Product Overview: Texas Instruments TPS3305-18 Dual Processor Supervisory Circuit

The TPS3305-18 by Texas Instruments is a sophisticated dual processor supervisory circuit designed to monitor power supply and processor activity in digital systems. It ensures reliable operation and system integrity by providing essential supervisory functions that are crucial for maintaining system health.

This device features two independent voltage supervisors with fixed-sense threshold voltages of 1.8V for the primary channel and a secondary channel that can be set by external resistors. The TPS3305-18 is tailored to keep a vigilant watch over microprocessor reset, power-on reset, and power-down or power-fail warning. Its primary role is to assert a reset signal whenever the VDD supply voltage drops below the designated threshold, ensuring that the processor and the system have a clean start-up every time.

The TPS3305-18 is highly versatile, with applications spanning across a wide range of fields such as:

• Telecommunications
• Computers and Servers
• Portable/Battery-Powered Equipment
• Industrial Controls

Key features of the TPS3305-18 include:

• High Accuracy: With a precision voltage detector, the device ensures accurate monitoring of the system voltage.
• Low Power Consumption: The circuit is designed for minimal power draw, making it suitable for battery-operated devices.
• Manual Reset Input: This allows for an external signal to initiate a system reset, providing additional control to the user.
• Power-On Reset Generator: The built-in generator ensures a reliable start-up of the processor by asserting a reset signal upon power-up.
• Supply Voltage Supervision Range: The TPS3305-18 caters to a broad range of supply voltages, enhancing its adaptability to different system requirements.

The device comes in a small, 8-pin MSOP (Mini Small Outline Package) that is suitable for space-constrained applications. Its operating temperature range from -40°C to +85°C allows for deployment in various environmental conditions.

With its robust feature set and Texas Instruments' reputation for quality, the TPS3305-18 is an excellent choice for ensuring system stability and reliability in a multitude of electronic applications.