ADM708RAR-REEL

Supervisors Overview

The ADM708RAR-REEL is a voltage supervisory circuit manufactured by Analog Devices Inc., designed to monitor a single power supply rail. It features a typical reset threshold voltage of 2.93V, with an operating range from 1V to 5.5V. The device provides active high and active low push-pull outputs, ensuring compatibility with various logic families. It includes a manual reset input for system control and lacks a watchdog timer or battery backup switch. The component operates within an industrial temperature range of -40°C to +85°C and is housed in an 8-SOIC package.

Supervisors Feature Summary

• Dual-output configuration providing both active high and active low signals for flexible logic interfacing
• Integrated manual reset input allows for external system control and forced reset generation
• Power fail detection capability ensures monitoring of voltage drops below the specified threshold

Supervisors Applications

• Microprocessor system supervision
• Portable equipment power management
• Battery-powered instrument monitoring

Supervisors Procurement Notes

Verify the specific suffix REEL indicates tape-and-reel packaging rather than tube distribution. Confirm RoHS compliance status as historical data varies by production batch. Check current lifecycle status, as older ADM708 variants may be subject to discontinuation notices. Ensure the 2.93V threshold matches the application requirement, as other variants offer different thresholds.

Supervisors Selection Notes

Select this variant when a fixed 2.93V threshold is required for 3.3V or similar nominal supply systems. The dual active output drivers simplify interface design without requiring external pull-ups. Consider the 280ms reset delay for applications requiring stable power before initialization. Verify that the absence of a watchdog timer aligns with the system's error handling strategy.

Supervisors Part Context

The ADM708 series belongs to Analog Devices' family of simple reset circuits, offering cost-effective supervision for microprocessors and memory devices. Unlike complex supervisors, these parts focus on basic voltage monitoring with minimal external components. The RAR-REEL designation specifies the SOIC-8 surface-mount package and reel packaging format for automated assembly.

Supervisors Replacement Considerations

• MAX708SARA+ (Maxim Integrated)
• ADM708SARZ (Analog Devices)

Supervisors FAQ

Does the ADM708RAR-REEL include a watchdog timer?

No, this specific part does not include a watchdog timer function; it focuses solely on voltage supervision and manual reset.

What is the maximum operating supply voltage for this device?

The maximum operating supply voltage is 5.5V, allowing it to monitor standard 5V and 3.3V logic systems safely.