CAT810JTBI-T3

Supervisors Overview

The CAT810JTBI-T3 is a microprocessor power supply supervisor from onsemi, designed to monitor voltage levels in digital systems. It features a push-pull active high reset output and operates within a supply voltage range of 1.2 V to 5.5 V. The device monitors a single input with a threshold voltage of 4 V (under-voltage: 3.93 V, over-voltage: 4.06 V). It provides a fixed reset delay time of 240 ms and consumes only 8 µA of operating current. Packaged in a compact SOT-23-3 surface-mount case, it functions reliably across an industrial temperature range of -40 °C to +85 °C.

Supervisors Feature Summary

• Push-pull active high reset output configuration for direct logic interfacing
• Ultra-low quiescent current consumption of 8 µA for power efficiency
• Compact 3-pin SOT-23 package suitable for space-constrained designs
• Robust operation down to 1.0 V with fast transient immunity

Supervisors Applications

• Monitoring +5.0 V power supplies with tolerance variations
• Digital system power supervision requiring active high reset signals
• Portable electronics utilizing low voltage thresholds
• Industrial control systems operating in extended temperature ranges

Supervisors Procurement Notes

Verify the specific suffix 'T3' confirms the reel packaging format if required by assembly equipment. Confirm RoHS compliance status through official documentation as specifications may vary by production batch. Ensure the active high output aligns with the target microprocessor reset requirements. Check for obsolescence notices or lifecycle changes directly from onsemi before finalizing procurement plans.

Supervisors Selection Notes

Select this component when an active high reset signal is mandatory, distinguishing it from the CAT809 which offers active low outputs. The 4 V threshold makes it suitable for monitoring rails slightly above standard 3.3 V systems or specific battery applications. Consider the SOT-23-3 footprint constraints against available board space. Verify that the 240 ms delay meets the startup timing requirements of the connected digital logic.

Supervisors Part Context

Part of the CAT810 series of supervisory circuits from onsemi, designed as direct replacements for legacy MAX810 devices. The series utilizes floating gate Analog EEPROM technology to provide precise threshold accuracy. This family supports various industry-standard voltage levels and output configurations to accommodate diverse digital system architectures.

Supervisors Replacement Considerations

CAT810RSDI-T3 serves as a pin-compatible alternative with a different threshold voltage (2.63 V) and SC-70 package. CAT809 variants offer similar functionality but with active low outputs. Verify threshold voltage compatibility when substituting to ensure proper reset assertion relative to the monitored rail.