ADM708RAR

Supervisors Overview

The ADM708RAR is a microprocessor supervisory circuit manufactured by Analog Devices Inc., designed for monitoring power supply voltages in embedded systems. It operates within a supply voltage range of 1 V to 5.5 V and features a precise reset threshold of 4.4 V. The device provides an active-high push-pull output with a standard 200 ms reset pulse width. It includes a debounced manual reset input and supports industrial temperature ranges from -40°C to +85°C. Packaged in an 8-pin SOIC, it draws a typical quiescent current of 190 μA, ensuring efficient power management for critical applications.

Supervisors Feature Summary

• Provides guaranteed valid reset signals down to 1 V supply voltage
• Features a precision 4.4 V threshold for accurate power monitoring
• Includes a debounced manual reset input for system control
• Delivers an active-high push-pull output driver

Supervisors Applications

• Microprocessor system power supervision
• Critical microprocessor supply monitoring
• Controllers and intelligent instruments
• Computer hardware reset generation

Supervisors Procurement Notes

Verify the specific suffix 'R' against official Analog Devices documentation to confirm package type and temperature grade accuracy. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability may vary. Ensure the selected variant matches the required operating temperature range and pin configuration for your PCB layout.

Supervisors Selection Notes

Select this component when a fixed 4.4 V threshold is required for 5 V systems. Compare quiescent current specifications against other supervisory ICs if power efficiency is critical. Verify that the active-high output logic aligns with the target microprocessor's reset input requirements. Consider the SOIC package size constraints during mechanical design.

Supervisors Part Context

The ADM708 belongs to the ADM705-ADM708 family of low-cost microprocessor supervisory circuits. These devices are engineered to replace older generations like the MAX705 series. The family offers various thresholds and output polarities to suit different voltage rails and logic levels, providing a standardized solution for power-fail detection and reset timing in digital electronics.

Supervisors Replacement Considerations

MAX708 variants such as MAX708CPA+ or MAX708SESA+ serve as functional equivalents. Verify threshold voltage compatibility (4.4 V) and output polarity before substitution. Check package dimensions and pinout alignment to ensure physical interchangeability without redesigning the footprint.