ADM8324WCA46ARJZR7

Supervisors Overview

The ADM8324WCA46ARJZR7 is a supervisory circuit manufactured by Analog Devices Inc., designed for monitoring single voltage inputs in automotive and industrial applications. It features a fixed reset threshold of 4.63 V with an accuracy of 2.5%. The device includes a built-in watchdog timer with a fast timeout of 1.5 ms maximum and a manual reset input. It operates within a supply voltage range up to 5.5 V and provides an open-drain output. The component supports a minimum reset timeout of 140 ms and functions across an extended temperature range from -40°C to +125°C.

Supervisors Feature Summary

• Integrated windowed watchdog timer with fast timeout capability for system fault detection
• Manual reset input allows external control over the reset state
• Automotive-grade reliability with extended operating temperature range
• Open-drain output configuration for flexible interfacing

Supervisors Applications

• Automotive electronic control units requiring power supervision
• Industrial systems needing watchdog protection against software hangs
• Portable devices utilizing low-power voltage monitoring
• Embedded systems with manual reset requirements

Supervisors Procurement Notes

Verify the complete part number including suffixes such as ARJZR7, as these indicate specific packaging and tape-and-reel configurations. Confirm that the 4.63 V threshold matches the target application voltage. Check for RoHS compliance status if required by regional regulations. Ensure the SOT-23-5 package fits the PCB layout constraints. Validate that the open-drain output type aligns with the downstream logic levels.

Supervisors Selection Notes

Select this component when a fixed 4.63 V threshold is required for single-supply monitoring. The inclusion of a manual reset input distinguishes it from variants lacking this feature. The extended temperature range makes it suitable for harsh environments compared to commercial-grade parts. Consider the open-drain output requirement for pull-up resistor design. Verify that the watchdog fast timeout meets the system's fault recovery timing needs.

Supervisors Part Context

This part belongs to the ADM8324 series of supervisory circuits from Analog Devices. The series offers various threshold voltages and package options. The WCA suffix indicates automotive grade and specific threshold characteristics. The ARJZR7 suffix denotes the SOT-23-5 package and reel packaging. Other variants in the family may differ in threshold voltage, temperature range, or presence of manual reset functionality.

Supervisors Replacement Considerations

• ADM8324WCA29ARJZR7
• ADM8324WCC46ARJZR7

Supervisors FAQ

What is the function of the manual reset input?

The manual reset input allows an external signal to force the supervisor into a reset state, providing user control over the system reset condition.

Does this device include a watchdog timer?

Yes, the ADM8324WCA46ARJZR7 includes a built-in windowed watchdog timer with a fast timeout specification of 1.5 ms maximum.

What is the operating temperature range?

The device operates within an extended temperature range of -40°C to +125°C (TA), suitable for automotive and industrial applications.