Overview
The MAX809TTR, part of the MAX809 series, is a cost-effective system supervisor circuit designed by onsemi to monitor the VCC in digital systems and provide a reset signal to the host processor when necessary. These devices are optimized to reject fast transient glitches on the VCC line and do not require any external components. The MAX809TTR is particularly suited for battery-powered applications due to its low supply current of 0.5 µA at VCC = 3.3 V. It is available in SOT-23 and SC-70 packages, making it compact and versatile for various applications.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VCC Range | - | 1.0 | - | 5.5 | V |
| Supply Current (VCC = 3.3 V) | ICC | - | 0.5 | 1.2 | µA |
| Reset Threshold (e.g., MAX809TTR) | VTH | 3.08 | - | 3.08 | V |
| VCC to Reset Delay | - | - | 10 | - | µsec |
| Reset Active TimeOut Period | tRP | 140 | - | 460 | msec |
| RESET Output Voltage Low (No Load) | VOL | - | - | 0.3 | V |
| Operating Junction Temperature Range | TJ | -40 | - | 105 | °C |
Key Features
- Precision VCC monitoring for supplies from 1.2 V to 4.9 V in 100 mV steps.
- Four guaranteed minimum power-on reset pulse widths available (1 ms, 20 ms, 100 ms, and 140 ms).
- Low supply current of 0.5 µA (VCC = 3.3 V), making it suitable for battery-powered applications.
- Compatible with hot plug applications and VCC transient immunity.
- No external components required.
- Wide operating temperature range: -40°C to 105°C.
- Pb-free packages available.
Applications
- Computers and embedded systems.
- Battery-powered equipment.
- Critical microprocessor power supply monitoring).
- Systems requiring accurate VCC monitoring and reset timing during power-up, power-down, and brownout/sag conditions).
Q & A
- What is the primary function of the MAX809TTR?
The MAX809TTR is designed to monitor the VCC in digital systems and provide a reset signal to the host processor when necessary.
- What package types are available for the MAX809TTR?
The MAX809TTR is available in SOT-23 and SC-70 packages.
- What is the typical supply current of the MAX809TTR at VCC = 3.3 V?
The typical supply current is 0.5 µA at VCC = 3.3 V.
- What are the available reset pulse widths for the MAX809TTR?
The available reset pulse widths are 1 ms, 20 ms, 100 ms, and 140 ms.
- Does the MAX809TTR require any external components?
No, the MAX809TTR does not require any external components.
- What is the operating temperature range of the MAX809TTR?
The operating temperature range is -40°C to 105°C.
- How does the MAX809TTR handle transient glitches on the VCC line?
The MAX809TTR is optimized to reject fast transient glitches on the VCC line.
- What types of applications are the MAX809TTR suitable for?
The MAX809TTR is suitable for computers, embedded systems, battery-powered equipment, and critical microprocessor power supply monitoring.
- Is the MAX809TTR compatible with hot plug applications?
Yes, the MAX809TTR is compatible with hot plug applications.
- Are Pb-free packages available for the MAX809TTR?
Yes, Pb-free packages are available for the MAX809TTR.
