XC6122E640ER-G

Supervisors Overview

The XC6122E640ER-G is a high-precision voltage detector with an integrated watchdog timer and ON/OFF control, manufactured by Torex Semiconductor. It utilizes CMOS process technology to provide low current consumption within an operating voltage range of 1.6V to 5.0V. The device features a fixed detect voltage threshold of 4.0V, determined by laser trimming technology. It includes a built-in delay circuit that eliminates the need for external components to generate release delay signals. The output configuration is an N-channel open drain, which goes low when the detected voltage falls below the threshold. The watchdog function monitors input signals and outputs a reset signal if the input remains at a constant logic level for a specific timeout period.

Supervisors Feature Summary

• Integrates a watchdog timer function that triggers a reset signal if the watchdog input maintains a constant high or low state beyond the specified timeout period.
• Features an EN/ENB pin that allows independent control over the watchdog function, enabling it to be disabled while the voltage detection circuit remains active.
• Utilizes internal laser trimming to set precise detect voltage thresholds in increments across the operational range without requiring external resistors.
• Incorporates a built-in delay circuit to manage release delay times, removing the necessity for external timing components.

Supervisors Applications

• Microprocessor watchdog monitoring and reset circuits
• Memory battery backup circuits
• System power-on reset circuits
• Power failure detection

Supervisors Procurement Notes

Verify the specific suffix codes against the official Torex datasheet to confirm the exact detect voltage and watchdog timeout settings. Ensure the package type matches the required PCB footprint. Confirm RoHS compliance status if required by your manufacturing standards. Cross-reference the manufacturer part number with authorized distributors to ensure authenticity and traceability.

Supervisors Selection Notes

Select this component when a fixed 4.0V threshold is required alongside watchdog functionality. Verify that the N-channel open drain output is compatible with the downstream logic levels. Check that the operating temperature range meets the environmental requirements of the target application. Consider the low current consumption benefits for battery-powered systems.

Supervisors Part Context

This part belongs to the XC6121/XC6122/XC6123/XC6124 series of voltage detectors. The XC6122 variant specifically features an internally pulled-up EN/ENB pin, allowing the watchdog function to be enabled by leaving the pin open. This series is designed for applications requiring high precision and low power consumption in compact surface-mount packages.

Supervisors Replacement Considerations

Check for other XC6122 variants with different detect voltages or timeout periods if the 4.0V threshold is not suitable. Ensure any substitute maintains the same 6-USP package and open-drain output configuration. Verify compatibility with the system's voltage range and temperature specifications before substitution.