Overview
The CAT823RTDI-GT3, produced by onsemi, is a system supervisory voltage reset IC designed to provide essential reset and monitoring functions for electronic systems. This device monitors the system voltage and maintains a reset output until the voltage reaches the specified trip value. It also features a watchdog timer and a manual reset input, making it versatile for various applications. The CAT823RTDI-GT3 operates within a wide temperature range from -40°C to +85°C and is available in a TSOT-23 5-lead package, ensuring it is Pb-free, halogen-free, and RoHS compliant.
Key Specifications
| Parameter | Range/Value | Units |
|---|---|---|
| Supply Voltage (VCC) | 1.2 to 5.5 | V |
| Reset Threshold (VRST) | 2.63 V (for R version) | V |
| Reset Output Low Voltage (VOL) | 0.3 to 0.4 | V |
| Reset Output High Voltage (VOH) | 0.8 x VCC | V |
| Watchdog Timeout Period (tWD) | 1.12 to 3.20 | s |
| Manual Reset Input Voltage (VIL, VIH) | 0.3 x VCC, 0.7 x VCC | V |
| Operating Ambient Temperature | -40 to +85 | °C |
| Storage Temperature | -65 to 150 | °C |
| Lead Soldering Temperature | +300 (10 seconds max) | °C |
Key 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 V systems
- Pin and function compatible with the MAX823/24 products
- Operating range from -40°C to +85°C
- Available in TSOT-23 5-lead package
- Pb-free, halogen-free, and RoHS compliant
Applications
- Microprocessor and microcontroller-based systems
- Intelligent instruments
- Control systems
- Critical power monitors
- Portable equipment
Q & A
- What is the primary function of the CAT823RTDI-GT3? The primary function is to monitor system voltage and provide reset outputs to ensure correct system operation.
- What is the watchdog timeout period for the CAT823RTDI-GT3? The watchdog timeout period ranges from 1.12 to 3.20 seconds.
- How does the manual reset input work? The manual reset input can be pulled low to initiate a reset; it is internally pulled up by a 52 kΩ resistor.
- What is the operating temperature range for the CAT823RTDI-GT3? The operating temperature range is from -40°C to +85°C.
- Is the CAT823RTDI-GT3 RoHS compliant? Yes, it is Pb-free, halogen-free, and RoHS compliant.
- What package type is the CAT823RTDI-GT3 available in? It is available in a TSOT-23 5-lead package.
- What are the typical applications for the CAT823RTDI-GT3? Typical applications include microprocessor and microcontroller-based systems, intelligent instruments, control systems, critical power monitors, and portable equipment.
- What is the reset threshold voltage for the R version of the CAT823RTDI-GT3? The reset threshold voltage for the R version is 2.63 V.
- How does the device handle power transients? Short duration negative-going transients of less than 2 μs at VRST minimum generally do not cause a reset condition, but proper bypass capacitance is recommended to mitigate these issues.
- Can the watchdog timer be disabled? Yes, the watchdog timer can be disabled by floating or tri-stating the WDI input.
