XC6124C749ER-G

Supervisors Overview

The XC6124C749ER-G is a high-precision voltage detector with an integrated watchdog timer manufactured by Torex Semiconductor. It operates within a supply voltage range of 1.0 V to 6.0 V and features a fixed detection threshold of 4.9 V. The device utilizes laser trimming technology for accuracy and includes a built-in delay circuit that eliminates the need for external components. It provides six selectable watchdog timeout periods ranging from 50 ms to 1.6 s and five release delay times from 3.13 ms to 400 ms. The output driver is an N-channel open drain type, and the unit is housed in a compact 6-USPC (1.8x2 mm) package.

Supervisors Feature Summary

• Integrates a watchdog timer function with selectable timeout periods to monitor microprocessor activity.
• Features an EN/ENB pin that allows independent control over the watchdog function while maintaining voltage detection.
• Utilizes CMOS process technology to achieve low current consumption suitable for battery-powered applications.

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 ER-G corresponds to the 6-USPC surface-mount package configuration. Confirm the detection voltage code matches the required 4.9 V threshold for the target application. Ensure compatibility with the specified operating temperature range of -40°C to +85°C. Cross-reference the manufacturer part number against official distributor catalogs to confirm availability and lead times prior to ordering.

Supervisors Selection Notes

Select this component when a combined voltage supervisor and watchdog timer is required in a minimal footprint. The fixed 4.9 V threshold suits systems requiring supervision near standard logic levels. The open-drain output facilitates interfacing with various logic families. Consider the internal pull-up/pull-down options on the control pin if the EN/ENB pin is left unconnected in the design.

Supervisors Part Context

This part belongs to the XC6121/XC6122/XC6123/XC6124 series of voltage detectors. The series is characterized by high precision and low power consumption. The XC6124 variant specifically incorporates the watchdog timer functionality alongside the voltage monitoring capabilities, distinguishing it from basic voltage detectors in the same family.

Supervisors Replacement Considerations

XC6124C749MR-G: Alternative version utilizing the SOT-25-5 package instead of the 6-USPC form factor while maintaining identical electrical specifications and functionality.