CAT812LTBI-T

Supervisors Overview

The CAT812LTBI-T is a 4-pin microprocessor power supply supervisor manufactured by onsemi. It monitors a single voltage rail and provides a push-pull reset output. The device operates within a supply voltage range of 1.2 V to 5.5 V, with a typical operating current of 6 uA. It features a fixed overvoltage threshold of 4 V and a reset delay time of 20 us. The component supports manual reset functionality and lacks a watchdog timer or battery backup switch. It is housed in an SOT-143-4 package and functions across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Provides active high reset signal via push-pull output for reliable logic interfacing
• Includes manual reset capability allowing external control of the reset state
• Designed for low-power applications with minimal quiescent current consumption

Supervisors Applications

• Microprocessor power supply monitoring
• Single voltage rail supervision in embedded systems
• Portable electronic devices requiring low standby current

Supervisors Procurement Notes

Verify the specific suffix LTBI against the manufacturer's latest datasheet to confirm pinout and electrical characteristics. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability may vary. Ensure the SOT-143-4 package matches your PCB footprint requirements before ordering.

Supervisors Selection Notes

Select this component when a fixed overvoltage threshold near 4 V is required for system protection. The manual reset feature distinguishes it from auto-reset variants. Consider the 6 uA operating current for battery-sensitive designs. Verify that the push-pull output drive capability meets the input requirements of the downstream logic circuitry.

Supervisors Part Context

This part belongs to the CAT812 series of 4-pin microprocessor power supply supervisors. The series offers various threshold voltages and reset delays to suit different voltage rails. The CAT812LTBI-T specifically targets applications needing overvoltage detection with manual intervention capabilities.

Supervisors Replacement Considerations

Check for CAT812 variants with similar thresholds and packages. Verify if alternative manufacturers offer compatible supervisors with identical pinouts and electrical specs. Ensure any substitute maintains the manual reset function and push-pull output type.