The R3112Q421C-TR is a voltage detector IC produced by Ricoh Electronic Devices Co., Ltd. It is designed to monitor the supply voltage and generate a reset signal when the voltage drops below a specific threshold. This functionality is crucial for ensuring the stable and reliable operation of microcontrollers and other sensitive electronic components. The 'TR' suffix denotes that the component is supplied in Tape and Reel packaging for automated assembly processes, and the 'C' likely refers to a specific sub-version with particular tolerance or feature characteristics.

Applications

• Microcontroller reset circuits
• Power supply monitoring
• Battery-powered devices
• Voltage supervision in embedded systems
• Industrial control systems

Features

• High-accuracy detection voltage: Provides precise voltage monitoring, ensuring reliable reset generation.
• Low supply current: Minimizes power consumption, making it suitable for battery-powered applications.
• Small package: Enables compact circuit designs, ideal for space-constrained applications.
• Built-in hysteresis: Prevents output oscillation due to minor voltage fluctuations near the threshold.
• Open drain output: Offers flexible interfacing with other circuits.

Benefits

• Improved system reliability: Prevents erratic behavior and data corruption caused by undervoltage conditions.
• Extended battery life: Reduces power consumption in battery-operated devices.
• Simplified circuit design: Integrates essential voltage monitoring functions into a single component.
• Enhanced noise immunity: Ensures stable operation in noisy environments.
• Flexible integration: Compatible with a wide range of microcontrollers and logic circuits.

Additional Details

The R3112Q421C-TR has a detection voltage of 4.2V. This means it will trigger a reset signal when the supply voltage drops below this level. The low quiescent current consumption is a key benefit, particularly in battery-powered applications where minimizing power drain is essential. The built-in hysteresis prevents unwanted resets caused by minor voltage variations or noise. The open-drain output allows for versatile connections to other circuits, typically via a pull-up resistor. The component is commonly available in a small surface-mount package like SOT-23, making it well-suited for high-density PCB layouts. The typical operating temperature range is -40°C to +85°C. The tape and reel packaging facilitates efficient and cost-effective automated assembly.