ADM708RAN

Supervisors Overview

The ADM708RAN 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. The device provides an active high reset output with a fixed 200 ms reset pulse width to ensure valid initialization. It includes a debounced manual reset input compatible with TTL/CMOS logic. The component operates within a supply voltage range up to 5.5 V, drawing a quiescent current of approximately 190 μA. It is housed in an 8-SOIC package and supports industrial temperature ranges.

Supervisors Feature Summary

• Provides precise supervision of system voltage levels with guaranteed reset validity down to 1 V supply.
• Features an active high push-pull reset output with a fixed 200 ms timeout period.
• Includes a hardware manual reset input that is internally debounced for noise immunity.

Supervisors Applications

• Microprocessor systems requiring reliable power-on reset sequences
• Controllers and intelligent instruments needing critical supply monitoring
• Computers and embedded systems utilizing 5 V or battery-powered architectures

Supervisors Procurement Notes

Verify the specific suffix RAN against official Analog Devices documentation to confirm package type and temperature grade. Confirm end-of-life status and last-time-buy dates prior to procurement planning. Ensure compatibility with existing PCB footprints for SOIC-8 packages. Cross-reference pinouts with the latest datasheet revision to avoid integration errors during replacement.

Supervisors Selection Notes

Select this component when an active high reset signal is required for downstream logic. It is suitable for applications where a fixed 200 ms delay is acceptable for system initialization. Compare against ADM705/ADM706 variants if watchdog timer functionality is needed instead. Verify that the 4.40 V threshold aligns with the monitored rail's nominal voltage and tolerance specifications.

Supervisors Part Context

The ADM708 belongs to the ADM705–ADM708 family of low-cost microprocessor supervisory circuits manufactured by Analog Devices. This series serves as a successor to the MAX705–MAX708 line, offering similar functionality with updated manufacturing processes. The family distinguishes itself through variations in reset polarity and the inclusion of independent watchdog timers in specific models.

Supervisors Replacement Considerations

• MAX708CPA+
• MAX708EPA+