Datasheet > TC1278

TC1278

更新时间： 2024-11-28 22:49:55

品牌	Logo	应用领域
美国微芯 - MICROCHIP		监视器
页数	文件大小	规格书
12页	426K
描述
3-Pin Reset Monitors for 5V Systems

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中文翻译

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TC1278 数据手册

TC1278/TC1279

3-Pin Reset Monitors for 5V Systems

Features

General Description

• Precision V_CCMonitor for 5.0V System Supplies

• 250msec Minimum RESET Output Duration

The TC1278/TC1279 are cost-effective system super-

visor circuits designed to monitor V in digital systems

and provide a reset signal to the host processor when

necessary. No external components are required.

• Output Valid to V = 1.2V

• V Transient Immunity

The reset output is driven active within 5µsec of V

• Small 3-Pin SOT-23B Package

• No External Components

falling through the reset voltage threshold. RESET is

maintained active for a minimum of 250msec after V

rises above the reset threshold. The TC1278 has an

active-high RESET output while the TC1279 has an

active-low RESET output, and both devices have an

open drain output stage. The output is valid down to

Applications

• Computers

• Embedded Systems

= 1.2V. Both devices are available in a 3-Pin SOT-

• Battery Powered Equipment

• Critical µP Power Supply Monitoring

23B package.

Typical Operating Circuit

Device Selection Table

Part

Number

Temp.

Range

Order

Package

Processor

TC1278-xENB Open Drain 3-Pin SOT-23B -40°C to +85°C

TC1279-xENB Open Drain 3-Pin SOT-23B -40°C to +85°C

RESET

Input

RESET

NOTE: “x” denotes a suffix for V_CCthreshold (see table below).

TC1279

GND

Suffix

Reset V Threshold (V)

4.625

4.375

4.125

Package Type

3-Pin SOT-23B

RESET

TC1278-xENB

TC1279-xENB

GND

NOTE: 3-Pin SOT-23B is equivalent to JEDEC TO-236

2002 Microchip Technology Inc.

DS21384B-page 1

12 3 4 5 6 7...12

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