사양
| 속성 | 가치 |
| Package / Case | Tube |
| Part Status | Obsolete |
| Type | Simple Reset/Power-On Reset |
| Number of Voltages Monitored | 1 |
| Voltage - Threshold | 4.65V |
| Output | Push-Pull, Totem Pole |
| Reset | Active High |
| Reset Timeout | 140ms Minimum |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
개요
Description
The MAX813LESA is a microprocessor supervisory circuit designed to monitor power supplies in microprocessor and digital systems. It ensures reliable system operation by preventing code execution errors during power-up, power-down, and brownout conditions. Key features include a reset output that activates whenever the supply voltage drops below a preset threshold, ensuring the system microprocessor is properly reset. This device offers manual reset input for external reset control and a watchdog timer to monitor the microprocessor's activity, resetting it if it fails to toggle within a specified time frame. The MAX813LESA typically operates with low quiescent current, making it suitable for battery-operated applications. Its compact design and integrated functionality help minimize external components, simplifying the system design process and reducing overall cost. This makes it an essential component in applications where maintaining data integrity and reliable operation is critical, such as in embedded systems, industrial controllers, and portable devices.
Equivalent
The MAX813LESA is a microprocessor supervisory circuit. Equivalent products may include:
1. ADM690 series by Analog Devices
2. LTC1232 series by Analog Devices (formerly Linear Technology)
3. DS1232 from Dallas Semiconductor (now part of Maxim Integrated)
4. MCP120/121 series by Microchip Technology
5. TL7705A from Texas Instruments
These components perform similar supervisory functions, like monitoring power supply levels and providing reset signals to microprocessors. Always verify the specific requirements and specifications of your application when choosing a replacement.
1. ADM690 series by Analog Devices
2. LTC1232 series by Analog Devices (formerly Linear Technology)
3. DS1232 from Dallas Semiconductor (now part of Maxim Integrated)
4. MCP120/121 series by Microchip Technology
5. TL7705A from Texas Instruments
These components perform similar supervisory functions, like monitoring power supply levels and providing reset signals to microprocessors. Always verify the specific requirements and specifications of your application when choosing a replacement.
Features
The MAX813LESA is a microprocessor supervisory circuit designed for monitoring system power supplies, ensuring reliable operation. Key features include:
1. Supply Voltage Monitoring: Monitors the voltage level of a power supply. It asserts a reset signal when the voltage drops below a predetermined threshold, ensuring that the microprocessor resets under power-down conditions or brownout events.
2. Reset Output: Provides a reset pulse to the microprocessor to maintain a known state during power-up, power-down, or brownout conditions. The reset pulse ensures that the system restarts correctly when normal conditions resume.
3. Manual Reset Input: Allows external control over the reset function, enabling a manual reset when needed.
4. Watchdog Timer: Monitors the microprocessor operation. If the microprocessor fails to signal correctly, the MAX813LESA initiates a reset, preventing system hang-ups.
5. Power-Fail Comparator: Provides an early warning of impending power failure, allowing the system to perform a controlled shutdown or switch to backup power.
6. Low Power Consumption: Designed to consume minimal power, making it suitable for battery-operated devices.
These features help enhance system reliability and protect against potential failures in embedded systems.
1. Supply Voltage Monitoring: Monitors the voltage level of a power supply. It asserts a reset signal when the voltage drops below a predetermined threshold, ensuring that the microprocessor resets under power-down conditions or brownout events.
2. Reset Output: Provides a reset pulse to the microprocessor to maintain a known state during power-up, power-down, or brownout conditions. The reset pulse ensures that the system restarts correctly when normal conditions resume.
3. Manual Reset Input: Allows external control over the reset function, enabling a manual reset when needed.
4. Watchdog Timer: Monitors the microprocessor operation. If the microprocessor fails to signal correctly, the MAX813LESA initiates a reset, preventing system hang-ups.
5. Power-Fail Comparator: Provides an early warning of impending power failure, allowing the system to perform a controlled shutdown or switch to backup power.
6. Low Power Consumption: Designed to consume minimal power, making it suitable for battery-operated devices.
These features help enhance system reliability and protect against potential failures in embedded systems.
Pinout
The MAX813LESA is a microprocessor supervisory circuit designed to monitor the power supply and provide a reset signal to ensure proper microprocessor operation. It is typically housed in an 8-pin package. The key functions of the MAX813LESA include:
1. Reset Output: Provides a reset signal to the microprocessor during power-up, power-down, and brownout conditions to prevent undefined operations.
2. Manual Reset Input (MR): Allows external components or manual control to trigger a reset.
3. Watchdog Timer: Monitors the microprocessor's activity and triggers a reset if it fails to provide a periodic signal within a specified time window.
4. Power Fail Comparator: Monitors an unregulated power supply voltage and provides an early warning of an impending power failure.
5. Voltage Monitoring: Monitors the power supply voltage and initiates a reset if it falls below a predefined threshold.
6. Debounced Input: Ensures that noise on the reset line does not trigger false resets.
The MAX813LESA is primarily used in applications requiring reliable microprocessor operation by guarding against unexpected power supply variations and ensuring proper system initialization.
1. Reset Output: Provides a reset signal to the microprocessor during power-up, power-down, and brownout conditions to prevent undefined operations.
2. Manual Reset Input (MR): Allows external components or manual control to trigger a reset.
3. Watchdog Timer: Monitors the microprocessor's activity and triggers a reset if it fails to provide a periodic signal within a specified time window.
4. Power Fail Comparator: Monitors an unregulated power supply voltage and provides an early warning of an impending power failure.
5. Voltage Monitoring: Monitors the power supply voltage and initiates a reset if it falls below a predefined threshold.
6. Debounced Input: Ensures that noise on the reset line does not trigger false resets.
The MAX813LESA is primarily used in applications requiring reliable microprocessor operation by guarding against unexpected power supply variations and ensuring proper system initialization.
Manufacturer
The MAX813LESA is manufactured by Maxim Integrated, which is now part of Analog Devices, Inc. Maxim Integrated is known for designing and producing a wide range of analog and mixed-signal integrated circuits. The company is recognized for its expertise in power management, signal processing, and interface technologies. As of the acquisition by Analog Devices in 2021, Maxim Integrated's product offerings have been integrated into Analog Devices' broader portfolio, further strengthening their position in the semiconductor industry. Analog Devices is a well-established company specializing in data conversion, signal processing, and power management technologies, serving various industries including communications, automotive, industrial, and consumer electronics.
Application
The MAX813LESA is a microprocessor supervisory circuit used primarily for monitoring the power supply and ensuring the safe operation of microprocessors and digital systems. Its application areas include embedded systems, industrial control, telecommunications equipment, and consumer electronics. It helps in preventing system crashes by monitoring voltage levels and providing a reset signal during power fluctuations or interruptions. Additionally, it may include functions like a manual reset input, a watchdog timer, and a power-fail comparator, making it suitable for applications requiring reliable operation and protection against power-related issues.
Package
The MAX813LESA is available in an 8-pin SOIC (Small Outline Integrated Circuit) package. This package type is commonly used for surface-mounted devices in electronic circuits.
