CAT1320WI-45-GT3

Supervisors Overview

The CAT1320WI-45-GT3 is a single-channel voltage supervisor IC manufactured by onsemi, designed for monitoring power supply integrity in electronic systems. It operates within a supply voltage range of 1.8 V to 5.5 V and features a fixed threshold voltage of 4.5 V, ensuring precise reset generation when input levels deviate from this set point. The device utilizes an open-drain or open-collector output configuration, allowing flexible interfacing with various logic families through external pull-up resistors. Packaged in an 8-SOIC surface-mount format, it supports industrial temperature ranges and includes internal delay mechanisms to prevent false triggering during transient events.

Supervisors Feature Summary

• Provides reliable power-on reset and manual reset functionality for system stability
• Features a fixed 4.5 V threshold voltage for consistent supervision performance
• Offers flexible output interface via open-drain/open-collector configuration

Supervisors Applications

• Microcontroller and microprocessor power supply monitoring
• Battery-powered devices requiring low-voltage detection
• Industrial control systems needing robust reset signals
• Consumer electronics with strict power sequencing requirements

Supervisors Procurement Notes

Verify the specific suffix '45' confirms the 4.5 V threshold variant, as other thresholds exist in the family. Confirm RoHS compliance status and lead-free manufacturing details through official datasheets. Ensure the SOIC-8 package dimensions match your PCB footprint constraints. Check for any recent product change notices that might affect pinout or electrical characteristics before finalizing procurement.

Supervisors Selection Notes

Select this component when a fixed 4.5 V reset threshold is required without adjustable potentiometers. Consider the open-drain output if level shifting between different voltage domains is necessary. Evaluate the operating temperature range against your environmental conditions. Compare propagation delays and reset pulse widths with system timing requirements to ensure adequate hold times are met during power transitions.

Supervisors Part Context

This part belongs to the CAT1320 series of simple supervisors from onsemi, which provides basic reset functions for digital circuits. The series offers various threshold voltages and package options to suit different design needs. As a dedicated supervisor IC, it simplifies power management by handling reset signal generation autonomously, reducing component count compared to discrete solutions.

Supervisors Replacement Considerations

Direct substitutes include other CAT1320 variants with identical 4.5 V thresholds but different packages or suffixes. Cross-reference with similar single-channel supervisors from other manufacturers, ensuring matching threshold voltage, output type, and package dimensions. Verify functional compatibility regarding reset delay times and minimum pulse widths before substitution.