Overview
The MAX809SQ293D3T1G, produced by onsemi, is a part of the MAX809 series of very low supply current 3-pin microprocessor reset monitors. These devices are designed to monitor the VCC in digital systems and provide a reset signal to the host processor when necessary. The MAX809 series is known for its precision VCC monitoring and low power consumption, making it suitable for a wide range of applications, including battery-powered devices and critical microprocessor power supply monitoring.
Key Specifications
| Characteristic | Value | Unit |
|---|---|---|
| Supply Voltage (VCC to GND) | −0.3 to 6.0 | V |
| Detector Voltage Threshold | 2.93 | V |
| Reset Active Timeout Period | 100 ms | ms |
| Supply Current (VCC = 3.3 V) | 0.5 | μA |
| Operating Temperature | −40°C to 105°C | °C |
| RESET Output Voltage Low (No Load) | 0.3 V (VCC = VTH − 0.2 V, ISINK = 0.5 mA) | V |
| Package Type | SC-70 (SOT-323) |
Key Features
- Precision VCC monitoring for supplies from 1.5 V to 5.0 V, with options available in 100 mV steps.
- Low supply current of 0.5 μA (VCC = 3.2 V), making it suitable for battery-powered applications.
- No external components required.
- Guaranteed minimum power-on reset pulse widths available (1 ms, 20 ms, 100 ms, and 140 ms).
- RESET output guaranteed to VCC = 1.0 V.
- Compatible with hot plug applications.
- VCC transient immunity to reject fast transient glitches on the VCC line.
- 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 MAX809SQ293D3T1G?
The primary function is to monitor the VCC in digital systems and provide a reset signal to the host processor when necessary.
- What are the available reset timeout periods for the MAX809 series?
The available reset timeout periods are 1 ms, 20 ms, 100 ms, and 140 ms.
- What is the typical supply current of the MAX809SQ293D3T1G at VCC = 3.3 V?
The typical supply current is 0.5 μA.
- What is the operating temperature range of the MAX809SQ293D3T1G?
The operating temperature range is −40°C to 105°C.
- Does the MAX809SQ293D3T1G require any external components?
No, it does not require any external components.
- How does the MAX809SQ293D3T1G handle VCC transients?
The device has VCC transient immunity to reject fast transient glitches on the VCC line.
- What is the RESET output voltage low for the MAX809SQ293D3T1G?
The RESET output voltage low is 0.3 V (VCC = VTH − 0.2 V, ISINK = 0.5 mA).
- Is the MAX809SQ293D3T1G Pb-free and RoHS compliant?
- What package type is the MAX809SQ293D3T1G available in?
The device is available in the SC-70 (SOT-323) package.
- How does the MAX809SQ293D3T1G ensure reset signal integrity during power-down?
The RESET output is valid to VCC = 1.0 V. Below this voltage, the output becomes an “open circuit” and does not sink current.
