MAX793R, MAX793S, MAX793T:3.0V/3.3V可调、微处理器监控电路

功能完备的电池备份IC,用于3V/3.3V系统

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.

关键特性
  • 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
MAX793、MAX793R、MAX793S、MAX793T、MAX794、MAX795、MAX795R、MAX795S、MAX795T:典型工作电路
MAX793、MAX793R、MAX793S、MAX793T、MAX794、MAX795、MAX795R、MAX795S、MAX795T:典型工作电路
应用
  • 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
数据手册DataSheet
语言下载文件备注
英文MAX793-MAX795T.pdfRev 6; 03/2010
关键参数
Part NumberReset Thresh.
(V)
Reset OutICC
(µA)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
maxSee Notes
MAX7932.5 to 3.3
  • Active High
  • Active Low
  • Open Drain
  • Push-Pull
60
  • -40 to +85
  • 0 to +70
  • PDIP(N)/16
  • SOIC(N)/16
$4.46 @1k
MAX794
  • 1.2 to 1.8
  • 1.8 to 2.5
  • 2.5 to 3.3
  • 3.3 to 5.5
  • Active High
  • Active Low
  • Open Drain
  • Push-Pull
60
  • PDIP(N)/16
  • SOIC(N)/16
$4.32 @1k
MAX7952.5 to 3.3
  • Active Low
  • Open Drain
50
  • PDIP(N)/8
  • SOIC(N)/8
$3.73 @1k
质量和环境数据
相关产品
  • MAX800:微处理器监控电路
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX793RCPE停止供货MAX793RCPE+PDIP(N),;16引脚;158.4mm²0°C至+70°CRoHS/无铅:否
MAX793RCPE+生产中PDIP(N),;16引脚;158.4mm²0°C至+70°CRoHS/无铅:无铅
MAX793RCSE停止供货MAX793RCSE+SOIC(N),;16引脚;61.9mm²0°C至+70°CRoHS/无铅:否
MAX793RCSE+生产中SOIC(N),;16引脚;61.9mm²0°C至+70°CRoHS/无铅:无铅
MAX793RCSE+T生产中SOIC(N),;16引脚;61.9mm²0°C至+70°CRoHS/无铅:无铅
MAX793RCSE-T停止供货MAX793RCSE+TSOIC(N),;16引脚;61.9mm²0°C至+70°CRoHS/无铅:否
MAX793REPE停止供货MAX793REPE+PDIP(N),;16引脚;158.4mm²-40°C至+85°CRoHS/无铅:否
MAX793REPE+生产中PDIP(N),;16引脚;158.4mm²-40°C至+85°CRoHS/无铅:无铅
MAX793RESE停止供货MAX793RESE+SOIC(N),;16引脚;61.9mm²-40°C至+85°CRoHS/无铅:否
MAX793RESE+生产中SOIC(N),;16引脚;61.9mm²-40°C至+85°CRoHS/无铅:无铅
型号状况推荐替代产品封装:类型 引脚 占位面积封装图 编码/变更 *温度RoHS/无铅?
MAX793RESE+T生产中SOIC(N),;16引脚;61.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX793RESE-T停止供货MAX793RESE+TN.SO;16引脚-40°C至+85°C参考数据资料
MAX793-MAX795T.pdf MAX795T
MAX793T.pdf MAX793T
MAX793-MAX795T.pdf MAX795T