DS1832:3.3V MicroMonitor芯片

The DS1832 3.3-volt MicroMonitor Chip is pin-compatible with the industry-standard DS1232 and operates in both 3.0- and 3.3-volt environments. Like the DS1232, the DS1832 monitors power supply, software execution, and an external pushbutton override. It is designed with CMOS outputs and is capable of maintaining a valid output on the active low reset to 0 volts with a 100kΩ pull-down resistor. On power-up, the DS1832 holds reset for 250ms to allow the system to stabilize. Moving a design from 5 volts to 3.3 volts can be as simple as substituting the DS1832 for the DS1232 and removing the pull-up resistor on the active low reset. This makes it a versatile, space- and cost-saving monitor for any processor-driven system requiring reliable operation.

关键特性
  • Power-fail detection
  • Pushbutton reset
  • Watchdog timer
  • Active high and low resets
  • Quiescent current less than 35µA
  • Operating ranges:
    • -40°C to +85°C
    • 3.0V with 20% tolerance or
    • 3.3V with 10% or 20% tolerance
DS1832:原理框图
DS1832:原理框图
数据手册DataSheet
语言下载文件备注
英文DS1832.pdfRev 1; 11/1999
关键参数
Part NumberReset Thresh.
(V)
Reset OuttRESETWatchdog FeatureWatchdog TimeoutSupervisor FeaturesReset Thresh. Accur.
(%)
ICC
(µA)
Package/PinsBudgetary
Price
min@ +25°CmaxSee Notes
DS18322.5 to 3.3
  • Active High
  • Active Low
  • Push-Pull
85ms to 300msNo Watchdog
  • 1s to 2s
  • <1s
Manual Reset2.535
  • µMAX/8
  • PDIP(N)/8
  • SOIC(N)/8
$1.26 @1k
质量和环境数据
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
DS1832停止供货DS1832+PDIP(N),;8引脚;79.7mm²-40°C至+85°CRoHS/无铅:否
DS1832+生产中PDIP(N),;8引脚;79.7mm²-40°C至+85°CRoHS/无铅:无铅
DS1832S停止供货DS1832S+SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
DS1832S+生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
DS1832S+T&R3.3V,2500/盘生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
DS1832S/T&R3.3V,2500/盘停止供货DS1832S/T&R+C05SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
DS1832U停止供货DS1832U+µMAX,;8引脚;15.6mm²-40°C至+85°CRoHS/无铅:否
DS1832U+生产中µMAX,;8引脚;15.6mm²-40°C至+85°CRoHS/无铅:无铅
DS1832U+T&R3.3V,3000/盘生产中µMAX,;8引脚;15.6mm²-40°C至+85°CRoHS/无铅:无铅
DS1832U/T&R3.3V,3000/盘停止供货DS1832U+T&RµMAX,;8引脚;15.6mm²-40°C至+85°CRoHS/无铅:否
DS1832.pdf DS1832
DS1832.pdf DS1832
DS1832.pdf DS1832
DS1832.pdf DS1832
原理框图 DS1832