XC6123E746ER-G

Supervisors Overview

The XC6123E746ER-G is a high-precision voltage detector with an integrated watchdog timer manufactured by Torex Semiconductor. It operates within a supply voltage range of 1.0V to 6.0V and features a fixed detection threshold of 4.6V. The device utilizes CMOS technology for low current consumption, with a typical operating current of 12µA and standby current of 5µA. It provides an N-channel open-drain output that goes low upon detection. The watchdog function triggers a reset if the input signal remains constant for a timeout period, typically 100ms. The component is housed in a compact 6-USP (1.8x2mm) package and supports an operating temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Integrates a high-precision voltage detector with a built-in watchdog timer using CMOS process technology
• Features an EN/ENB pin allowing independent control over the watchdog function while maintaining voltage monitoring
• Provides an N-channel open-drain output configuration suitable for direct interfacing with microprocessor reset lines

Supervisors Applications

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

Supervisors Procurement Notes

Verify the specific suffix ER-G corresponds to the 6-USP surface-mount package and tape & reel packaging format. Confirm the detection threshold matches the required system voltage level of 4.6V. Ensure the watchdog timeout characteristics align with the target processor's timing requirements before finalizing procurement specifications.

Supervisors Selection Notes

Select this component when a combined voltage supervision and watchdog function is required in a minimal footprint. The fixed 4.6V threshold suits applications monitoring standard logic or battery levels near this value. The open-drain output allows flexibility in pull-up voltage selection. Consider the 12µA operating current for battery-powered designs where low quiescent drain is critical.

Supervisors Part Context

This part belongs to the XC6121/XC6122/XC6123/XC6124 series of voltage detectors with watchdog functions. The series distinguishes itself through laser-trimmed internal detect voltages ranging from 1.6V to 5.0V in 0.1V increments. The XC6123 variant specifically incorporates the watchdog timer feature alongside the voltage detection capability, offering a consolidated solution for system reliability.

Supervisors FAQ

How is the watchdog function controlled?

The watchdog function can be turned ON or OFF independently via the EN/ENB pin. Setting this pin to a specific logic level disables the watchdog timer while keeping the voltage detector operational.

What happens if the watchdog input signal does not toggle?

If the watchdog input maintains a constant High or Low level within the specified watchdog timeout period, the device outputs a reset signal to trigger a system restart.