ADM708ARZ

Supervisors Overview

The ADM708ARZ is a microprocessor supervisory circuit designed for monitoring 5 V power supplies and batteries. It features a precision voltage monitor with a typical reset threshold of 4.40 V and an active high reset output. The device guarantees RESET validity down to VCC = 1 V, ensuring system protection during low-voltage conditions. It includes a debounced TTL/CMOS manual reset input (MR) and provides a fixed 200 ms reset pulse width upon power failure detection. The ADM708 series lacks a watchdog timer, distinguishing it from the ADM705/ADM706 variants. Operating supply current is typically 190 μA, supporting efficient power management in critical applications.

Supervisors Feature Summary

• Active high reset output for reliable signal interpretation
• Precision power-fail detection with guaranteed operation at low voltages
• Debounced manual reset input compatible with TTL/CMOS logic
• Fixed 200 ms reset pulse width for stable system recovery

Supervisors Applications

• Microprocessor systems requiring stable power supervision
• Computers and embedded controllers needing reset generation
• Critical microprocessor supply monitoring in industrial instruments

Supervisors Procurement Notes

Verify the specific suffix 'RZ' indicates the SOIC-8 surface-mount package configuration. Confirm that the active high reset output aligns with your system's logic requirements, as this variant differs from active low options. Ensure the 4.40 V threshold matches your 5 V rail design. Check RoHS compliance status if required by your manufacturing standards. Validate lead times and availability through authorized distributors, as component status may vary.

Supervisors Selection Notes

Select the ADM708ARZ when an active high reset signal is required for the supervisory output. This model is suitable for 5 V systems where precise voltage monitoring is necessary without the need for a watchdog timer. Compare against ADM706 variants if watchdog functionality is needed. Ensure the SOIC-8 package fits your PCB layout constraints. Consider the 190 μA quiescent current for battery-powered or energy-efficient designs.

Supervisors Part Context

The ADM708ARZ belongs to the ADM705/ADM706/ADM707/ADM708 family of microprocessor supervisory circuits from Analog Devices. These devices are engineered as superior upgrades for legacy MAX705-MAX708 components. The family offers various reset polarities and thresholds, with the ADM708 specifically providing an active high output. The 'RZ' suffix denotes the SOIC-8 tape and reel packaging option, facilitating automated assembly processes.

Supervisors Replacement Considerations

The ADM708ARZ serves as a direct upgrade for the MAX708 series. Verify pin compatibility and reset polarity when substituting. No other public confirmed substitute part numbers are identified in the provided documentation.