Overview
The MAX809LTRG, produced by onsemi, is a cost-effective system supervisor circuit designed to monitor the VCC in digital systems and provide a reset signal to the host processor when necessary. This 3-pin microprocessor reset monitor is optimized for low supply current and high accuracy, making it suitable for a variety of applications, including battery-powered devices and critical microprocessor power supply monitoring.
Key Specifications
| Characteristic | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Power Supply Voltage (VCC to GND) | -0.3 | - | 6.0 | V |
| Supply Current (VCC = 3.3 V) | - | 0.5 | 1.2 | μA |
| Reset Threshold Voltage (VTH) | 4.48 | 4.55 | 4.62 | V |
| VCC to Reset Delay | - | 10 | - | μs |
| Reset Active Timeout Period | 1.0 | - | 140 | ms |
| Operating Temperature | -40 | - | 105 | °C |
| Package Type | - | - | SOT-23, SC-70 | - |
Key Features
- Precision VCC monitoring for 1.5 V, 2.5 V, 3.0 V, 3.3 V, and 5.0 V supplies.
- Precision monitoring voltages from 1.2 V to 4.9 V available in 100 mV steps.
- Four guaranteed minimum power-on reset pulse widths (1 ms, 20 ms, 100 ms, and 140 ms).
- Low supply current of 0.5 μA (VCC = 3.2 V), making it suitable for battery-powered applications.
- Compatible with hot plug applications.
- VCC transient immunity to reject fast transient glitches on the VCC line.
- No external components required.
- Wide operating temperature range: -40°C to 105°C.
- Pb-free and RoHS compliant.
Applications
- Computers
- Embedded systems
- Battery-powered equipment
- Critical microprocessor power supply monitoring
Q & A
- What is the primary function of the MAX809LTRG?
The MAX809LTRG is designed to monitor the VCC in digital systems and provide a reset signal to the host processor when necessary.
- What are the available reset threshold voltages for the MAX809 series?
The reset threshold voltages range from 1.2 V to 4.9 V in 100 mV steps.
- What is the typical supply current of the MAX809LTRG at 3.3 V?
The typical supply current is 0.5 μA at VCC = 3.3 V.
- What are the available reset timeout periods for the MAX809 series?
The reset timeout periods are 1 ms, 20 ms, 100 ms, and 140 ms.
- Is the MAX809LTRG suitable for battery-powered applications?
Yes, due to its low supply current, it is suitable for battery-powered applications.
- What is the operating temperature range of the MAX809LTRG?
The operating temperature range is -40°C to 105°C.
- Does the MAX809LTRG require any external components?
No, the MAX809LTRG does not require any external components.
- How does the MAX809LTRG handle VCC transients?
The MAX809LTRG has VCC transient immunity to reject fast transient glitches on the VCC line.
- Is the MAX809LTRG Pb-free and RoHS compliant?
Yes, the MAX809LTRG is Pb-free and RoHS compliant.
- What are the typical applications of the MAX809LTRG?
Typical applications include computers, embedded systems, battery-powered equipment, and critical microprocessor power supply monitoring.
