XC6123F642MR-G

Supervisors Overview

The XC6123F642MR-G is a high-precision voltage detector with a watchdog timer, manufactured by Torex Semiconductor using CMOS technology. It monitors a single input voltage with a threshold of 4.2 V and operates within a supply range of 1.0 V to 6.0 V. The device features an active-low open-drain output and includes a built-in delay circuit for release timing. Key electrical parameters include a typical reset timeout of 1.6 s, a power consumption current of 12 uA, and a static current of 5 uA. It functions reliably across an operating temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Integrates a watchdog timer function with selectable timeout periods for system stability monitoring.
• Provides precise voltage detection with laser-trimmed thresholds to ensure accurate supervision.
• Features an EN/ENB pin that allows independent control over the watchdog function while maintaining voltage detection.
• Utilizes a low-current CMOS process to minimize power consumption in battery-operated applications.

Supervisors Applications

• Microprocessor watchdog circuits for preventing software hangs
• Memory backup switching systems
• Power failure detection logic
• System reset generation during power-up or brown-out events

Supervisors Procurement Notes

Verify the specific suffix codes against the official datasheet to confirm the exact threshold voltage and package variant. Ensure compatibility with the target PCB footprint, specifically the SOT-25-5 configuration. Confirm RoHS compliance status if required by regulatory standards. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Validate that the selected revision matches the intended application requirements.

Supervisors Selection Notes

Select this component when a dedicated voltage supervisor with integrated watchdog functionality is required. The 4.2 V threshold suits applications monitoring higher voltage rails. Consider the 1.6 s timeout period for systems requiring longer watchdog intervals. The low quiescent current makes it suitable for energy-efficient designs. Verify that the open-drain output interface aligns with the downstream logic levels.

Supervisors Part Context

This part belongs to the XC6123 series, which groups voltage detectors with watchdog timers. The series shares common architectural features such as the CMOS process and internal delay circuits. Variations within the series differ primarily in threshold voltage settings and specific timing configurations. This model represents a specific configuration within the broader family of supervisory ICs offered by Torex Semiconductor.

Supervisors Replacement Considerations

Direct substitutes may include other XC6123 variants with different threshold voltages if the 4.2 V setting is not critical. Check for functional equivalents from other manufacturers offering similar watchdog supervisors in SOT-25 packages. Ensure any replacement maintains the same output type and operating temperature range.

Supervisors FAQ

Can the watchdog function be disabled independently?

Yes, the EN/ENB pin allows the watchdog function to be turned off while the voltage detector remains operational.

What is the output state when the monitored voltage is below the threshold?

The output goes low (VDFL) when the detected voltage falls below the threshold level.