TC1270TERCG

更新时间： 2024-09-16 12:59:47

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	468K
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中文翻译

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数据手册

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TC1270TERCG 数据手册

TC1270/TC1271

4-Pin µP Reset Monitors

Features

Package Type

• Precision V Monitor for 1.8V, 2.7V, 3.0V, 3.3V

and 5.0V Nominal Supplies

4-Pin SOT-143

• Manual Reset Input

• 140msec Minimum RESET, RESET Output

Duration

GND

TC1270

TC1271

• RESET Output Valid to V = 1.0V (TC1270)

• Low 7µA Supply Current

• V Transient Immunity

TC1270 RESET

TC1271 (RESET)

• Small 4-Pin SOT-143 Package

• No External Components

• Replacement for MAX811/812 and Offers a Lower

Threshold Voltage Option

General Description

The TC1270 and TC1271 are cost-effective system

supervisor circuits designed to monitor V in digital

Applications

• Computers

systems and provide a reset signal to the host

processor when necessary. A manual reset input is

provided to override the reset monitor, and is suitable

• Embedded Systems

• Battery Powered Equipment

• Critical µP Power Supply Monitoring

for use as

push-button reset. No external

components are required.

The reset output is driven active within 20µsec (4µsec

Device Selection Table

for F version) of V falling through the reset voltage

Part Number

Package

Temp. Range

threshold. RESET is maintained active for a minimum

of 140msec after V rises above the reset threshold.

The TC1271 has an active-high RESET output while

the TC1270 has an active-low RESET output. The

TC1270xERC

TC1271xERC

4-Pin SOT-143 -40°C to +85°C

output of the TC1270 is valid down to V = 1V. Both

devices are available in a 4-Pin SOT-143 package.

NOTE: “x” denotes a suffix for VCC threshold (see table

below)

The TC1270/TC1271 devices are optimized to reject

Suffix*

Reset V Threshold (V)

fast transient glitches on the V

line. Low supply

current of 7µA (V

= 3.3V) makes these devices

suitable for battery powered applications.

4.63

4.38

3.08

2.93

2.63

1.75

Typical Operating Circuit

Processor

*Custom thresholds available, contact factory.

RESET

Input

RESET

Push-

Button

(Active Low)

TC1270

GND

2002 Microchip Technology Inc.

DS21381B-page 1

12 3 4 5 6 7...12

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