CAT809SSDI-T3

Supervisors Overview

The CAT809SSDI-T3 is a microprocessor power supply supervisor manufactured by onsemi, designed for voltage monitoring applications. It operates within a supply voltage range of 1.2 V to 5.5 V and features a reset threshold voltage of 4 V. The device utilizes a push-pull output configuration with a reset delay time of 240 ms. It is housed in an SC-70-3 surface-mount package and supports an operating temperature range from -40 °C to +85 °C. The component draws a typical operating current of 8 µA and includes no manual reset, watchdog timer, or battery backup switch functionality.

Supervisors Feature Summary

• Provides voltage supervision for microprocessor power supplies with a dedicated reset output
• Features a low-power design suitable for battery-operated systems
• Delivers a stable reset signal via a push-pull output interface

Supervisors Applications

• Microprocessor power-on reset circuits
• Voltage monitoring in portable electronic devices
• Embedded system power management

Supervisors Procurement Notes

Verify the specific revision level and RoHS compliance status directly with the manufacturer or authorized distributors before procurement. Confirm that the SC-70-3 package dimensions align with your PCB footprint requirements. Ensure the 4 V threshold voltage meets the target system's logic levels. Check for any obsolescence notices or lifecycle changes associated with this part number.

Supervisors Selection Notes

Select this component when a fixed 4 V threshold is required for supervising 3.3 V or similar logic rails. The SC-70-3 package offers space efficiency for compact designs. Consider the 240 ms reset delay to ensure adequate stabilization time for the monitored circuit. Verify that the 5.5 V maximum input rating accommodates potential voltage transients in the application environment.

Supervisors Part Context

This part belongs to the CAT809 series of voltage supervisors from onsemi. The series provides various threshold options and package types to suit different monitoring needs. The CAT809SSDI-T3 specifically targets applications requiring a 4 V reset point in a small form factor. It serves as a fundamental building block for ensuring reliable operation of digital logic circuits under varying power conditions.

Supervisors Replacement Considerations

Cross-reference with other CAT809 variants such as CAT809JSDI-T3 (4 V) or CAT809ZSDI-T3 (2.32 V) if threshold adjustments are needed. Verify pinout compatibility when substituting with equivalent parts from other manufacturers. Ensure that replacement components maintain the same SC-70-3 package and electrical characteristics.