ADM708ARM

Supervisors Overview

The ADM708ARM is a microprocessor supervisory circuit designed for monitoring 5 V power supplies and batteries. It features a precision voltage monitor with a threshold of 4.40 V and provides an active high reset output. The device includes a debounced manual reset input and operates within a supply voltage range up to 5.5 V. Key electrical parameters include a quiescent current of 190 μA, a reset pulse width of 200 ms, and an operating temperature range from -40°C to +85°C. It is housed in an MSOP-8 package.

Supervisors Feature Summary

• Provides precise supervision of 5 V power rails with guaranteed valid reset signals at low voltages
• Features a debounced manual reset input compatible with TTL/CMOS logic levels
• Delivers an active high reset output suitable for direct interface with microprocessors

Supervisors Applications

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

Supervisors Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm pinout and electrical characteristics. Confirm RoHS compliance status and lead times directly with authorized distributors as availability varies. Ensure the selected variant matches the required package type and temperature grade for the intended application environment.

Supervisors Selection Notes

Select this component when an active high reset output is required for 5 V systems. Compare against the ADM706 which offers an active low output if system logic compatibility differs. Verify that the 4.40 V threshold aligns with the specific brown-out requirements of the target microprocessor or memory device.

Supervisors Part Context

The ADM708 is part of the ADM705/ADM706/ADM707/ADM708 family of low-cost microprocessor supervisory circuits. These devices are engineered to replace older generations such as the MAX705 series. The family shares common architectural features including manual reset inputs and watchdog timers (in select variants), ensuring backward compatibility while offering improved performance metrics.

Supervisors Replacement Considerations

Public confirmed substitute part numbers include MAX708CSA+ and MAX708CPA+. Verify functional equivalence regarding reset polarity and threshold voltages before implementation.