CAT803JTBI-GT3

Supervisors Overview

The CAT803JTBI-GT3 is a voltage supervisory circuit from onsemi designed for monitoring power supplies in digital systems. It operates within an industrial temperature range of -40°C to +85°C and supports supply voltages from 1.2 V to 5.5 V. The device features an active low, open-drain reset output and provides precision monitoring for standard voltage levels including 2.5 V, 3.0 V, 3.3 V, and 5.0 V. It has a typical quiescent current of 6 µA and ensures reset validity down to VCC = 1.0 V.

Supervisors Feature Summary

• Provides precision monitoring for standard power supply voltages
• Features an active low open-drain reset output configuration
• Ensures reset signal validity at supply voltages as low as 1.0 V

Supervisors Applications

• Computers and servers
• Wireless communications equipment
• Embedded control systems
• Intelligent instruments

Supervisors Procurement Notes

Verify the specific threshold voltage suffix (e.g., J for 3.0V) against design requirements. Confirm package type SOT-23 compatibility. Check RoHS compliance status. Validate operating temperature range suitability. Ensure pull-up resistor is included in external circuit design.

Supervisors Selection Notes

Select this component for applications requiring an open-drain output interface. Compare with CAT809 if push-pull output is needed. Verify threshold voltage matches the target rail. Consider SC-70 package variant if space is limited. Ensure input voltage stays within 1.2 V to 5.5 V limits.

Supervisors Part Context

Part of the CAT803/CAT809/CAT810 family of microprocessor power supply supervisors. Direct replacement for MAX803 series devices in industrial temperature applications. Utilizes floating gate technology for precise threshold accuracy. Available in compact surface-mount packages for space-constrained designs.

Supervisors Replacement Considerations

MAX803 series components are direct functional replacements. Verify output configuration matches system requirements. Check threshold voltage tolerance alignment. Ensure package footprint compatibility for PCB re-design.