The CAT809ZEUR-T is a microprocessor supervisory circuit manufactured by Catalyst Semiconductor (now ON Semiconductor). This device provides essential power-on reset and voltage monitoring functions, ensuring reliable operation of microprocessors and microcontrollers. It monitors the supply voltage and asserts a reset signal when the voltage falls below a specified threshold, preventing erroneous code execution and data corruption.

Applications

• Microcontroller-Based Systems: Used in a wide range of microcontroller-based systems to ensure proper power-on and voltage monitoring.
• Embedded Systems: Employed in embedded systems to prevent software crashes and data corruption due to voltage fluctuations.
• Industrial Control Equipment: Utilized in industrial control systems to protect against power supply issues and maintain system stability.
• Automotive Electronics: Used in automotive electronic control units (ECUs) to ensure reliable operation in harsh environments.
• Consumer Electronics: Integrated into consumer electronic devices to prevent malfunctions caused by power supply problems.

Features

• Supply Voltage Monitoring: Monitors the supply voltage and asserts a reset signal when the voltage falls below a specified threshold.
• Power-On Reset (POR): Provides a power-on reset signal to ensure that the microprocessor starts in a known state.
• Reset Timeout Period: Features a fixed or adjustable reset timeout period to ensure that the microprocessor remains in reset until the power supply stabilizes.
• Active-Low Reset Output: Provides an active-low reset output signal, compatible with most microprocessors and microcontrollers.
• Low Power Consumption: Consumes minimal power, making it suitable for battery-powered applications.
• Small Package: Available in small surface-mount packages, minimizing board space requirements.

Benefits

• Reliable Operation: Ensures reliable operation of microprocessors and microcontrollers by preventing erroneous code execution and data corruption.
• Simplified System Design: Simplifies system design by providing essential power-on reset and voltage monitoring functions in a single device.
• Improved System Stability: Improves system stability by preventing malfunctions caused by power supply issues.
• Cost-Effective Solution: Provides a cost-effective solution for ensuring reliable system operation.
• Easy Integration: Easy to integrate into existing designs with minimal changes.

Additional Details

The CAT809ZEUR-T operates within a specified voltage and temperature range. The Z suffix typically denotes a specific voltage threshold. It is typically available in a SOT-23 package. The reset timeout period is often fixed, but some versions offer adjustable timeout periods. The device typically features a push-pull output. The CAT809ZEUR-T is a simple, reliable, and cost-effective solution for supervising microprocessors and ensuring reliable system operation.