Analog Devices Inc./Maxim Integrated MAX702EPA

Overview

MAX702EPA from Maxim Integrated is a precision power-supply supervisory circuit designed to monitor +5V supplies and assert a reset signal during brownout, power-up, or power-down events. It features a factory-trimmed 4.65V reset threshold, guaranteed 200ms minimum reset pulse width, debounced manual-reset input (MR), and operates reliably down to VCC = 1V. It is used in microprocessor-based systems requiring robust, low-component-count power monitoring.

For engineers reviewing the MAX702EPA datasheet, MAX702EPA pinout, MAX702EPA application, or MAX702EPA equivalent, this page delivers verified electrical parameters, temperature-rated package details (-40°C to +85°C), functional role in µP reset sequencing, and validated alternative options for industrial embedded designs.

Technical Context

The MAX702EPA implements a single-supply voltage monitor with internal bandgap reference and comparator logic to detect VCC falling below 4.65V. Its RESET output is active-low and guaranteed functional down to VCC = 1V, ensuring deterministic reset assertion even during deep undervoltage conditions.

It includes a debounced MR input with internal 5µA pullup and 0.7V threshold, enabling reliable pushbutton-initiated resets without external RC filtering. The device requires no external components when used with +5V systems and delivers a minimum 200ms reset pulse on power-up, power-down, and low-voltage events.

Key Specifications

Pinout & Package

MAX702EPA is supplied in an 8-pin plastic dual-inline package (PDIP) with standard 0.3-inch body width and 0.1-inch lead pitch. Pin 1 is marked by a notch or dot; leads are tin-lead or RoHS-compliant (designated by '+' suffix).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar power-supply supervisory applications.

Compared with TPS3808G33DBVR and ADM6713ARZ-46, the MAX702EPA uniquely combines +5V-specific 4.65V threshold, integrated manual reset, PDIP packaging, and guaranteed 1V operation-making it optimal for industrial retrofits and temperature-stressed µP systems where simplicity and proven reliability outweigh feature expansion.

Availability

MAX702EPA is available at Aetrix Electronics and suitable for industrial PLC controllers, medical diagnostic instruments, telecom line cards, and test & measurement equipment requiring stable component supply across extended temperature ranges.

Supply support for MAX702EPA includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated is a semiconductor company specializing in analog and mixed-signal ICs for power management, interface, sensing, and security applications.

The MAX700/MAX701/MAX702 family was designed specifically for cost-sensitive, high-reliability microprocessor power supervision-emphasizing minimal external components, guaranteed timing, and wide operating margins in industrial and computing environments.

FAQ

What is the reset threshold voltage of the MAX702EPA?

The MAX702EPA has a factory-trimmed reset threshold of 4.65V, with a guaranteed tolerance of ±0.15V across its full operating temperature range (-40°C to +85°C). This value applies to both power-up and power-down conditions and is optimized for +5V digital systems. The MAX702EPA does not support adjustable thresholds or external sense inputs-unlike the MAX700 variant-making it a fixed-threshold solution for simplified design.

Does the MAX702EPA require external components to operate with a +5V supply?

No, the MAX702EPA requires no external components when used with a +5V supply. Its internal voltage reference and comparator eliminate the need for resistor dividers, capacitors, or trimming networks. Only an external pullup resistor on the open-drain RESET pin is necessary for proper logic-level interfacing with the microprocessor. This simplifies BOM and improves long-term reliability compared to discrete reset solutions.

What is the minimum VCC voltage at which the MAX702EPA guarantees correct RESET output state?

The MAX702EPA guarantees correct RESET output state down to VCC = 1V, as confirmed in Figure 4 of the datasheet and specified under "Min VCC for Valid Reset Output." This ensures the reset signal remains asserted during deep brownout events, preventing premature release of the microprocessor before supply stabilization-even when VCC sags below typical logic thresholds.

Can the MAX702EPA be used in place of the MAX701EPA or MAX700EPA?

The MAX702EPA cannot replace the MAX701EPA or MAX700EPA in designs requiring dual active-high/active-low reset outputs (MAX701) or adjustable voltage monitoring via SENSE/HYST pins (MAX700). The MAX702EPA provides only a single active-low RESET output and lacks SENSE, HYST, and CTL pins. Its pinout differs significantly-only MR, GND, RESET, VCC, and N.C. pins are populated-so PCB layout changes are required for substitution.

Is the MAX702EPA RoHS-compliant and what package options are available?

Yes, the MAX702EPA is available in RoHS-compliant form; ordering requires adding the '+' suffix (e.g., MAX702EPA+). It is supplied exclusively in the 8-pin PDIP package (package code P8+2), with leaded and lead-free variants. Unlike the MAX702ESA, the MAX702EPA does not offer a surface-mount option-making it ideal for through-hole assembly, prototyping, and legacy industrial boards requiring socket-based serviceability.