The SP708SEN is a supervisory circuit manufactured by Sipex Corporation (now part of Exar Corporation). It's designed to monitor the voltage levels of a system and provide a reset signal when the voltage falls below a certain threshold. This ensures that the system starts up properly and prevents data corruption or malfunction due to low voltage conditions.

Applications

• Microprocessor-based systems: Provides reset signal for microprocessors during power-up or brownout conditions.
• Embedded systems: Monitors voltage levels in embedded systems to ensure proper operation.
• Industrial control systems: Protects industrial equipment from voltage fluctuations.
• Automotive electronics: Monitors voltage levels in automotive electronic systems.
• Battery-powered devices: Ensures proper operation of battery-powered devices by monitoring battery voltage.

Features

• Precision voltage monitoring: Accurately monitors the supply voltage.
• Adjustable reset timeout period: Allows for customization of the reset signal duration.
• Active-low reset output: Provides a reset signal when the voltage falls below the threshold.
• Manual reset input: Allows for manual triggering of the reset signal.
• Low supply current: Minimizes power consumption.
• Small package: Available in a small package for space-constrained applications.

Benefits

• System reliability: Ensures proper system startup and prevents malfunction due to low voltage conditions.
• Data protection: Prevents data corruption during power outages or brownout conditions.
• Easy to use: Requires minimal external components.
• Low power consumption: Minimizes power drain on the system.

Additional Details

The SP708SEN typically monitors a 5V supply voltage with a reset threshold of around 4.65V. It provides an active-low reset output that remains asserted until the supply voltage rises above the threshold and the reset timeout period has elapsed. The reset timeout period can be adjusted by connecting a capacitor to the CT pin. The manual reset input allows for manual triggering of the reset signal by pulling the MR pin low. The device is available in various small packages such as SOT-23 and MSOP. The low supply current makes it suitable for battery-powered applications. The SP708SEN is a reliable and cost-effective solution for monitoring voltage levels and providing a reset signal in a wide range of electronic systems.