ASM1834DS-T

更新时间： 2024-11-26 22:47:55

品牌	Logo	应用领域
ALSC		电源电路电源管理电路光电二极管监控
页数	文件大小	规格书
10页	257K
描述
Dual 5V and 3.3V uP Power Supply Supervisor with Manual Reset

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数据手册

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ASM1834DS-T 数据手册

April 2005

ASM1834/A/D

rev 1.3

Dual 5V and 3.3V µP Power Supply Supervisor with Manual Reset

All devices operate over the extended industrial temperature

range. Devices are available in 8-pin DIP, surface mount 8-pin

SO and 8-Pin MicroSO packages. Die are also available.

General Description

The ASM1834 supervisors simultaneously monitor both 3.3V

and 5V power sources and generate reset signals when either

supply is out of tolerance. When an out-of-tolerance condition is

detected, the output-reset signal of the affected supply

becomes active and resets the system microprocessor/

microcontroller. On power-up and after the supply voltage

returns to an in-tolerance condition, the reset signal remains

active for approximately 350ms. This allows the power supply

and system microprocessor to stabilize.

Key Features

•

Monitors 5V and 3.3V supplies simultaneously

5V and 3.3V power-on reset

350ms reset time

Debounced pushbutton reset input

Push-pull CMOS output

• ASM1834, ASM1834D

• Eliminates external pull-up resistors

• Active LOW (ASM1834), HIGH (ASM1834D)

Open Drain Output

Tolerance levels are independently selectable for both supplies.

Tolerance options are 5% and 10% percent for the 5V supply

and 10% and 20% percent for the 3.3V supply.

•

• ASM1834A

• Active LOW

The ASM1834 and ASM1834D have push-pull reset output

stages. The ASM1834A reset outputs are open drain devices

that can both be connected to either 5V or 3.3V supply. The

ASM1834 and ASM1834A have active LOW reset outputs. The

ASM1834D has active HIGH reset outputs.

•

Selectable 5V and 3.3V trip point tolerance

Internal power drawn from highest input voltage, 5V or

3.3V

•

Precision temperature-compensated voltage reference and

comparator

Low cost surface mount SO, compact MicroSO and DIP

packages.

All devices can generate reset signals through an internally

debounced pushbutton reset input that affects both reset

outputs.

Wide operating temperature, -40°C to +85°C

Applications

Typical Operating Circuit

•

Microprocessors

PDAs, Hand-held PCs

Embedded Controllers

Telecommunication Systems

Power Supplies

3.3V

+5V

3.3V

ASM1834

µP

Wireless / Cellular Systems

Networking Hardware

3.3V

RESET

PBRST

GND

5VTOL

3.3VTOL

Alliance Semiconductor

2575 Augustine Drive . Santa Clara, CA 95054 . Tel: 408.855.4900 . Fax: 408.855.4999 . www.alsc.com

Notice: The information in this document is subject to change without notice

12 3 4 5 6 7...10

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与ASM1834DS-T相关器件

型号	品牌	获取价格	描述	数据表
ASM1834D-T	ALSC	获取价格	Dual 5V and 3.3V uP Power Supply Supervisor with Manual Reset
ASM1834DU	ALSC	获取价格	Dual 5V and 3.3V uP Power Supply Supervisor with Manual Reset
ASM1834DU	PULSECORE	获取价格	Dual 5V and 3.3V μP Power Supply Supervisor w
ASM1834DUF	PULSECORE	获取价格	Dual 5V and 3.3V μP Power Supply Supervisor w
ASM1834DUF	ALSC	获取价格	Dual 5V and 3.3V uP Power Supply Supervisor with Manual Reset
ASM1834DUF-T	ALSC	获取价格	Dual 5V and 3.3V uP Power Supply Supervisor with Manual Reset
ASM1834DUF-T	PULSECORE	获取价格	Power Supply Support Circuit, Fixed, 2 Channel, PDSO8, LEAD FREE, MICRO, SOP-8
ASM1834DU-T	ALSC	获取价格	Dual 5V and 3.3V uP Power Supply Supervisor with Manual Reset
ASM1834DU-T	ONSEMI	获取价格	2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, MICRO, SOP-8
ASM1834DU-T	PULSECORE	获取价格	Power Supply Support Circuit, Fixed, 2 Channel, PDSO8, MICRO, SOP-8

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