The SE809-HF-2.93V from Seaward Electronics Inc. is a voltage detector or voltage supervisor IC. It's designed to monitor voltage levels in electronic circuits and provide a reset signal to a microcontroller or other system component when the voltage drops below a specified threshold. The "2.93V" in the part number indicates the voltage threshold level at which the reset signal is asserted.

Applications:

• Microcontroller Systems: Power-on reset, brown-out protection, and voltage monitoring.
• Embedded Systems: Voltage supervision in various embedded applications.
• Industrial Control: Process control, safety systems, and voltage monitoring of critical components.
• Automotive Electronics: Voltage monitoring and reset generation in automotive ECUs.
• Consumer Electronics: Power supply monitoring and reset functionality in consumer devices.

Features:

• Precise Voltage Detection: Accurately monitors voltage levels.
• Fixed Threshold Voltage: Predetermined voltage threshold for reset generation (2.93V).
• Open-Drain Output: Provides a flexible interface to microcontrollers and other logic circuits.
• Low Supply Current: Minimizes power consumption.
• Small Package: Compact size for space-constrained applications.
• RoHS Compliant: Meets environmental regulations for hazardous substances.

Benefits:

• Improved System Reliability: Prevents system malfunction due to low voltage conditions.
• Simplified Design: Easy to integrate into existing circuits.
• Reduced Power Consumption: Low supply current minimizes power usage.
• Space-Saving Solution: Compact package allows for integration into small devices.
• Environmentally Friendly: RoHS compliance ensures compliance with environmental standards.

Additional Details:

The SE809-HF-2.93V typically features an open-drain output, requiring a pull-up resistor to the supply voltage. The reset output remains low as long as the input voltage is below the threshold. When the input voltage rises above the threshold, the output will transition high after a specified delay time.

Key Specifications:

• Threshold Voltage: 2.93V
• Supply Voltage: Typically 2.5V to 5.5V (check datasheet)
• Output Type: Open Drain
• Operating Temperature: -40°C to +85°C (check datasheet)
• Package: SOT-23, etc. (check datasheet)