CAT705ZI-GT3

Supervisors Overview

The CAT705ZI-GT3 is a microprocessor supervisory circuit manufactured by onsemi, designed to monitor system voltage and maintain a reset output until the voltage reaches the specified trip value. It features a watchdog timer with a 1.6-second timeout period and guarantees valid reset for VCC as low as 1.0 V. The device operates within an ambient temperature range of -40°C to +85°C and consumes only 6µA of supply current. It provides a 200ms reset pulse width and includes secondary low supply monitoring on the PFI input. The component is housed in an SOIC-8 package and is RoHS compliant.

Supervisors Feature Summary

• Integrated watchdog timer function with 1.6s timeout for system signal monitoring
• Guaranteed valid reset operation down to 1.0 V VCC
• Low power consumption with 6µA supply current
• Secondary low supply monitoring capability via PFI input

Supervisors Applications

• Microprocessor and microcontroller based systems
• Instrument and control systems
• Portable equipment

Supervisors Procurement Notes

Verify end-of-life status before design finalization, as this component may be obsolete or subject to discontinuation. Confirm package availability and lead times with authorized distributors. Ensure the specific ZI suffix matches the required threshold voltage for your application. Check for alternative sources if production volume requires long-term supply assurance.

Supervisors Selection Notes

Select this part when a reliable supervisor with integrated watchdog functionality is needed for low-voltage systems. It is suitable for designs requiring brownout detection in 3.0V, 3.6V, and 5.0V systems. Consider its pin compatibility with MAX705/MAX705/MAX813L products if migrating from legacy designs. Evaluate the 6µA quiescent current against battery life requirements for portable applications.

Supervisors Part Context

This component belongs to the CAT705/CAT706/CAT813 family of supervisory circuits from onsemi (formerly Catalyst Semiconductor). These devices are engineered to provide reset and monitoring functions for electronic systems. The family ensures system stability by maintaining reset outputs until power supplies stabilize, addressing common issues in embedded and industrial electronics.

Supervisors Replacement Considerations

The datasheet indicates pin and function compatibility with MAX705, MAX706, and MAX813L products from other manufacturers. Verify electrical parameters such as trip voltages and reset pulse widths match exactly before substitution. Cross-reference package dimensions and thermal characteristics to ensure mechanical fit.