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| 型号： | MAX703ESA-T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/9页 |
| 文件大小： | 0K |
| 描述： | IC MPU SUPERVISORY CIRCUIT 8SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 备用电池电路 |
| 监视电压数目： | 1 |
| 输出： | 推挽式，图腾柱 |
| 复位： | 低有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 4.65V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
19-0130; Rev 2; 11/05
Low-Cost Microprocessor Supervisory
Circuits with Battery Backup
General Description
The MAX703/MAX704 microprocessor (μP) supervisory
circuits reduce the complexity and number of compo-
nents required for power-supply monitoring and battery
control functions in μP systems. These devices signifi-
cantly improve system reliability and accuracy com-
pared to that obtained with separate ICs or discrete
components.
The MAX703/MAX704 are available in 8-pin DIP and SO
packages and provide four functions:
1) An active-low reset during power-up, power-down,
and brownout conditions.
2) Battery-backup switching for CMOS RAM, CMOS
μPs, or other low-power logic circuitry.
3) A 1.25V threshold detector for power-fail warning,
low-battery detection, or for monitoring a power
supply other than +5V.
Features
? Battery-Backup Power Switching
? Precision Supply-Voltage Monitor
4.65V (MAX703)
4.40V (MAX704)
? 200ms Reset Pulse Width
? Debounced TTL/CMOS-Compatible Manual Reset
Input
? 200μA Quiescent Current
? 50nA Quiescent Current in Battery-Backup Mode
? Voltage Monitor for Power-Fail or Low-Battery
Warning
? 8-Pin DIP and SO Packages
? Guaranteed RESET Assertion to V CC = 1V
Ordering Information
4) An active-low manual reset input.
The MAX703 and MAX704 differ only in their supply-
voltage monitor levels. The MAX703 generates a reset
when the supply drops below 4.65V, while the MAX704
generates a reset below 4.40V.
Applications
Computers
Controllers
Intelligent Instruments
Automotive Systems
Critical μP Power Monitoring
Typical Operating Circuit
PART
MAX703 C/D
MAX703CPA
MAX703CSA
MAX703EPA
MAX703ESA
MAX703MJA
MAX704 C/D
MAX704CPA
MAX704CSA
MAX704EPA
MAX704ESA
MAX704MJA
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
PIN-PACKAGE
Dice*
8 PDIP
8 SO
8 PDIP
8 SO
8 CERDIP**
Dice*
8 PDIP
8 SO
8 PDIP
8 SO
8 CERDIP**
*Dice are tested at T A = +25°C only.
UNREGULATED DC
REGULATED +5V
MICROPROCESSOR
**Contact factory for availability and processing to MIL-STD-883.
Devices in PDIP and SO packages are available in both leaded
R1
0.1 μ F
V CC
RESET
V CC
RESET
and lead-free packaging. Specify lead free by adding the +
symbol at the end of the part number when ordering. Lead free
not available for CERDIP package.
3.6V
PFI
PFO
NMI
GND
Pin Configuration
R2
LITHIUM
BATTERY
V BATT
MAX703
MAX704
BUS
TOP VIEW
V OUT 1
8
V BATT
MR
GND
V OUT
V CC
V CC
2
MAX703
7
RESET
CMOS RAM
GND
3
MAX704
6
MR
PUSHBUTTON
SWITCH
GND
PFI 4
5
PFO
DIP/SO
________________________________________________________________ Maxim Integrated Products
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.
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX703-MAX704 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Low-Cost レP Supervisory Circuits with Battery Backup |
| MAX703MJA | 功能描述:监控电路 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 |
| MAX704 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Low-Cost レP Supervisory Circuits with Battery Backup |
| MAX704_C/D | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:3.0V/3.3V Microprocessor Supervisory Circuits |
| MAX704_CPA | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:3.0V/3.3V Microprocessor Supervisory Circuits |
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