ADM6321BZ25ARJZ-R7

Supervisors Overview

The ADM6321BZ25ARJZ-R7 is a single-channel supervisory circuit manufactured by Analog Devices Inc. It operates within a supply voltage range of 1 V to 5.5 V and features a fixed reset threshold voltage of 2.5 V. The device provides a watchdog timer function with a typical timeout of 102 ms and includes an open-drain active-low reset output. It is housed in a 5-lead SOT-23 package and is specified for operation over the industrial temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Integrated watchdog timer with manual input capability
• Open-drain active-low reset output stage
• Low power consumption suitable for battery-operated systems

Supervisors Applications

• Microprocessor system supervision
• Battery-powered portable devices
• Embedded controller reset management

Supervisors Procurement Notes

Verify the specific suffix 'RJZ' against the manufacturer's current datasheet to confirm pinout and electrical characteristics, as suffixes often denote tape-and-reel packaging or specific manufacturing lot codes rather than functional changes. Ensure compatibility with the target PCB footprint and reflow soldering profile requirements for the SOT-23-5 package.

Supervisors Selection Notes

Select this component when a fixed 2.5 V reset threshold is required for monitoring low-voltage rails. The inclusion of a watchdog timer distinguishes it from basic supervisors. Verify that the open-drain output configuration aligns with the pull-up resistor requirements of the connected microcontroller or logic interface.

Supervisors Part Context

This part belongs to the ADM6321 series of supervisory circuits designed for compact applications. The series offers various threshold voltages and timeout options within the same small 5-lead SOT-23 package, allowing designers to standardize on a single footprint while adjusting voltage monitoring parameters through different model suffixes.

Supervisors Replacement Considerations

Cross-reference with other ADM6321 variants having different threshold voltages if the 2.5 V setting is not optimal. Check for direct pin-compatible alternatives from Analog Devices such as the ADM6316 or ADM6320 series, ensuring the replacement supports the required watchdog functionality and output type.