CAT812LTBI-GT3

Supervisors Overview

The CAT812LTBI-GT3 is a microprocessor supervisory circuit manufactured by onsemi, designed to monitor power supply voltages with high precision. It features an active HIGH push-pull reset output and includes a manual reset input for system control. The device operates within an industrial temperature range of -40°C to +85°C and supports a maximum supply voltage of 5.5 V. Key electrical parameters include a typical operating supply current of 6 µA and a reset delay time of 240 ms. It is housed in a compact SOT-143-4 surface-mount package.

Supervisors Feature Summary

• Provides precise monitoring of standard power supply rails including +2.5 V, +3.0 V, +3.3 V, and +5.0 V.
• Features an active HIGH reset output configuration suitable for systems requiring high-level reset signals.
• Includes a dedicated manual reset input pin allowing external control over the reset state.
• Ensures reliable operation with power supply transient immunity and valid reset down to low voltage levels.

Supervisors Applications

• Computers and server systems
• Laptop and portable equipment
• Wireless communications infrastructure
• Embedded control systems

Supervisors Procurement Notes

Verify component authenticity through authorized distribution channels due to potential availability constraints. Confirm RoHS compliance status via official manufacturer documentation before integration. Check for end-of-life notifications or obsolescence warnings as this series may have limited production runs. Ensure packaging specifications match design requirements for surface-mount assembly processes.

Supervisors Selection Notes

Select this variant when an active HIGH reset signal is required rather than the common active LOW configuration. Verify that the specific threshold voltage matches the target power rail tolerance. Consider the SOT-143 package size for space-constrained PCB layouts. Ensure the manual reset functionality aligns with the system's fault recovery strategy.

Supervisors Part Context

This component belongs to the CAT811/CAT812 family of microprocessor supervisors. These devices serve as direct replacements for legacy MAX811/MAX812 parts in industrial applications. The family offers both active LOW (CAT811) and active HIGH (CAT812) options in identical packages, simplifying design swaps while maintaining compatibility with standard industrial temperature ranges.

Supervisors Replacement Considerations

Direct functional equivalents include the MAX812 series from Maxim Integrated. Cross-reference datasheets to confirm pinout compatibility and threshold voltage tolerances. Verify that alternative suppliers offer the same SOT-143-4 package and manual reset capability.

Supervisors FAQ

What is the reset output polarity of the CAT812LTBI-GT3?

The CAT812LTBI-GT3 provides an active HIGH reset output, which drives the reset line high when the monitored voltage is within specification.

Does this component support manual system resets?

Yes, the device includes a dedicated manual reset input pin that allows users to force a reset condition externally.

What is the minimum operating voltage for valid reset generation?

The reset signal remains valid down to a supply voltage (VCC) of 1.0 V, ensuring supervision during low-power states.