The S-7750C4104-HCT1 is a voltage detector IC manufactured by SII Semiconductor Corporation. Voltage detectors, also known as voltage supervisors or reset ICs, are designed to monitor the supply voltage of electronic systems and generate a reset signal when the voltage falls below a predefined threshold. This ensures that the system starts up correctly and prevents erroneous operation due to undervoltage conditions.

Applications

• Microcontroller Reset: Generates a reset signal for microcontrollers during power-up or undervoltage conditions.
• Memory Protection: Prevents data corruption in memory devices by initiating a reset when the supply voltage is too low.
• System Monitoring: Monitors the supply voltage of critical system components and provides an alert signal if the voltage falls outside acceptable limits.
• Power Management: Integrates into power management circuits to ensure proper startup and shutdown sequences.
• Industrial Control Systems: Protects sensitive electronic components in industrial control systems from voltage fluctuations.

Features

• Precise Detection Voltage: Accurately detects undervoltage conditions with a defined threshold voltage.
• Low Supply Current: Minimizes power consumption, making it suitable for battery-powered applications.
• Hysteresis: Incorporates hysteresis to prevent oscillations around the threshold voltage.
• Open-Drain Output: Provides an open-drain output, allowing for flexible connection to various logic levels.
• Small Package Size: Available in a compact package for space-constrained applications.
• Wide Operating Temperature Range: Functions reliably over a broad temperature range.

Benefits

• Ensured System Reliability: Prevents system malfunction due to undervoltage conditions, improving overall reliability.
• Data Protection: Protects memory data from corruption during power failures or voltage drops.
• Simplified System Design: Simplifies the design of reset and power management circuits.
• Low Power Consumption: Minimizes battery drain in portable and battery-operated devices.
• Flexible Interfacing: Open-drain output allows for easy interfacing with various logic levels and system architectures.

Additional Details

The S-7750C4104-HCT1 typically has a detection voltage around 4.1V. The hysteresis voltage is designed to prevent chattering near the threshold. It is commonly available in SOT-23 or similar small surface-mount packages. The typical supply current is very low, often in the microampere range. The open-drain output requires a pull-up resistor to the supply voltage. The operating temperature range is generally between -40°C and +85°C. It's essential to consult the device's datasheet for precise voltage detection thresholds, hysteresis values, supply current characteristics, and recommended external components. Proper decoupling capacitors are important for stable operation. The device monitors the power supply and asserts a reset signal when the voltage falls below the threshold. The reset signal remains asserted until the voltage recovers above the threshold plus the hysteresis voltage. The HCT1 suffix may indicate specific packaging or temperature grade.