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电路监控、电压监测器及排序器 
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MyMaxim 订阅产品详情
Parametric specs for Supervisors (1 Monitored Voltage)
| Reset Thresh. (V) | 3.3 to 5.5 |
| Reset Thresh. Accur. (%) (@ +25°C) | 2.5 |
| Reset Out | Active High Active Low Push-Pull |
| tRESET (min) | 85ms to 300ms |
| Watchdog Feature | No Watchdog |
| Supervisor Features | Adjustable Reset Input Manual Reset Power Fail Comparator/Low Battery Detect |
| ICC (µA) (max) | 60 |
| Package/Pins | PDIP/8 SOIC (N)/8 UMAX/8 |
| Budgetary Price (See Notes) | 2.23 |
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参量
Parametric specs for Supervisors (1 Monitored Voltage)
| Reset Thresh. (V) | 3.3 to 5.5 |
| Reset Thresh. Accur. (%) (@ +25°C) | 2.5 |
| Reset Out | Active High Active Low Push-Pull |
| tRESET (min) | 85ms to 300ms |
| Watchdog Feature | No Watchdog |
| Supervisor Features | Adjustable Reset Input Manual Reset Power Fail Comparator/Low Battery Detect |
| ICC (µA) (max) | 60 |
| Package/Pins | PDIP/8 SOIC (N)/8 UMAX/8 |
| Budgetary Price (See Notes) | 2.23 |
主要特征
- Holds microprocessor in check during power transients
- Automatically restarts microprocessor after power failure
- Monitors pushbutton for external override
- Accurate 5%, 10% or 20% resets for 3.3V systems and 5% or 10% resets for 5.0V systems
- Eliminates the need for discrete components
- 20% tolerance compatible with 3.0V systems
- Pin compatible with the MAXIM MAX707/MAX708 in 8-pin DIP, 8-pin SO packages
- 8-pin DIP, 8-pin and µSOP SO and 8-pin µSOP packages available
- Industrial temperature range -40°C to +85°C
应用/用途
描述
The DS1707/DS1708 3.3- or 5.0-Volt MicroMonitor monitors three vital conditions for a microprocessor: power supply, voltage sense, and external override. A precision temperature-compensated reference and comparator circuit monitor the status of VCC at the device and at an upstream point for maximum protection. When the sense input detects an out-of-tolerance condition a non-maskable interrupt is generated. As the voltage at the device degrades an internal power fail signal is generated which forces the reset 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 130ms to allow the power supply and processor to stabilize.
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