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DS1819C PDF预览

DS1819C

更新时间: 2024-11-05 22:50:47
品牌 Logo 应用领域
达拉斯 - DALLAS /
页数 文件大小 规格书
8页 147K
描述
5V and 3.3V MicroMonitor

DS1819C 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
Reach Compliance Code:unknown风险等级:5.72
可调阈值:NOJESD-30 代码:R-PDSO-G5
JESD-609代码:e0端子数量:5
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:TSOP
封装等效代码:TSOP5/6,.11,37封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, THIN PROFILE电源:3 V
认证状态:Not Qualified子类别:Power Management Circuits
最大供电电流 (Isup):0.012 mA标称供电电压 (Vsup):3 V
表面贴装:YES技术:CMOS
温度等级:INDUSTRIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:GULL WING端子节距:0.95 mm
端子位置:DUAL阈值电压标称:+3V
Base Number Matches:1

DS1819C 数据手册

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DS1814/DS1819  
5V and 3.3V MicroMonitor  
www.maxim-ic.com  
FEATURES  
PIN ASSIGNMENT  
C Halts and restarts an out-of-control  
microprocessor  
3
2
1
C Holds microprocessor in check during power  
transients  
C Automatically restarts microprocessor after  
power failure  
4
5
C Monitors pushbutton for external override  
C Accurate 5%, 10%, or 20% (3V only)  
microprocessor power monitoring  
C Eliminates the need for discrete components  
C 20% tolerance for use with 3.0V systems  
C Pin- and function-compatible with the  
MAX823/24/25 products  
SOT-23-5 PACKAGE  
See Mech. Drawing  
PIN DESCRIPTION  
DS181xA  
1
RST  
GND  
Active Low Reset Output  
Ground  
C Low cost SOT-23-5 package  
C Industrial temperature range: -40LC to +85LC  
2
3
PBRST  
Pushbutton Reset Input  
4
ST  
VCC  
Strobe Input  
DEVICE  
RST  
WD  
RST  
X
X
PBRST  
5
Power Supply  
DS181xA  
DS181xB  
DS181xC  
X
X
X
DS181xB  
X
X
1
2
3
RST  
Active Low Reset Output  
Ground  
X
X
GND  
x = "DS1814" for 5V devices  
RST  
Active High Reset Output  
x = "DS1819" for 3V devices  
4
ST  
VCC  
Strobe Input  
5
Power Supply  
DS181xC  
1
2
3
RST  
Active Low Reset Output  
Ground  
GND  
RST  
Active High Reset Output  
4
PBRST  
VCC  
Pushbutton Reset Input  
5
Power Supply  
DESCRIPTION  
The DS1814 5-Volt MicroMonitor and the DS1819 3.3V 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  
140ms to allow the power supply and processor to stabilize.  
1 of 8  
122001  

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