Datasheet > MAX16998

MAX16998

更新时间： 2024-11-05 14:58:07

品牌	Logo	应用领域
亚德诺 - ADI		高压
页数	文件大小	规格书
16页	1038K
描述
高压看门狗定时器，可调节超时周期

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数据手册

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MAX16998 数据手册

MAX16997/MAX16998

High-Voltage Watchdog Timers with

Adjustable Timeout Delay

General Description

Features

● Wide 5V to 40V Input Voltage Range

The MAX16997/MAX16998 are microprocessor (μP)

supervisory circuits for high-input-voltage and low-

quiescent-current applications. These devices detect

downstream circuit failures and provide switchover to

redundant circuitry. See the Selector Guide for the

different versions of this product family.

● 18μA Quiescent Current (Typical at +125°C)

● Capacitor-Adjustable Timeout Period for Watchdog

and Reset

● Windowed Watchdog Timer Options (MAX16998B/D)

● External Voltage Monitoring (RESETIN for the

The MAX16997/MAX16998 family has four independent

inputs for reset and watchdog functions. SWT and SRT

inputs independently set the timeout periods of watchdog

and reset timers through external capacitors. RESETIN/

EN monitor voltages at respective inputs. A resistive

voltage-divider sets the reset threshold.

MAX16998A/B/D and EN for the MAX16997A)

● Car Battery-Compatible EN Input

● TTL- and CMOS-Compatible Open-Drain Outputs

● 18V Maximum Open-Drain Reset Output Voltage

● 28V Maximum Open-Drain Enable Output Voltage

The MAX16998A/B/D generate two output signals, RESET

and ENABLE. RESET asserts whenever RESETIN drops

below its threshold voltage or when the watchdog timer

detects a timing fault at WDI. Once asserted, and after

all reset conditions are removed, RESET remains low

● Power-On/Power-Off Reset Functionality

(MAX16998A/B/D Only)

● AEC-Q100 Qualified

● -40°C to +125°C Operating Temperature Range

● Small (3mm x 3mm) μMAX Package

● WDI Narrow Pulse Immunity

for the reset timeout period, t

, and then goes high.

RESET

The MAX16997A generates one output signal (ENABLE)

based on the voltage level at EN and the signal at WDI.

The MAX16997A does not have a RESET output. The

watchdog is disabled if the voltage at EN is below its

threshold. The MAX16997A watchdog timer starts timing

when the voltage at EN becomes higher than the preset

threshold voltage level. Each time EN rises above the pre-

set threshold voltage, the initial watchdog timeout period

Ordering Information

PART

TEMP RANGE

-40°C to +125°C

PIN-PACKAGE

8 µMAX

MAX16997AAUA+

MAX16998AAUA+

MAX16998AAUA/V+

MAX16998BAUA+

MAX16998BAUA/V+

MAX16998DAUA+

MAX16998DAUA/V+

8 µMAX

is 8 times the normal watchdog timeout period (t ).

8 µMAX

The MAX16997/MAX16998 are available in 8-pin

8 µMAX

lead(Pb)-free μMAX packages and are fully specified

8 µMAX

over the -40°C to +125°C automotive temperature range.

8 µMAX

Applications

● Automotive

+Denotes a lead(Pb)-free/RoHS-compliant package.

/V denotes an automotive qualified part.

● Industrial

Pin Configurations appear at end of data sheet.

Selector Guide

WATCHDOG

WINDOW SIZE (%)

PART

ENABLE

RESET

RESETIN

MAX16997A

MAX16998A

MAX16998B

MAX16998D

100

—

μMAX is a registered trademark of Maxim Integrated Products, Inc.

19-4000; Rev 5; 4/19

12 3 4 5 6 7...16

中文翻译

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与MAX16998相关器件

型号	品牌	获取价格	描述	数据表
MAX16998AAUA/V+	MAXIM	获取价格	Programmable Timer, 1 Timer(s), BICMOS, PDSO8, 3 X 3 MM, ROHS COMPLIANT, MO-187-AA, MICRO
MAX16998AAUA/V+T	MAXIM	获取价格	Timer or RTC, CMOS,
MAX16998AAUA+	MAXIM	获取价格	High-Voltage Watchdog Timers with Adjustable Timeout Delay
MAX16998AAUA+T	MAXIM	获取价格	暂无描述
MAX16998BAUA+	MAXIM	获取价格	High-Voltage Watchdog Timers with Adjustable Timeout Delay
MAX16998DAUA/V+T	MAXIM	获取价格	Timer or RTC, CMOS,
MAX16998DAUA+	MAXIM	获取价格	High-Voltage Watchdog Timers with Adjustable Timeout Delay
MAX16998DAUA+T	MAXIM	获取价格	Timer or RTC, CMOS
MAX16999	MAXIM	获取价格	Ultra-Low Output Voltage, Low-Quiescent-Current Linear Regulator for High-Temperature Appl
MAX16999	ADI	获取价格	超低输出电压、低静态电流线性稳压器，用于高温环境

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