Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Tape & Reel (TR),Bulk |
| ProductStatus | Obsolete |
| Type | Simple Reset/Power-On Reset |
| NumberofVoltagesMonitored | 1 |
| Voltage-Threshold | 2.93V |
| Output | Push-Pull, Totem Pole |
| Reset | Active Low |
| ResetTimeout | 140ms Minimum |
| OperatingTemperature | -40°C ~ 105°C (TA) |
| MountingType | Surface Mount |
| Package/Case | TO-236-3, SC-59, SOT-23-3 |
Tổng quan
Description
The MAX809SEUR+T is a microprocessor supervisory circuit designed to monitor the supply voltage in microprocessor systems and initiate a reset when the voltage goes below a pre-set threshold. This ensures that the system operates correctly and does not encounter undefined behavior due to low voltage conditions. The device is housed in a small SOT23 package, making it suitable for applications with space constraints.
Key features of the MAX809SEUR+T include:
1. Precision Monitoring: It monitors the voltage with high precision and ensures the reset signal is activated if the voltage drops below the specified threshold, thus protecting the system.
2. Low Supply Current: The device consumes minimal power, making it ideal for battery-operated devices.
3. Active-Low Reset Output: The reset output is active-low, which means it triggers a reset signal by pulling the line low when the voltage threshold is breached.
4. No External Components Required: It simplifies design requirements as it does not need any external components to function effectively.
This makes the MAX809SEUR+T a reliable choice for maintaining system stability in electronic devices.
Key features of the MAX809SEUR+T include:
1. Precision Monitoring: It monitors the voltage with high precision and ensures the reset signal is activated if the voltage drops below the specified threshold, thus protecting the system.
2. Low Supply Current: The device consumes minimal power, making it ideal for battery-operated devices.
3. Active-Low Reset Output: The reset output is active-low, which means it triggers a reset signal by pulling the line low when the voltage threshold is breached.
4. No External Components Required: It simplifies design requirements as it does not need any external components to function effectively.
This makes the MAX809SEUR+T a reliable choice for maintaining system stability in electronic devices.
Equivalent
The MAX809SEUR+T is a microprocessor reset IC. Equivalent products include:
1. Microchip MCP130 series (MCP130T-450I/TT)
2. Texas Instruments TPS3808 series (TPS3808G33DBVT)
3. Diodes Incorporated APX809 series (APX809-29SAG-7)
4. STMicroelectronics STM809 series (STM809SM6F)
These alternatives offer similar functionality, such as voltage monitoring and reset signal generation for microprocessors. Always check the datasheet for pin compatibility and specific application requirements.
1. Microchip MCP130 series (MCP130T-450I/TT)
2. Texas Instruments TPS3808 series (TPS3808G33DBVT)
3. Diodes Incorporated APX809 series (APX809-29SAG-7)
4. STMicroelectronics STM809 series (STM809SM6F)
These alternatives offer similar functionality, such as voltage monitoring and reset signal generation for microprocessors. Always check the datasheet for pin compatibility and specific application requirements.
Features
The MAX809SEUR+T is a microprocessor supervisory circuit designed to monitor the power supply voltage in digital systems and provide a reset signal to the processor during power-up, power-down, and brownout conditions. Key features include:
1. Voltage Monitoring: Typically monitors a single voltage threshold to ensure the system operates within the specified voltage range.
2. Reset Output: Provides an active-low reset output to prevent code execution errors during power supply disturbances.
3. Precision Threshold: Features a fixed threshold voltage, ensuring accurate monitoring of power supply levels.
4. Low Supply Current: Consumes minimal current, making it suitable for battery-powered applications.
5. Fast Response Time: Offers a quick response to voltage changes, critical for maintaining the integrity of the system.
6. Small Footprint: Available in a compact SOT-23 package, ideal for space-constrained applications.
These characteristics make the MAX809SEUR+T suitable for a wide range of applications, including embedded systems, computers, and other electronic devices requiring reliable power supervision.
1. Voltage Monitoring: Typically monitors a single voltage threshold to ensure the system operates within the specified voltage range.
2. Reset Output: Provides an active-low reset output to prevent code execution errors during power supply disturbances.
3. Precision Threshold: Features a fixed threshold voltage, ensuring accurate monitoring of power supply levels.
4. Low Supply Current: Consumes minimal current, making it suitable for battery-powered applications.
5. Fast Response Time: Offers a quick response to voltage changes, critical for maintaining the integrity of the system.
6. Small Footprint: Available in a compact SOT-23 package, ideal for space-constrained applications.
These characteristics make the MAX809SEUR+T suitable for a wide range of applications, including embedded systems, computers, and other electronic devices requiring reliable power supervision.
Pinout
The MAX809SEUR+T is a voltage-monitoring IC designed to supervise microprocessor activity. It is commonly used to monitor the supply voltage and to generate a reset signal when the voltage drops below a preset threshold. This device comes in a SOT-23 package and has a pin count of 3.
The primary functions of the pins are as follows:
1. GND (Pin 1): Ground pin for the IC.
2. RESET (Pin 2): Active-low reset output. This pin goes low when the monitored voltage drops below the specified threshold, triggering a reset in the microprocessor.
3. VCC (Pin 3): Supply voltage input pin. This is the pin through which the IC monitors the supply voltage.
The MAX809SEUR+T is used to ensure that a system starts in a known state and remains stable by preventing operations at insufficient voltage levels.
The primary functions of the pins are as follows:
1. GND (Pin 1): Ground pin for the IC.
2. RESET (Pin 2): Active-low reset output. This pin goes low when the monitored voltage drops below the specified threshold, triggering a reset in the microprocessor.
3. VCC (Pin 3): Supply voltage input pin. This is the pin through which the IC monitors the supply voltage.
The MAX809SEUR+T is used to ensure that a system starts in a known state and remains stable by preventing operations at insufficient voltage levels.
Manufacturer
The MAX809SEUR+T is manufactured by Maxim Integrated, which is now part of Analog Devices, Inc. Maxim Integrated was a company specializing in analog and mixed-signal integrated circuits, and it was acquired by Analog Devices in 2021. Analog Devices is a multinational semiconductor company known for designing and manufacturing a wide range of products, including analog, mixed-signal, and digital signal processing (DSP) integrated circuits. These products serve various applications across industries such as automotive, communications, industrial, healthcare, and consumer electronics. The MAX809SEUR+T itself is a microprocessor supervisory circuit, designed to monitor power supplies in digital systems and provide a reset output during power-up, power-down, and brownout conditions.
Application
The MAX809SEUR+T is a microprocessor supervisory circuit used primarily for monitoring the power supply in microcontroller and microprocessor applications. Its main application areas include:
1. Embedded Systems: Ensures reliable operation by resetting the microcontroller during power failures or voltage drops.
2. Consumer Electronics: Used in devices like TVs and smartphones to prevent data corruption due to power issues.
3. Industrial Automation: Monitors power supply for programmable logic controllers (PLCs) to ensure system stability.
4. Automotive Electronics: Provides voltage monitoring in automotive control systems to enhance safety and reliability.
5. Networking Equipment: Maintains stable operation of routers and switches by supervising power conditions.
1. Embedded Systems: Ensures reliable operation by resetting the microcontroller during power failures or voltage drops.
2. Consumer Electronics: Used in devices like TVs and smartphones to prevent data corruption due to power issues.
3. Industrial Automation: Monitors power supply for programmable logic controllers (PLCs) to ensure system stability.
4. Automotive Electronics: Provides voltage monitoring in automotive control systems to enhance safety and reliability.
5. Networking Equipment: Maintains stable operation of routers and switches by supervising power conditions.
Package
The MAX809SEUR+T is a microprocessor supervisory circuit in a SOT-23 package type. This small-outline transistor package is designed for surface mounting on PCBs, providing a compact solution for monitoring power supply levels in microprocessor applications.
