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主要特征
应用/用途
Parametric specs for Battery Backup Circuits
Reset Thresh. (V) | 2.5 to 3.3 |
Reset Out | Active High Active Low Open Drain Push-Pull |
ICC (µA) (max) | 60 |
Oper. Temp. (°C) | -40 to +85 0 to +70 |
Package/Pins | PDIP/16 SOIC (N)/16 |
Budgetary Price (See Notes) | 4.96 |
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Technical Docs
数据资料 | 3.0V/3.3V可调、微处理器监控电路 | Mar 29, 2010 |
参量
Parametric specs for Battery Backup Circuits
Reset Thresh. (V) | 2.5 to 3.3 |
Reset Out | Active High Active Low Open Drain Push-Pull |
ICC (µA) (max) | 60 |
Oper. Temp. (°C) | -40 to +85 0 to +70 |
Package/Pins | PDIP/16 SOIC (N)/16 |
Budgetary Price (See Notes) | 4.96 |
主要特征
MAX793/MAX794/MAX795
- Precision Supply-Voltage Monitor:
- Fixed Reset Trip Voltage (MAX793/MAX795)
- Adjustable Reset Trip Voltage (MAX794)
- Guaranteed Reset Assertion to VCC = 1V
- Backup-Battery Power Switching—Battery Voltage Can Exceed VCC
- On-Board Gating of Chip-Enable Signals—7ns Max Propagation Delay
- Battery Freshness Seal
- Battery OK Output (MAX793)
- Uncommitted Voltage Monitor for Power-Fail or Low-Battery Warning
- Independent Watchdog Timer (1.6s timeout)
- Manual Reset Input
应用/用途
- 电池供电计算机/控制器
- 精确的µP电源监控
- 嵌入式控制器
- 智能控制器
- 便携式设备
描述
The MAX793/MAX794/MAX795 microprocessor (µP) supervisory circuits monitor and control the activities of +3.0V/+3.3V µPs by providing backup-battery switchover, among other features such as low-line indication, µP reset, write protection for CMOS RAM, and a watchdog (see the Selector Guide in the full data sheet). The backup-battery voltage can exceed VCC, permitting the use of 3.6V lithium batteries in systems using 3.0V to 3.3V for VCC.
The MAX793/MAX795 offer a choice of reset threshold voltage range (denoted by suffix letter): 3.00V to 3.15V (T), 2.85V to 3.00V (S), and 2.55V to 2.70V (R). The MAX794's reset threshold is set externally with a resistor divider. The MAX793/MAX794 are available in 16-pin DIP and narrow SO packages, and the MAX795 comes in 8-pin DIP and SO packages.
The MAX793/MAX795 offer a choice of reset threshold voltage range (denoted by suffix letter): 3.00V to 3.15V (T), 2.85V to 3.00V (S), and 2.55V to 2.70V (R). The MAX794's reset threshold is set externally with a resistor divider. The MAX793/MAX794 are available in 16-pin DIP and narrow SO packages, and the MAX795 comes in 8-pin DIP and SO packages.
Technical Docs
数据资料 | 3.0V/3.3V可调、微处理器监控电路 | Mar 29, 2010 |