The R3111Q421B-TR is a voltage detector (also known as a voltage supervisor) manufactured by Ricoh. It is designed to monitor the supply voltage of electronic circuits and provide a reset signal when the voltage falls below a predefined threshold. This ensures that the system starts up and operates correctly, preventing data corruption or malfunctioning.

Applications

• Microcontroller reset circuits
• CPU reset circuits
• Power-on reset circuits
• Battery voltage monitoring
• System monitoring

Features

• Precise voltage detection: Accurate monitoring of the supply voltage.
• Low power consumption: Minimizes power drain in battery-powered devices.
• Small package size: Allows for compact PCB designs.
• Built-in hysteresis: Prevents chattering during voltage fluctuations.
• Open drain output: Provides flexible interface options.

Benefits

• Reliable system startup: Ensures proper initialization of the system.
• Data protection: Prevents data corruption due to low voltage conditions.
• Long battery life: Low power consumption extends battery life in portable devices.
• Simplified circuit design: Integrated features reduce the need for external components.

Technical Specifications

The R3111Q421B-TR voltage detector has a specific voltage detection threshold, typically around 4.2V in this specific component. It features low power consumption. The built-in hysteresis prevents unwanted reset signals. The open-drain output provides flexibility in interfacing with various microcontroller or microprocessor systems. The -TR suffix usually indicates tape and reel packaging for automated assembly.