CAT824: Voltage Supervisor with Watchdog

The CAT824 provides a basic reset and monitoring function for the electronic systems. This device monitors the system voltage and maintains a reset output until that voltage reaches the device's specified trip value and then maintains the reset output active condition until the device's internal timer, after a minimum timer of 140ms; to allow the systems power supply to stabilize. The CAT824 also has a watchdog input which can be used to monitor a system signal and cause a reset to be issued if the signal fails to change state prior to a timeout condition. The CAT824 also provides a manual reset input which can be used to initiate reset if pulled low. This input can be directly attached to a push-button or a processor signal.

Features
  • Automatically Restarts Microprocessor after Power Failure
  • Monitors Pushbutton for External Override
  • Accurate Under Voltage System Monitoring
  • Brownout Detection System Reset for use with 3.0, 3.3, and 5.0 Volt Systems
  • Pin and Function Compatible with the MAX823/24/25 Products
  • Operating Range from -40°C to +85°C
  • Available in TSOT-23 5-lead and SC-70 Packages
  • These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS Compliant
Applications
  • Microprocessor and Microcontroller Based Systems
  • Intelligent Instruments
  • Control Systems
  • Critical μP Monitors
  • Portable Equipment
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
System Supervisory Voltage Reset with Watchdog and Manual ResetCAT824/D (131.0kB)8
Package Drawings (2)
Document TitleDocument ID/SizeRevision
SC-88A (SC-70 5 Lead), 1.25x2419AC (59.6kB)A
TSOT-23. 5 Lead419AE (54.4kB)revo
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
CAT824LSDI-GT3Last ShipmentsPb-free Halide freeSC-88A-5 / SC-70-5419AC1Tape and Reel3000
CAT824LTDI-GT3Last ShipmentsPb-free Halide freeTSOT-23-5419AE1Tape and Reel3000
CAT824MSDI-GT3Last ShipmentsPb-free Halide freeSC-88A-5 / SC-70-5419AC1Tape and Reel3000
CAT824MTDI-GT3ActivePb-free Halide freeTSOT-23-5419AE1Tape and Reel3000$0.2933
CAT824RSDI-GT3Last ShipmentsPb-free Halide freeSC-88A-5 / SC-70-5419AC1Tape and Reel3000
CAT824RTDI-GT3Last ShipmentsPb-free Halide freeTSOT-23-5419AE1Tape and Reel3000
CAT824SSDI-GT3Last ShipmentsPb-free Halide freeSC-88A-5 / SC-70-5419AC1Tape and Reel3000
CAT824STDI-GT3Last ShipmentsPb-free Halide freeTSOT-23-5419AE1Tape and Reel3000
CAT824TSDI-GT3Last ShipmentsPb-free Halide freeSC-88A-5 / SC-70-5419AC1Tape and Reel3000
CAT824TTDI-GT3Last ShipmentsPb-free Halide freeTSOT-23-5419AE1Tape and Reel3000
CAT824YSDI-GT3Last ShipmentsPb-free Halide freeSC-88A-5 / SC-70-5419AC1Tape and Reel3000
CAT824YTDI-GT3Last ShipmentsPb-free Halide freeTSOT-23-5419AE1Tape and Reel3000
CAT824ZSDI-GT3Last ShipmentsPb-free Halide freeSC-88A-5 / SC-70-5419AC1Tape and Reel3000
CAT824ZTDI-GT3Last ShipmentsPb-free Halide freeTSOT-23-5419AE1Tape and Reel3000
Specifications
ProductVoltages MonitoredVCC Max (V)V(TO) Typ (V)IQ Typ (µA)Reset Active StateReset TimerManual ResetWatchdog Timer
CAT824MTDI-GT315.54.386Low HighYesNoYes
System Supervisory Voltage Reset with Watchdog and Manual Reset (131.0kB) CAT824
SC-88A (SC-70 5 Lead), 1.25x2 CAT824
TSOT-23. 5 Lead CAT24C16