CAT812TTBI-T3

Supervisors Overview

The CAT812TTBI-T3 is a microprocessor power supply supervisor manufactured by onsemi, designed to monitor voltage rails in embedded systems. It features an active-high push-pull reset output and operates within a supply voltage range of 1.2 V to 5.5 V. The device provides precise monitoring for standard logic levels including +5.0 V, +3.3 V, +3.0 V, and +2.5 V supplies. It incorporates a manual reset input and ensures reset validity down to 1.0 V. Packaged in a compact SOT-143 form factor, it supports industrial temperature ranges from -40°C to +85°C with low quiescent current consumption.

Supervisors Feature Summary

• Provides active-high reset signal for reliable system initialization
• Includes manual reset input for external control capabilities
• Ensures reset validity at low supply voltages down to 1.0 V
• Offers high immunity to power supply transients

Supervisors Applications

• Computers and server infrastructure
• Wireless communication devices
• Embedded control systems
• Portable handheld equipment

Supervisors Procurement Notes

Verify the specific threshold voltage variant required for your design, as the CAT812 family covers multiple monitoring levels. Confirm package availability and lead times through authorized distributors. Ensure the active-high output configuration aligns with the target microprocessor reset requirements. Check for RoHS compliance status if mandated by regional regulations.

Supervisors Selection Notes

Select this component when an active-high reset signal is necessary for the target processor. Compare against the CAT811 series if an active-low output is preferred instead. Consider the manual reset feature if external hardware reset capability is required. Verify that the operating voltage range matches the monitored rail specifications.

Supervisors Part Context

This part belongs to the CAT811/CAT812 family of supervisory circuits, which serve as direct replacements for legacy MAX811/MAX812 components. The family is characterized by low power consumption and robust performance in industrial environments. These supervisors are widely used in applications requiring dependable power management and system protection.

Supervisors Replacement Considerations

The CAT812TTBI-T3 is documented as a direct replacement for the Maxim Integrated MAX812 in industrial temperature applications. Designers transitioning from older generations should verify pin compatibility and output polarity alignment.