CAT803MTBI-T3

Supervisors Overview

The CAT803MTBI-T3 is a microprocessor power supervisor manufactured by onsemi, designed to monitor voltage levels in embedded systems. It operates within a supply voltage range of 1.2 V to 5.5 V and supports fixed reset threshold voltages including 2.5 V, 3 V, 3.3 V, and 5 V. The device features an active low, open-drain output and lacks manual reset functionality. Packaged in a compact SOT-23-3 surface-mount case, it functions as a single-channel voltage supervisory circuit suitable for applications requiring reliable power monitoring.

Supervisors Feature Summary

• Provides active low open-drain reset signal generation based on monitored input voltage
• Supports multiple fixed threshold voltage options for diverse system requirements
• Operates reliably across extended industrial temperature ranges

Supervisors Applications

• Microprocessor power supply monitoring
• Embedded system voltage supervision
• Portable electronic device power management

Supervisors Procurement Notes

Verify the specific reset threshold voltage variant required for your design, as the CAT803 series offers multiple fixed options (e.g., 2.5V, 3V, 3.3V, 5V). Confirm that the SOT-23-3 package dimensions align with your PCB footprint constraints. Ensure compatibility with your system's operating voltage range of 1.2V to 5.5V before finalizing procurement specifications.

Supervisors Selection Notes

Select this component when a simple, cost-effective voltage supervisor with an open-drain output is needed. The absence of a manual reset pin simplifies circuit design if external reset control is not required. Consider the available threshold voltages to ensure proper triggering relative to your system's nominal supply rail. The SOT-23-3 package is ideal for space-constrained designs.

Supervisors Part Context

This part belongs to the CAT803 family of voltage supervisors from onsemi. These devices are engineered for general-purpose power monitoring in digital circuits. The family typically includes variants with different fixed threshold voltages to accommodate various logic families and supply rails, all sharing the same basic functional architecture and compact packaging.

Supervisors Replacement Considerations

Direct substitutes may include other CAT803 variants with different threshold voltages or similar single-channel supervisors from other manufacturers offering open-drain outputs in SOT-23 packages. Verify electrical parameters such as reset delay and operating voltage range before substitution.