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 | 4.65V |
| Output | Push-Pull, Totem Pole |
| Reset | Active Low |
| ResetTimeout | 140ms Minimum |
| OperatingTemperature | 0°C ~ 70°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
Tổng quan
Description
The MAX705CSA+T is a microprocessor supervisory circuit designed to monitor the power supplies in microprocessor systems. It ensures reliable operation by providing several key functions:
1. Voltage Monitoring: It monitors the supply voltage and generates a reset signal to the microprocessor whenever the voltage drops below a preset threshold, ensuring that the system does not operate under unstable conditions.
2. Reset Functionality: The device provides a reset output during power-up, power-down, and brownout conditions. This helps in preventing the microprocessor from executing erroneous operations.
3. Watchdog Timer: It includes a watchdog timer, which requires regular toggling by the microprocessor to confirm system health. If the microprocessor fails to toggle the watchdog within a specified time frame, a reset is triggered.
4. Power-Fail Comparator: The power-fail comparator gives an early warning of an impending power failure, allowing the system to take necessary steps to safeguard data.
The MAX705CSA+T is compact, easy to integrate, and suitable for a variety of applications, including embedded systems and consumer electronics, where reliable microprocessor operation is critical.
1. Voltage Monitoring: It monitors the supply voltage and generates a reset signal to the microprocessor whenever the voltage drops below a preset threshold, ensuring that the system does not operate under unstable conditions.
2. Reset Functionality: The device provides a reset output during power-up, power-down, and brownout conditions. This helps in preventing the microprocessor from executing erroneous operations.
3. Watchdog Timer: It includes a watchdog timer, which requires regular toggling by the microprocessor to confirm system health. If the microprocessor fails to toggle the watchdog within a specified time frame, a reset is triggered.
4. Power-Fail Comparator: The power-fail comparator gives an early warning of an impending power failure, allowing the system to take necessary steps to safeguard data.
The MAX705CSA+T is compact, easy to integrate, and suitable for a variety of applications, including embedded systems and consumer electronics, where reliable microprocessor operation is critical.
Equivalent
The MAX705CSA+T is a microprocessor supervisory circuit. Equivalent products include the MAX705 series from other manufacturers or similar supervisory circuits with equivalent specifications, such as the ADM705 from Analog Devices, MCP130 from Microchip, and the TC1270 from Microchip. Always verify the specifications like reset threshold, voltage, and timing to ensure compatibility with your application.
Features
The MAX705CSA+T is a microprocessor supervisory circuit designed to enhance the reliability of microprocessor systems. Key features include:
1. Reset Functionality: It provides a precision voltage monitor and ensures a reset output during power-up, power-down, and brownout conditions. It guarantees a reset output for voltages below 4.65V.
2. Watchdog Timer: Includes a watchdog timer that resets the microprocessor if it fails to strobe within a specified timeout period, enhancing system reliability.
3. Manual Reset Input: Features a manual reset input for external override of the reset output.
4. Low Supply Current: Offers a low quiescent current of typically 50µA, optimizing power efficiency.
5. Power-Fail Comparator: Incorporates a power-fail comparator with a separate power-fail input and output.
6. Package and Temperature Range: Available in a space-efficient 8-pin SOIC package and operates over a temperature range of 0°C to +70°C.
These features make the MAX705CSA+T ideal for safeguarding microprocessor-controlled systems, ensuring they operate reliably under various power conditions.
1. Reset Functionality: It provides a precision voltage monitor and ensures a reset output during power-up, power-down, and brownout conditions. It guarantees a reset output for voltages below 4.65V.
2. Watchdog Timer: Includes a watchdog timer that resets the microprocessor if it fails to strobe within a specified timeout period, enhancing system reliability.
3. Manual Reset Input: Features a manual reset input for external override of the reset output.
4. Low Supply Current: Offers a low quiescent current of typically 50µA, optimizing power efficiency.
5. Power-Fail Comparator: Incorporates a power-fail comparator with a separate power-fail input and output.
6. Package and Temperature Range: Available in a space-efficient 8-pin SOIC package and operates over a temperature range of 0°C to +70°C.
These features make the MAX705CSA+T ideal for safeguarding microprocessor-controlled systems, ensuring they operate reliably under various power conditions.
Pinout
The MAX705CSA+T is a microprocessor supervisory circuit designed to monitor power supply levels and provide a reset signal to microprocessors during power-up, power-down, and brownout conditions. It typically comes in an 8-pin SOIC package. Here’s a brief description of its pin functions:
1. RESET (Pin 1): Active-low reset output.
2. RESET (Pin 2): Active-high reset output.
3. MR (Pin 3): Manual reset input, active-low.
4. GND (Pin 4): Ground reference.
5. VCC (Pin 5): Supply voltage input.
6. THRESHOLD (Pin 6): Threshold set pin for reset comparator.
7. WDI (Pin 7): Watchdog input, used to monitor microprocessor activity.
8. CEOUT (Pin 8): Chip-enable output, used to prevent erroneous data during power faults.
This IC ensures a proper reset during power-up/power-down and in the event of a voltage drop below the specified threshold, contributing to the reliability and stability of the system.
1. RESET (Pin 1): Active-low reset output.
2. RESET (Pin 2): Active-high reset output.
3. MR (Pin 3): Manual reset input, active-low.
4. GND (Pin 4): Ground reference.
5. VCC (Pin 5): Supply voltage input.
6. THRESHOLD (Pin 6): Threshold set pin for reset comparator.
7. WDI (Pin 7): Watchdog input, used to monitor microprocessor activity.
8. CEOUT (Pin 8): Chip-enable output, used to prevent erroneous data during power faults.
This IC ensures a proper reset during power-up/power-down and in the event of a voltage drop below the specified threshold, contributing to the reliability and stability of the system.
Manufacturer
The MAX705CSA+T is manufactured by Analog Devices, Inc. This company is a multinational semiconductor company that specializes in the design and manufacturing of analog, mixed-signal, and digital signal processing (DSP) integrated circuits. It serves a wide range of markets, including industrial, automotive, consumer electronics, communications, healthcare, and more. Analog Devices is known for its high-performance products and solutions that address complex engineering challenges across various industries.
Application
The MAX705CSA+T is utilized in applications requiring microprocessor supervisory functions. Its primary application areas include:
1. Embedded Systems: Ensures reliable operation by monitoring the microprocessor's voltage and resetting it if the voltage drops below a certain threshold.
2. Power Management: Manages power supply sequencing and brownout protection in electronic devices.
3. Consumer Electronics: Used in devices to prevent data corruption during power failures.
4. Industrial Controls: Offers system reliability by supervising microcontroller operations in harsh environments.
5. Telecommunications: Ensures stable system performance by providing power-fail detection and reset functionalities.
These applications utilize the MAX705CSA+T for its ability to enhance system reliability and prevent data loss.
1. Embedded Systems: Ensures reliable operation by monitoring the microprocessor's voltage and resetting it if the voltage drops below a certain threshold.
2. Power Management: Manages power supply sequencing and brownout protection in electronic devices.
3. Consumer Electronics: Used in devices to prevent data corruption during power failures.
4. Industrial Controls: Offers system reliability by supervising microcontroller operations in harsh environments.
5. Telecommunications: Ensures stable system performance by providing power-fail detection and reset functionalities.
These applications utilize the MAX705CSA+T for its ability to enhance system reliability and prevent data loss.
Package
The MAX705CSA+T is a microprocessor supervisory circuit that comes in an 8-pin SOIC (Small Outline Integrated Circuit) package. The "+T" indicates it is supplied in a tape and reel format for automated manufacturing processes.
