ms to 300ms

Input (WDI)

1s to 2s

Manual Reset

24.0

Automotive - General

SC70 SOT

0 to +70 -40 to +125 -40 to +85

MAX824

Push-Pull

Input (WDI)

1s to 2s

24.0

MAX825

Push-Pull

No Watchdog

Manual Reset

12.0

应用笔记

App Note 279: Supervisory Circuits Keep Your Microprocessor Under Control - MAX823 (English only)

App Note 1050: Reset Circuit Ensures Valid Supply Voltage - MAX824 (English only)

App Note 1926: Watchdogs Improve System Reliability—How to Choose the Right Part - MAX823, MAX824, MAX825 (English only)

注释

*Patents Pending

Active-low reset with manual reset and watchdog timer (MAX823)

Active-low reset and active-high reset with watchdog timer (MAX824)

Active-low reset and active-high reset with manual reset (MAX825)