CAT1320YI-42-GT3

Supervisors Overview

The CAT1320YI-42-GT3 is a voltage supervisory circuit manufactured by onsemi, designed for CPU support applications. It integrates a 32K CMOS EEPROM with serial I/O capabilities. The device operates within a supply voltage range of 3 V to 5.5 V and features an undervoltage threshold between 4.25 V and 4.5 V. It utilizes a TSSOP-8 surface-mount package and supports manual reset functionality without an integrated watchdog timer. The component provides an open collector/drain output type and maintains a reset delay time of 5 µs. Operating temperatures span from -40 °C to +85 °C, with power dissipation rated at 1 W.

Supervisors Feature Summary

• Integrates 32K CMOS EEPROM with serial interface for data storage alongside supervision
• Provides manual reset capability with open collector/drain output configuration
• Operates across extended industrial temperature ranges

Supervisors Applications

• CPU power supply monitoring systems
• Embedded controller data retention circuits
• Industrial control board supervision

Supervisors Procurement Notes

Verify current availability status as the component may be subject to end-of-life restrictions or limited distribution channels. Confirm package integrity and RoHS compliance documentation prior to integration. Cross-reference manufacturer part numbers against authorized distributor catalogs to ensure authenticity. Validate that the specific suffix matches design requirements for voltage thresholds and memory capacity.

Supervisors Selection Notes

Select this component when simultaneous voltage supervision and non-volatile data storage are required in a compact surface-mount form factor. Ensure the 3 V to 5.5 V operating range aligns with system power rails. Verify that the absence of a watchdog timer meets safety requirements. Compare against CAT1320 variants with different memory sizes or packages if pinout compatibility is critical.

Supervisors Part Context

This part belongs to the CAT1320 series of supervisory circuits combining voltage monitoring with embedded EEPROM. It serves as a specialized PMIC solution for microprocessor systems requiring both reset generation and persistent storage. The series offers various memory capacities and package options to suit different PCB layout constraints and application densities.

Supervisors Replacement Considerations

Check for direct substitutes within the CAT1320 family offering identical 32K EEPROM capacity and 4.2 V threshold. Verify pin-compatible alternatives in TSSOP-8 packages from onsemi or other manufacturers. Ensure replacement parts maintain the same manual reset and open-drain output characteristics.