ADM707AR

Supervisors Overview

The ADM707AR is a microprocessor supervisory circuit designed for monitoring 5 V power supplies and batteries. It features a precision voltage monitor with a threshold of 4.65 V and provides an active high reset output. The device guarantees that the RESET signal remains valid down to a supply voltage (VCC) of 1 V. It includes a debounced TTL/CMOS manual reset input and delivers a fixed 200 ms reset pulse width upon power-up or fault detection. The component operates within a temperature range of -40°C to +85°C and is housed in an 8-SOIC package.

Supervisors Feature Summary

• Provides active high reset output with guaranteed validity at VCC = 1 V
• Includes debounced manual reset input compatible with TTL and CMOS logic levels
• Generates a fixed 200 ms reset pulse width for reliable system initialization

Supervisors Applications

• Microprocessor systems requiring critical supply monitoring
• Computers and controllers needing power-fail warnings
• Intelligent instruments utilizing 5 V battery or supply monitoring

Supervisors Procurement Notes

Verify current availability status as this component may be discontinued or subject to limited supply constraints. Confirm exact ordering suffixes for packaging variations such as tape-and-reel options. Ensure compatibility with existing PCB footprints for the 8-SOIC package. Review manufacturer documentation for any end-of-life notifications or recommended alternative part numbers before finalizing procurement plans.

Supervisors Selection Notes

Select this component when an active high reset signal is required for 5 V systems. It serves as a direct functional replacement for legacy MAX707 devices. Consider the 190 μA quiescent current for low-power applications. Verify that the 4.65 V threshold aligns with the specific supply rail requirements of the target design.

Supervisors Part Context

The ADM707AR belongs to the ADM705/ADM706/ADM707/ADM708 series of low-cost microprocessor supervisory circuits from Analog Devices. This family is engineered to monitor power supplies and ensure proper system resets during brown-out conditions. The ADM707 variant specifically distinguishes itself by providing an active high reset output, unlike other members of the series that may offer active low outputs.

Supervisors Replacement Considerations

The ADM707AR is functionally equivalent to the Maxim MAX707. When substituting, verify pinout compatibility and ensure the active high reset polarity matches the receiving logic. Check if the target application requires the independent watchdog timer found in ADM705/ADM706 variants, which the ADM707 lacks.