CAT812JTBI-T3

Supervisors Overview

The CAT812JTBI-T3 is a voltage supervisory circuit manufactured by onsemi, designed for monitoring single power supply rails. It operates within a supply voltage range of 1.2 V to 5.5 V and features a push-pull output configuration. The device includes an active high reset signal with a fixed delay time of 20 microseconds. It draws a typical operating supply current of 6 µA and supports an overvoltage threshold of 4 V. The component is housed in a SOT-143-4 surface-mount package and is rated for operation across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Provides active high reset assertion upon detection of undervoltage conditions relative to the monitored rail.
• Integrates a fixed 20 microsecond reset delay timer to ensure stable system initialization.
• Features low quiescent current consumption suitable for battery-powered or energy-efficient designs.

Supervisors Applications

• Monitoring main logic supply voltages in embedded systems
• Supervisory control for portable electronic devices
• Power integrity verification in industrial control modules

Supervisors Procurement Notes

Verify the specific suffix designation against official documentation, as variations may exist between distributor listings and manufacturer specifications. Confirm that the requested part matches the exact electrical parameters and package type required for the design. Check current availability status, as lifecycle changes may affect long-term sourcing options. Ensure compliance with relevant environmental standards if applicable to the target market.

Supervisors Selection Notes

Select this component when an active high reset signal is required rather than the more common active low configuration. Consider the 20 µs delay duration against system startup timing requirements. Evaluate the 6 µA standby current against total power budget constraints. Verify that the 4 V overvoltage threshold aligns with the maximum allowable input voltage of the protected circuitry.

Supervisors Part Context

This part belongs to the CAT812 series of voltage supervisors from onsemi. These devices are engineered for reliable power management in compact electronics. The series offers various threshold options and output polarities to suit different architectural needs. The SOT-143-4 package allows for space-constrained PCB layouts while maintaining robust thermal performance.

Supervisors Replacement Considerations

Direct substitutes within the same family include variants with different reset delays or thresholds, such as the CAT812L or CAT812X series. Cross-reference pinout compatibility before substitution. Verify that alternative parts maintain the same active high output polarity and push-pull drive capability.