Product Overview

Product Overview
CAT823: Voltage Supervisor with Manual Reset and Watchdog
For complete documentation, see the data sheet
Product 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
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Automatically Restarts Microprocessor after Power Failure
Monitors Pushbutton for Eexternal 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
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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
CAT823RTDI-GT3
Pb-free
Active
1
5.5
2.63
6
Low
Yes
Yes
Yes
TSOT-235
Active
1
5.5
2.93
6
Low
Yes
Yes
Yes
TSOT-235
Active
1
5.5
3.08
6
Low
Yes
Yes
Yes
TSOT-235
Active
1
5.5
2.19
6
Low
Yes
Yes
Yes
TSOT-235
Active
1
5.5
2.32
6
Low
Yes
Yes
Yes
TSOT-235
Halide free
CAT823STDI-GT3
Pb-free
Halide free
CAT823TTDI-GT3
Pb-free
Halide free
CAT823YTDI-GT3
Pb-free
Halide free
CAT823ZTDI-GT3
Pb-free
Halide free
For more information please contact your local sales support at www.onsemi.com
Created on: 6/30/2016