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MAX690SCPA+ PDF预览

MAX690SCPA+

更新时间: 2024-09-15 19:24:55
品牌 Logo 应用领域
美信 - MAXIM 光电二极管
页数 文件大小 规格书
18页 868K
描述
Power Supply Management Circuit, Fixed, 1 Channel, CMOS, PDIP8, 0.300 INCH, LEAD FREE, PLASTIC, DIP-8

MAX690SCPA+ 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:DIP
包装说明:DIP, DIP8,.3针数:8
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.64
可调阈值:NO模拟集成电路 - 其他类型:POWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 代码:R-PDIP-T8JESD-609代码:e3
长度:9.375 mm湿度敏感等级:1
信道数量:1功能数量:1
端子数量:8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:DIP封装等效代码:DIP8,.3
封装形状:RECTANGULAR封装形式:IN-LINE
峰值回流温度(摄氏度):260电源:3/5 V
认证状态:Not Qualified座面最大高度:4.572 mm
子类别:Power Management Circuits最大供电电流 (Isup):0.07 mA
表面贴装:NO技术:CMOS
温度等级:INDUSTRIAL端子面层:Matte Tin (Sn)
端子形式:THROUGH-HOLE端子节距:2.54 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:7.62 mmBase Number Matches:1

MAX690SCPA+ 数据手册

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MAX690–MAX695  
Microprocessor Supervisory Circuits  
General Description  
Benefits and Features  
Supervisory Function Integration Saves Board Space  
while Fully Protecting Microprocessor-Based Systems  
• Precision Voltage Monitor  
The MAX690 family of supervisory circuits reduces the  
complexity and number of components required for  
power supply monitoring and battery control functions in  
microprocessor systems. These include µP reset and  
backup-battery switchover, watchdog timer, CMOS RAM  
write protection, and power-failure warning. The MAX690  
family significantly improves system reliability and accu-  
racy compared to that obtainable with separate ICs or  
discrete components.  
- 4.65V (MAX690, MAX691, MAX694, MAX695)  
- 4.40V (MAX692, MAX693)  
• Power OK/Reset Time Delay  
- 50ms, 200ms, or Adjustable  
• Watchdog Timer  
- 100ms, 1.6s, or Adjustable  
• Battery Backup Power Switching  
• Voltage Monitor for Power Fail or Low Battery  
Warning  
The MAX690, MAX692, and MAX694 are supplied in  
8-pin packages and provide four functions:  
A reset output during power-up, power-down, and  
• Minimum External Component Count  
brownout conditions.  
Low Power Consumption in Battery Backup Mode  
Extends Battery Life  
Battery backup switching for CMOS RAM, CMOS  
microprocessor or other low power logic.  
• 1µA Standby Current  
A Reset pulse if the optional watchdog timer has not  
Onboard Gating of Chip Enable Signals Protects  
been toggled within a specified time.  
Against Erroneous Data Written to RAM During Low  
A 1.3V threshold detector for power fail warning, low  
battery detection, or to monitor a power supply other  
than +5V.  
V
Events  
CC  
Applications  
Computers  
Controllers  
Intelligent Instruments  
Automotive Systems  
Critical µP Power Monitoring  
TheMAX691,MAX693,andMAX695aresuppliedin16-pin  
packages and perform all MAX690, MAX692, MAX694  
functions, plus:  
Write protection of CMOS RAM or EEPROM.  
Adjustable reset and watchdog timeout periods.  
Separate outputs for indicating a watchdog timeout,  
Ordering information appears at end of data sheet.  
backup-battery switchover, and low V  
.
Pin Configurations  
CC  
TOP VIEW  
V
1
2
3
4
8
7
6
5
V
BATT  
OUT  
Typical Operating Circuit  
MAX690  
MAX692  
MAX694  
V
RESET  
WDI  
CC  
GND  
PFI  
PFO  
+5V  
V
V
V
POWER TO  
CMOS RAM  
µP  
POWER  
CC  
OUT  
BATT  
V
1
2
3
4
5
6
7
8
16 RESET  
15 RESET  
14 WDO  
13 CE IN  
12 CE OUT  
11 WDI  
BATT  
µP  
SYSTEM  
V
OUT  
MAX690  
V
CC  
MAX691  
MAX693  
MAX695  
RESET  
PFO  
µP RESET  
PFI  
GND  
BATT ON  
LOW LINE  
OSC IN  
µP NMI  
WDI  
I/O  
LINE  
GND  
10 PFO  
OSC SEL  
9 PFI  
MAX690 TYPICAL APPLICATION  
19-0218; Rev 5; 4/15  

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