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參數(shù)資料
| 型號： | DS1819CR-10T&R |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| 封裝： | SOT-23, 5 PIN |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 110K |
| 代理商： | DS1819CR-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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1819CR-10-U | 功能描述:電壓監(jiān)測器/監(jiān)控器 RoHS:否 制造商:Texas Instruments 監(jiān)測電壓數(shù):2 監(jiān)測電壓:Adjustable 輸出類型:Open Drain 欠電壓閾值: 過電壓閾值: 準確性:1 % 工作電源電壓:1.5 V to 6.5 V 工作電源電流:1.8 uA 最大工作溫度:+ 125 C 封裝 / 箱體:SON-6 安裝風格:SMD/SMT |
| DS1819CR-10-U+ | 功能描述:電壓監(jiān)測器/監(jiān)控器 RoHS:否 制造商:Texas Instruments 監(jiān)測電壓數(shù):2 監(jiān)測電壓:Adjustable 輸出類型:Open Drain 欠電壓閾值: 過電壓閾值: 準確性:1 % 工作電源電壓:1.5 V to 6.5 V 工作電源電流:1.8 uA 最大工作溫度:+ 125 C 封裝 / 箱體:SON-6 安裝風格:SMD/SMT |
| DS1819CR-20/T&R | 制造商:Maxim Integrated Products 功能描述:UMON RST PBRST SOT23 3.3V 20% T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC MICROMON 3V W/PBRST SOT-23-5 制造商:Maxim Integrated Products 功能描述:Supervisory Circuits 3.3/5V MicroMonitor |
| DS1819CR-20/T&R | 功能描述:監(jiān)控電路 3.3/5V MicroMonitor RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| DS1819CR-20/TR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage Detector |
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