Datasheet > AS1834AEMA

AS1834AEMA

更新时间： 2024-01-29 03:00:43

品牌	Logo	应用领域
PULSECORE		光电二极管
页数	文件大小	规格书
10页	260K
描述
Power Supply Support Circuit, Fixed, 2 Channel, PDSO8, MICROSO-8

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AS1834AEMA 技术参数

生命周期：	Obsolete	包装说明：	MICROSO-8
Reach Compliance Code：	unknown	风险等级：	5.4
可调阈值：	NO	模拟集成电路 - 其他类型：	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：	S-PDSO-G8	JESD-609代码：	e0
长度：	3 mm	信道数量：	2
功能数量：	1	端子数量：	8
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	TSSOP
封装形状：	SQUARE	封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：	NOT SPECIFIED	认证状态：	Not Qualified
座面最大高度：	1.1 mm	最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	1.2 V	标称供电电压 (Vsup)：	2.7 V
表面贴装：	YES	温度等级：	INDUSTRIAL
端子面层：	TIN LEAD	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	3 mm
Base Number Matches：	1

AS1834AEMA 数据手册

October 2003

ASM1834A/D

rev 1.0

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 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

•

Monitor 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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