ADM705AR-REEL

Supervisors Overview

The ADM705AR-REEL is a microprocessor supervisory circuit from Analog Devices Inc., designed for monitoring 5V power supplies. It features a precision voltage monitor with a threshold of 4.65V and an independent watchdog timer with a 1.60-second timeout. The device guarantees a valid reset signal when VCC equals 1V, utilizing a 200ms reset pulse width. It operates within a temperature range of -40°C to +85°C and consumes only 190μA of quiescent current. Packaged in an 8-SOIC surface-mount format on a reel, it includes a debounced manual reset input.

Supervisors Feature Summary

• Includes an independent watchdog timer with a 1.60-second timeout to prevent software lockups
• Provides a precision supply voltage monitor with a 4.65V threshold for reliable power supervision
• Features a debounced TTL/CMOS manual reset input for system control
• Guarantees valid reset output at low supply voltages down to 1V

Supervisors Applications

• Microprocessor systems requiring stable power supervision
• Computers and controllers needing automatic reset capabilities
• Intelligent instruments demanding low battery warning detection
• Critical microprocessor supply monitoring applications

Supervisors Procurement Notes

Verify the specific suffix REEL indicates tape-and-reel packaging suitable for automated assembly processes. Confirm the active status of this part number as legacy products may have limited availability or require substitution with newer equivalents like the ADM705ARZ series. Ensure compatibility with existing PCB footprints and design specifications before finalizing procurement decisions.

Supervisors Selection Notes

Select this component for designs requiring both voltage supervision and watchdog functionality in a single package. The 4.65V threshold suits standard 5V logic systems. Consider the 8-SOIC package for space-constrained surface-mount applications. Evaluate the 190μA quiescent current against system power budgets to ensure efficiency requirements are met during normal operation.

Supervisors Part Context

This part belongs to the ADM705/ADM706/ADM707/ADM708 family of microprocessor supervisory circuits. While the ADM705 and ADM706 include watchdog timers, the ADM707 and ADM708 variants offer active-high reset outputs instead. The ADM705AR-REEL specifically denotes the SOIC-8 surface-mount version supplied in reel packaging, distinguishing it from through-hole DIP options.

Supervisors Replacement Considerations

Direct replacements include the ADM705ANZ for through-hole applications. Surface-mount alternatives may include the ADM705ARZ series. Verify pinout compatibility and electrical parameters such as threshold voltage and reset pulse width when substituting.