CAT1320YI-25-GT3

Supervisors Overview

The CAT1320YI-25-GT3 is a voltage supervisory circuit manufactured by onsemi, designed for CPU monitoring applications. It features a single monitored input and provides manual reset functionality without an integrated watchdog timer. The device operates within a supply voltage range of 3 V to 5.5 V and supports surface-mount installation in a TSSOP-8 package. Key electrical parameters include a threshold voltage of 2.5 V, an overvoltage threshold of 2.7 V, and an undervoltage threshold ranging from 2.55 V to 2.7 V. The reset delay time is specified at 5 µs, with power dissipation rated at 1 W. Operating currents vary between 1 mA and 3 mA depending on conditions. The component functions reliably across a temperature range of -40 °C to +85 °C.

Supervisors Feature Summary

• Integrates CPU supervision with built-in 32K EEPROM storage capabilities
• Provides manual reset control with open collector/drain output configuration
• Monitors a single input line for voltage stability

Supervisors Applications

• CPU voltage supervision systems
• Embedded controller reset circuits
• Power management monitoring units

Supervisors Procurement Notes

Verify the specific revision status as this component is listed as End-of-Life (EOL). Confirm availability through authorized distributors or secondary markets if immediate procurement is required. Ensure that the TSSOP-8 package dimensions match the target PCB footprint. Check RoHS compliance documentation for environmental regulatory adherence before finalizing orders.

Supervisors Selection Notes

Select this component when a combined supervisory circuit and non-volatile memory solution is required for low-pin-count designs. The TSSOP-8 package offers a compact form factor suitable for space-constrained boards. Consider the manual reset requirement and absence of a watchdog timer during system architecture planning. Verify that the 3 V to 5.5 V operating range aligns with the target system's power rails.

Supervisors Part Context

This part belongs to the CAT1320 series of supervisory circuits from onsemi. It combines voltage monitoring with embedded EEPROM, distinguishing it from standard reset controllers. The series targets applications needing both system integrity checks and small data storage in a minimal footprint.

Supervisors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.