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参数资料
| 型号： | MAX16998BAUA+ |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | 1 TIMER(S), PROGRAMMABLE TIMER, PDSO8 |
| 封装： | 3 X 3 MM, ROHS COMPLIANT, MO-187-AA, MICRO MAX PACKAGE-8 |
| 文件页数： | 1/16页 |
| 文件大小： | 146K |
| 代理商： | MAX16998BAUA+ |
General Description
The MAX16997/MAX16998 are microprocessor (P)
supervisory circuits for high-input-voltage and low-qui-
escent-current applications. These devices detect
downstream circuit failures and provide switchover to
redundant circuitry. See the
Selector Guide for the dif-
ferent versions of this product family.
The MAX16997/MAX16998 family has four independent
inputs for reset and watchdog functions. SWT and SRT
inputs independently set the timeout periods of watch-
dog and reset timers through external capacitors.
RESETIN/EN monitor voltages at respective inputs. A
resistive voltage-divider sets the reset threshold.
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 for the reset timeout period, tRESET,
and then goes high. 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 tim-
ing when the voltage at EN becomes higher than the
preset threshold voltage level. Each time EN rises
above the preset threshold voltage, the initial watchdog
timeout period is 8 times the normal watchdog timeout
period (tWP).
The MAX16997/MAX16998 are available in 8-pin lead-
free MAX packages and are fully specified over the
-40°C to +125°C automotive temperature range.
Applications
Automotive
Industrial
Features
o Wide 5V to 40V Input Voltage Range
o 18A Quiescent Current (Typical at +125°C)
o Capacitor-Adjustable Timeout Period for
Watchdog and Reset
o Windowed Watchdog Timer Options
(MAX16998B/D)
o External Voltage Monitoring (RESETIN for the
MAX16998A/B/D and EN for the MAX16997A)
o Car Battery-Compatible EN Input
o TTL- and CMOS-Compatible Open-Drain Outputs
o 18V Maximum Open-Drain Reset Output Voltage
o 28V Maximum Open-Drain Enable Output Voltage
o Power-On/Power-Off Reset Functionality
(MAX16998A/B/D Only)
o AEC-Q100 Qualified
o -40°C to +125°C Operating Temperature Range
o Small (3mm x 3mm) MAX Package
o WDI Narrow Pulse Immunity
MAX16997/MAX16998
High-Voltage Watchdog Timers with
Adjustable Timeout Delay
________________________________________________________________
Maxim Integrated Products
1
PART
TEMP RANGE
PIN-PACKAGE
MAX16997AAUA+
-40°C to +125°C
8 MAX
MAX16997AAUA/V+
-40°C to +125°C
8 MAX
MAX16998AAUA+
-40°C to +125°C
8 MAX
MAX16998AAUA/V+
-40°C to +125°C
8 MAX
MAX16998BAUA+
-40°C to +125°C
8 MAX
MAX16998BAUA/V+
-40°C to +125°C
8 MAX
MAX16998DAUA+
-40°C to +125°C
8 MAX
MAX16998DAUA/V+
-40°C to +125°C
8 MAX
PART
WATCHDOG
WINDOW SIZE (%)
ENABLE
RESET
EN
RESETIN
MAX16997A
100
—
—
MAX16998A
100
—
MAX16998B
50
—
MAX16998D
75
—
Selector Guide
Ordering Information
19-4000; Rev 2; 8/09
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
+Denotes a lead(Pb)-free/RoHS-compliant package.
/V Denotes Automotive qualified part.
Pin Configurations appear at end of data sheet.
MAX is a registered trademark of Maxim Integrated Products, Inc.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX16998BAUA/V+ | 功能描述:监控电路 Watchdog Timer w/Adj Timeout Delay RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX16998BAUA/V+T | 功能描述:监控电路 Watchdog Timer w/Adj Timeout Delay RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX16998BAUA+ | 功能描述:监控电路 Watchdog Timer w/Adj Timeout Delay RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX16998BAUA+T | 功能描述:监控电路 Watchdog Timer w/Adj Timeout Delay RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX16998DAUA/V+ | 功能描述:监控电路 Watchdog Timer w/Adj Timeout Delay RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
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