The S-80721AN-DJ-T1 is a voltage detector IC manufactured by SII Semiconductor Corporation. This integrated circuit monitors the input voltage and generates a reset signal when the voltage drops below a specific threshold. This ensures the stable operation of microcontrollers, CPUs, and other digital circuits by preventing them from operating with insufficient voltage.

Applications

• Microcontroller reset circuits
• Power-on reset (POR) circuits
• Battery voltage monitoring
• System voltage monitoring
• Overvoltage/Undervoltage protection

Features

• High-precision detection voltage
• Ultra-low current consumption
• Built-in hysteresis
• Small SOT-23-5 package
• Wide operating temperature range

Benefits

• Prevents erratic operation of microcontrollers due to voltage fluctuations.
• Extends battery life in portable devices due to low current draw.
• Ensures stable reset signals by preventing oscillation around the threshold voltage.
• Easy integration into compact designs due to the small package size.
• Suitable for use in a wide range of environments.

Detailed Specifications

The S-80721AN-DJ-T1 has a detection voltage of 2.1V. It features ultra-low current consumption to minimize its impact on the power supply. The built-in hysteresis prevents the output signal from oscillating when the input voltage is near the threshold level. The SOT-23-5 package allows for easy integration into small form factor applications. The operating temperature range is from -40°C to +85°C. The output is an N-channel open drain output.

The reset signal ensures that the system starts in a known state, preventing data corruption and ensuring correct operation. This is especially crucial in applications where reliability is paramount.