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CAT824YSDI-GT3 Datasheet(PDF) 1 Page - ON Semiconductor |
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CAT824YSDI-GT3 Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 12 page © Semiconductor Components Industries, LLC, 2012 May, 2012 − Rev. 8 1 Publication Order Number: CAT823/D CAT823, CAT824, CAT825 System Supervisory Voltage Reset with Watchdog and Manual Reset Description The CAT823, CAT824, and CAT825 provide basic reset and monitoring functions for the electronic systems. Each 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 140 ms; to allow the systems power supply to stabilize. The CAT823 and CAT824 also have 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 CAT823 and CAT825 also provide 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 mP Monitors • Portable Equipment PIN FUNCTIONS Pin Name Function RESET CMOS Push−Pull Active Low Reset Output GND Ground MR Manual Reset input – Pulled high Internally by a 52 kW res- istor designed to be driven low by a mechanical pushbutton, open drain output or CMOS output. RESET CMOS Push−Pull Active High Reset Output WDI Watchdog Timer Input – Designed to be driven by a processor output or can be disabled by tri−stating or leaving open. VCC Power Supply http://onsemi.com PIN CONNECTIONS (Top Views) SC−70 SD SUFFIX CASE 419AC TSOT−23 TD SUFFIX CASE 419AE See detailed ordering and shipping information in the package dimensions section on page 11 of this data sheet. ORDERING INFORMATION VCC WDI RESET GND MR CAT823 1 VCC WDI RESET GND RESET CAT824 1 VCC MR RESET GND RESET CAT825 1 XXX = Specific Device Code M = Date Code G = Pb−Free Package* (*Note: Microdot may be in either location) MARKING DIAGRAM XXXMG G |
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