5 V和3.3 V电源监视器,看门狗定时器,手动复位,与Active高,低复位 5 V and 3.3 V Supply Monitor, Watchdog Timer, Manual Reset, with Active High & Low Resets
The CAT1832 voltage supervisor can halt and restart a "hung-up" or "stalled" microprocessor, restart a microprocessor after a power failure, and debounce a manual/push-button microprocessor reset switch. The device is a drop in replacement for the Maxim/Dallas Semiconductor DS1832 supervisor. Precision reference and comparator circuits monitor the 3.3 V system power supply voltage, V. During power-up or when the power supply falls outside selectable tolerance limits, both the RESET and become active. After the power supply voltage rises above the RESET threshold voltage, the reset signals remain active for a minimum of 250 ms, allowing the power supply and system processor to stabilize. The trip-point tolerance input, TOL, selects the trip level tolerance to be 10% or 20% for the CAT1832 3.3 V supply. Each device has a push-pull, active HIGH reset output. The CAT1832 also has a push-pull, active LOW reset output. A debounced manual reset input activates the reset outputs and holds them active for a minimum period of 250 ms after being released. Also included is a watchdog timer to reset a microprocessor that has stopped due to a software or hardware failure. Three watchdog time-out periods are selectable: 150 ms, 600 ms and 1.2 sec. If the input is not strobed low before the watchdog time out period expires, the reset signals become active for a minimum of 250 ms.
Features
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\- CAT1232LP for 5.0 V supply
\- CAT1832 for 3.3 V supply
\- Active high, push-pull reset output
\- Active low, push-pull reset output CAT1832
无卤素状态 Halogen Free
阈值电压 2.55V,2.88V
复位电压Min 2.8V, 2.47V
复位电压Max 2.97V, 2.64V
工作温度Max 85 ℃
工作温度Min 40 ℃
电源电压Max 5.5 V
电源电压Min 1 V
安装方式 Surface Mount
封装 MSOP-8
长度 3 mm
宽度 3 mm
高度 0.85 mm
封装 MSOP-8
工作温度 -40℃ ~ 85℃ TA
产品生命周期 Active
包装方式 Tape & Reel TR
制造应用 Single board computers, Microprocessor systems, Controllers, Portable equipment, Instrumentation, Telecommunications
RoHS标准 RoHS Compliant
含铅标准 Lead Free