XC6121D546MR-G

Supervisors Overview

The XC6121D546MR-G is a high-precision voltage monitor from Torex Semiconductor, housed in an SOT-25-5 package. It features a fixed detection threshold of 5.4 V and operates within a supply voltage range of 1 V to 6 V. The device incorporates a watchdog timer with selectable timeout periods ranging from 50 ms to 1.6 s. It utilizes CMOS output drivers with open-drain configuration and includes a dedicated EN/ENB pin for controlling the watchdog function independently of the voltage detector operation.

Supervisors Feature Summary

• Integrated watchdog timer with multiple selectable timeout durations
• Independent control of watchdog function via EN/ENB pin
• High-precision internal reference voltage using laser trimming
• Low current consumption suitable for battery-powered systems

Supervisors Applications

• Microprocessor system reset circuits
• Memory battery backup monitoring
• Power failure detection systems
• Watchdog monitoring for embedded controllers

Supervisors Procurement Notes

Verify the specific suffix codes against the official datasheet to confirm the exact threshold voltage and release delay time. Ensure the EN/ENB pin handling matches the design requirements, as this series allows independent control of the watchdog function. Confirm RoHS compliance status and packaging options such as reel or cut tape availability directly with authorized distributors.

Supervisors Selection Notes

Select this component when a fixed 5.4 V threshold is required for system supervision. Consider the available watchdog timeout options if software-based timing is insufficient. Verify that the open-drain output interface is compatible with the target microprocessor's input logic levels. Check the operating temperature range to ensure suitability for the intended environmental conditions.

Supervisors Part Context

This part belongs to the XC6121 series of voltage detectors with watchdog functions. The series uses CMOS process technology to achieve low power consumption and high accuracy. The XC6121 variant specifically supports manual reset functionality, distinguishing it from other series members. The device integrates a reference voltage source, delay circuit, comparator, and output driver into a single compact package.

Supervisors Replacement Considerations

Cross-reference with other XC6121 series parts for different threshold voltages. Verify compatibility with XC6122 or XC6124 series if the EN/ENB pin pull-up/pull-down characteristics differ. Ensure any substitute maintains the same SOT-25-5 footprint and electrical specifications.