Product Overview CAT824: Voltage Supervisor with Watchdog For complete documentation, see the data sheet Product Description 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 Part Electrical Specifications Product Compliance Status Voltages Monitored VCC Max (V) V(TO) Typ (V) IQ Typ (µA) Reset Active State Reset Timer Manual Reset Watchdog Timer Package Type CAT824MTDI-GT3 Pb-free Active 1 5.5 4.38 6 Low Yes No Yes TSOT-235 Halide free High For more information please contact your local sales support at www.onsemi.com Created on: 6/30/2016