CAT1161LI-30-G

Supervisors Overview

The CAT1161LI-30-G is a single-channel, low-power supervisor circuit manufactured by onsemi. It provides a reset signal with a fixed output delay of 30 milliseconds when the supply voltage drops below its threshold. The device operates within a supply voltage range of 1.25V to 5.5V and features a push-pull active-low output. It includes an internal power-on reset circuit and a manual reset input for system control. The component is available in compact packages such as SOT-23-5 and SC-70-5, designed for space-constrained applications requiring reliable voltage monitoring.

Supervisors Feature Summary

• Provides precise voltage supervision with a fixed 30ms output delay
• Features a manual reset input for external system control
• Includes an internal power-on reset circuit for reliable startup
• Operates with low supply current suitable for battery-powered devices

Supervisors Applications

• Portable electronic devices requiring voltage monitoring
• Microcontroller-based systems needing reliable reset signals
• Battery-operated equipment with low-power constraints
• Embedded systems requiring manual reset functionality

Supervisors Procurement Notes

Verify the specific suffix 'G' indicates lead-free status and RoHS compliance per onsemi standards. Confirm the package type matches the required footprint, as variants exist in SOT-23-5 and SC-70-5. Ensure the operating temperature range meets the application's environmental requirements. Cross-reference the datasheet revision date to confirm the latest electrical characteristics and pinout definitions are applied.

Supervisors Selection Notes

Select this component when a fixed 30ms delay is acceptable for the system reset timing. Consider the input voltage range to ensure compatibility with the target supply rail. Evaluate the need for a manual reset input; if not required, other variants may be more cost-effective. Verify the output drive capability meets the load requirements of the connected microcontroller or logic gate.

Supervisors Part Context

This part belongs to the CAT1161 series of single-supply voltage supervisors. These devices are designed to monitor supply voltages and generate a reset signal when the voltage falls below a predetermined threshold. The series offers various threshold voltages and delay times to suit different application needs. The CAT1161LI-30-G specifically targets applications requiring a 3.0V threshold and a 30ms delay.

Supervisors Replacement Considerations

Direct substitutes include other CAT1161 variants with similar thresholds and delays, such as CAT1161LI-30 without the 'G' suffix if lead-free status is not critical. Alternative manufacturers offer comparable single-channel supervisors with matching 3.0V thresholds and 30ms delays, but verify pinout compatibility and electrical specifications before substitution.