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参数资料
| 型号： | DS1814CR-10T&R |
| 厂商： | DALLAS SEMICONDUCTOR |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| 封装： | SOT-23, 5 PIN |
| 文件页数： | 1/8页 |
| 文件大小： | 110K |
| 代理商： | DS1814CR-10T&R |
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FEATURES
Halts and restarts an out-of-control
microprocessor
Holds microprocessor in check during power
transients
Automatically restarts microprocessor after
power failure
Monitors pushbutton for external override
Accurate 5%, 10%, or 20% (3-volt only)
microprocessor power monitoring
Eliminates the need for discrete components
20% tolerance for use with 3.0-volt systems
Pin- and function-compatible with the
MAX823/24/25 products
Low cost SOT-23-5 package
Industrial temperature: -40
°C to +85°C
DEVICE
RST
PBRST
WD
DS181xA
DS181xB
DS181xC
X
x = "DS1814" for 5 volt devices
x = "DS1819" for 3 volt devices
PIN ASSIGNMENT
PIN DESCRIPTION
DS181xA
1
RST
Active Low Reset Output
2
GND
Ground
3
PBRST
Pushbutton Reset Input
4
ST
Strobe Input
5
VCC
Power Supply
DS181xB
1
RST
Active Low Reset Output
2
GND
Ground
3
RST
Active High Reset Output
4
ST
Strobe Input
5
VCC
Power Supply
DS181xC
1
RST
Active Low Reset Output
2
GND
Ground
3
RST
Active High Reset Output
4
PBRST
Pushbutton Reset Input
5
VCC
Power Supply
DESCRIPTION
The DS1814 5-Volt MicroMonitor and the DS1819 3.3-Volt MicroMonitor monitor three vital conditions
for a microprocessor: power supply, software execution, and external override. First, a precision
temperature-compensated reference and comparator circuit monitor the status of VCC. When an out-of-
tolerance condition occurs, an internal power-fail signal is generated which forces the reset(s) to an active
state. When VCC returns to an in-tolerance condition, the reset signal is kept in the active state for a
minimum of 140 ms to allow the power supply and processor to stabilize.
DS1814/DS1819
5-Volt and 3.3-Volt MicroMonitor
www.dalsemi.com
32
1
45
SOT-23-5 PACKAGE
See Mech. Drawing
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1814CR-10-U | 功能描述:电压监测器/监控器 RoHS:否 制造商:Texas Instruments 监测电压数:2 监测电压:Adjustable 输出类型:Open Drain 欠电压阈值: 过电压阈值: 准确性:1 % 工作电源电压:1.5 V to 6.5 V 工作电源电流:1.8 uA 最大工作温度:+ 125 C 封装 / 箱体:SON-6 安装风格:SMD/SMT |
| DS1814CR-10-U+ | 功能描述:电压监测器/监控器 RoHS:否 制造商:Texas Instruments 监测电压数:2 监测电压:Adjustable 输出类型:Open Drain 欠电压阈值: 过电压阈值: 准确性:1 % 工作电源电压:1.5 V to 6.5 V 工作电源电流:1.8 uA 最大工作温度:+ 125 C 封装 / 箱体:SON-6 安装风格:SMD/SMT |
| DS1814CR-5/T&R | 制造商:Maxim Integrated Products 功能描述:UMON RST PBRST SOT23 5V 5% T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC MICROMON 5V W/PBRST SOT-23-5 制造商:Maxim Integrated Products 功能描述:Supervisory Circuits 3.3/5V MicroMonitor |
| DS1814CR-5/T&R | 功能描述:监控电路 3.3/5V MicroMonitor 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 |
| DS1814CR-5/TR | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage Detector |
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