The R3112Q421A-TR-F is a voltage detector IC manufactured by Ricoh. This IC is designed to monitor voltage levels in electronic circuits and provide a reset signal when the voltage drops below a specified threshold. It's commonly used in microcontrollers and other digital circuits to ensure proper operation and prevent data corruption during power failures or brownouts.

Applications:

• Microcontroller reset circuits
• Power-on reset circuits
• Battery voltage monitoring
• System voltage supervision
• Data protection during power failure

Features:

• Detection Voltage: 4.2V
• Low supply current
• Open drain output
• Small package size
• High accuracy detection voltage

Benefits:

• Ensures reliable operation of microcontrollers and other digital circuits
• Prevents data corruption during power failures or brownouts
• Extends battery life due to low supply current
• Reduces component count and board space
• Enhances system reliability and stability

Additional Details:

The R3112Q421A-TR-F offers precise voltage detection and a fast response time to voltage drops. The open drain output allows for flexible interfacing with different logic levels. The device is available in a compact package suitable for surface mount assembly. The “-TR-F” suffix typically indicates tape and reel packaging and lead-free construction. Proper selection of the detection voltage is critical for ensuring optimal system performance and data integrity.