CAT823: Voltage Supervisor with Manual Reset and Watchdog
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 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
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Applications- Microprocessor and Microcontroller Based Systems
- Intelligent Instruments
- Control Systems
- Critical μP Monitors
- Portable Equipment
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Data Sheets (1)
Package Drawings (2)
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
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| CAT823LSDI-GT3 | Last Shipments | Pb-free
Halide free | SC-88A-5 / SC-70-5 | 419AC | 1 | Tape and Reel | 3000 | |
| CAT823LTDI-GT3 | Last Shipments | Pb-free
Halide free | TSOT-23-5 | 419AE | 1 | Tape and Reel | 3000 | |
| CAT823MSDI-GT3 | Last Shipments | Pb-free
Halide free | SC-88A-5 / SC-70-5 | 419AC | 1 | Tape and Reel | 3000 | |
| CAT823MTDI-GT3 | Last Shipments | Pb-free
Halide free | TSOT-23-5 | 419AE | 1 | Tape and Reel | 3000 | |
| CAT823RSDI-GT3 | Last Shipments | Pb-free
Halide free | SC-88A-5 / SC-70-5 | 419AC | 1 | Tape and Reel | 3000 | |
| CAT823RTDI-GT3 | Active | Pb-free
Halide free | TSOT-23-5 | 419AE | 1 | Tape and Reel | 3000 | $0.2933 |
| CAT823SSDI-GT3 | Last Shipments | Pb-free
Halide free | SC-88A-5 / SC-70-5 | 419AC | 1 | Tape and Reel | 3000 | |
| CAT823STDI-GT3 | Active | Pb-free
Halide free | TSOT-23-5 | 419AE | 1 | Tape and Reel | 3000 | $0.2933 |
| CAT823TSDI-GT3 | Last Shipments | Pb-free
Halide free | SC-88A-5 / SC-70-5 | 419AC | 1 | Tape and Reel | 3000 | |
| CAT823TTDI-GT3 | Active | Pb-free
Halide free | TSOT-23-5 | 419AE | 1 | Tape and Reel | 3000 | $0.2933 |
| CAT823YSDI-GT3 | Last Shipments | Pb-free
Halide free | SC-88A-5 / SC-70-5 | 419AC | 1 | Tape and Reel | 3000 | |
| CAT823YTDI-GT3 | Active | Pb-free
Halide free | TSOT-23-5 | 419AE | 1 | Tape and Reel | 3000 | $0.2933 |
| CAT823ZSDI-GT3 | Last Shipments | Pb-free
Halide free | SC-88A-5 / SC-70-5 | 419AC | 1 | Tape and Reel | 3000 | |
| CAT823ZTDI-GT3 | Active | Pb-free
Halide free | TSOT-23-5 | 419AE | 1 | Tape and Reel | 3000 | $0.2933 |
Specifications
| Product | Voltages Monitored | VCC Max (V) | V(TO) Typ (V) | IQ Typ (µA) | Reset Active State | Reset Timer | Manual Reset | Watchdog Timer |
|---|
| CAT823RTDI-GT3 | 1 | 5.5 | 2.63 | 6 | Low | Yes | Yes | Yes |
| CAT823STDI-GT3 | 1 | 5.5 | 2.93 | 6 | Low | Yes | Yes | Yes |
| CAT823TTDI-GT3 | 1 | 5.5 | 3.08 | 6 | Low | Yes | Yes | Yes |
| CAT823YTDI-GT3 | 1 | 5.5 | 2.19 | 6 | Low | Yes | Yes | Yes |
| CAT823ZTDI-GT3 | 1 | 5.5 | 2.32 | 6 | Low | Yes | Yes | Yes |
