MAX708SCUA-TG

Supervisors Overview

The MAX708SCUA-TG is a microprocessor supervisory circuit manufactured by onsemi, designed to monitor digital system power supplies. It operates within a supply voltage range of 1V to 5.5V and features a precise under-voltage threshold of 2.93V with an over-voltage threshold of 2.97V. The device provides a push-pull reset output with a typical timeout delay of 200ms. It includes manual reset capability and power-fail monitoring. The component is housed in an 8-pin µMAX package and functions with a maximum operating temperature of +85°C.

Supervisors Feature Summary

• Monitors VCC power supply voltage and triggers reset signals during abnormal conditions
• Provides both high-level and low-level active push-pull reset outputs
• Includes manual reset input and independent power-fail comparator for comprehensive supervision

Supervisors Applications

• Computer systems requiring reliable power supervision
• Embedded control systems needing voltage monitoring
• Battery-powered devices utilizing low static current operation

Supervisors Procurement Notes

Verify the manufacturer designation as onsemi, reflecting the integration history involving Maxim Integrated products. Confirm the specific suffix indicates tape-and-reel packaging. Ensure the part number matches the exact threshold voltage requirements for the target application design.

Supervisors Selection Notes

Select this component when a fixed 2.93V threshold is required for single-channel voltage monitoring. Consider the µMAX package size for space-constrained designs. Evaluate the 16µA typical supply current against battery life requirements. Verify compatibility with the system's logic levels for the push-pull output configuration.

Supervisors Part Context

This device belongs to the MAX70x family of low-cost supervisory circuits. Unlike variants such as the MAX705 or MAX706, it does not integrate a watchdog timer. Instead, it utilizes a high-level active reset output to replace the watchdog function found in other family members. This simplifies the circuit for applications that do not require periodic watchdog servicing.

Supervisors Replacement Considerations

Cross-reference with MAX708SCUA+T for lead-free compliance verification. Check MAX708TCUA-T for alternative threshold voltages if 3.08V is acceptable. Ensure pinout compatibility with existing board layouts before substituting.