Overview
The MAX6369KA+TG24 is a pin-selectable watchdog timer produced by Analog Devices Inc./Maxim Integrated. This component is designed to supervise microprocessor (μP) activity and signal when a system is operating improperly. It is part of the MAX6369–MAX6374 series, which offers a range of watchdog timer configurations.
The device operates over a supply voltage range of +2.5V to +5.5V and is available in a miniature 8-pin SOT23 package, making it suitable for various embedded and industrial applications.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| Operating Voltage Range | VCC | 2.5 | 5.5 | V | ||
| Supply Current | ICC | No load, TA = -40°C to +85°C | 8 | 20 | µA | |
| Supply Current | ICC | No load, TA = -40°C to +125°C | 10 | 22 | µA | |
| Input High Voltage | VIH | WDI, SET0, SET1, SET2 | 0.8 x VCC | V | ||
| Input Low Voltage | VIL | WDI, SET0, SET1, SET2, VCC ≥ 3.3V, TA = -40°C to +85°C | 0.2 x VCC | V | ||
| Watchdog Timeout Period | tWD | VSET2 = 0V, SET1 = 0V, SET0 = VCC | 300 | 900 | ms | |
| Startup Delay Period | tDELAY | VSET2 = 0V, SET1 = 0V, SET0 = VCC | 3 | 9 | s |
Key Features
- Precision Watchdog Timer for Critical μP Applications
- Pin-Selectable Watchdog Timeout Periods
- Pin-Selectable Watchdog Startup Delay Periods
- Ability to Change Watchdog Timing Characteristics Without Power Cycling
- Open-Drain or Push-Pull Pulsed Active-Low Watchdog Output
- Watchdog Timer Disable Feature
- +2.5V to +5.5V Operating Voltage Range
- Low Supply Current (8μA typical)
- No External Components Required
- Miniature 8-Pin SOT23 Package
- AEC-Q100 Qualified (for certain versions)
Applications
- Embedded Control Systems
- Industrial Controllers
- Automotive Systems (AEC-Q100 qualified versions)
- Medical Devices
- Consumer Electronics
- Industrial Automation
Q & A
- What is the operating voltage range of the MAX6369KA+TG24?
The operating voltage range is +2.5V to +5.5V.
- What is the typical supply current of the MAX6369KA+TG24?
The typical supply current is 8μA.
- What are the watchdog output options for the MAX6369KA+TG24?
The watchdog output options are open-drain or push-pull pulsed active-low.
- Can the watchdog timing characteristics be changed without power cycling?
- What is the package type of the MAX6369KA+TG24?
The package type is a miniature 8-pin SOT23.
- Is the MAX6369KA+TG24 AEC-Q100 qualified?
Certain versions of the MAX6369 series are AEC-Q100 qualified, but it depends on the specific part number.
- What are some common applications for the MAX6369KA+TG24?
Common applications include embedded control systems, industrial controllers, and automotive systems.
- Does the MAX6369KA+TG24 require external components to operate?
No, the MAX6369KA+TG24 does not require external components to operate.
- What is the temperature range for the MAX6369KA+TG24?
The temperature range is -40°C to +125°C.
- How can the watchdog timer be disabled on the MAX6369KA+TG24?
The watchdog timer can be disabled by setting the appropriate pin configurations.
