CAT810RSDI-GT3

Supervisors Overview

The CAT810RSDI-GT3 is a voltage supervisory circuit manufactured by onsemi, designed to monitor power supplies in digital systems. It operates within a supply voltage range of 1.2 V to 5.5 V and features a threshold voltage of 2.63 V. The device provides an active high, push-pull reset output with a fixed delay time of 240 ms. Packaged in a compact SC-70-3 (SOT-323) surface-mount format, it supports industrial temperature operations from -40°C to +85°C. The component consumes a typical operating current of 6 µA and lacks manual reset or watchdog timer functions.

Supervisors Feature Summary

• Generates a reset signal asserted while the monitored supply voltage remains below the preset threshold level
• Maintains correct output state at supply levels as low as 1.0 V while ignoring fast transients
• Provides a push-pull active high reset output configuration without requiring external pull-up resistors

Supervisors Applications

• Monitoring power supplies for +2.5 V digital systems
• Microprocessor power supply supervision in industrial environments
• Battery-powered devices requiring low quiescent current monitoring

Supervisors Procurement Notes

Verify component authenticity through authorized onsemi distributors due to obsolete status. Confirm package integrity upon receipt, as SC-70-3 components are sensitive to moisture and physical damage. Ensure design compatibility with existing PCB footprints before finalizing procurement plans given the discontinuation notice.

Supervisors Selection Notes

Select this part when an active high push-pull output is required for direct logic interfacing. Compare against CAT810JTBI-GT3 if a higher 4 V threshold is needed. Consider CAT810RSDI-GT3 only if the specific 2.63 V threshold aligns with the target system voltage requirements and space constraints favor the SC-70-3 package over SOT-23 alternatives.

Supervisors Part Context

This component belongs to the CAT810 series of microprocessor power supply supervisors. It serves as a direct replacement for legacy MAX810 devices in applications operating over the industrial temperature range. The series utilizes floating gate technology to provide precise monitoring thresholds for standard voltage rails including +5.0 V, +3.3 V, +3.0 V, and +2.5 V systems.

Supervisors Replacement Considerations

Direct replacements include MAX810 variants for compatible voltage thresholds. Verify pinout compatibility between SC-70-3 packages when substituting with other manufacturers' equivalents. Check threshold voltage tolerances to ensure proper reset assertion timing relative to the target power rail stability.