MAX703

PRODUCTION

Low-Cost Microprocessor Supervisory Circuits with Battery Backup

Battery-Backup with Manual Reset and Power-Fail Comparator

Data Sheet (Rev. 4) Product Selection Table

Part Models: 6
1ku List Price: Starting From $4.43

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Overview

Battery-Backup Power Switching
Precision Supply-Voltage Monitor
- 4.65V (MAX703)
- 4.40V (MAX704)
200ms Reset Pulse Width
Debounced TTL/CMOS-Compatible Manual Reset Input
200µA Quiescent Current
50nA Quiescent Current in Battery-Backup Mode
Voltage Monitor for Power-Fail or Low-Battery Warning
8-Pin DIP and SO Packages
Guaranteed RESET-bar Assertion to V_CC = 1V

The MAX703/MAX704 microprocessor (µP) supervisory circuits reduce the complexity and number of components required for power-supply monitoring and battery control functions in µP systems. These devices significantly improve system reliability and accuracy compared to that obtained with separate ICs or discrete components.

The MAX703/MAX704 are available in 8-pin DIP and SO packages and provide four functions:

An active-low reset during power-up, power-down, and brownout conditions.
Battery-backup switching for CMOS RAM, CMOS µPs, or other low-power logic circuitry.
A 1.25V threshold detector for power-fail warning, low-battery detection, or for monitoring a power supply other than +5V.
An active-low manual reset input.

The MAX703 and MAX704 differ only in their supply-voltage monitor levels. The MAX703 generates a reset when the supply drops below 4.65V, while the MAX704 generates a reset below 4.40V.

Applications

Computers
Controllers
Critical µP Power Monitoring
Intelligent Instruments

Part Models: 6
1ku List Price: Starting From $4.43

Documentation

Data Sheet 2

MAX703-MAX704: Low-Cost Microprocessor Supervisory Circuits with Battery Backup Data Sheet (Rev.4) 01/20/2021

MAX703: Military Datasheet 09/11/2023

Reliability Data 1

MAX703 Reliability Data 01/12/2023

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX703CPA+	Plastic Dual-In-Line, Narrow (0.3in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX703CSA+	Small-Outline IC, Narrow (0.15in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX703CSA+T	Small-Outline IC, Narrow (0.15in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX703EPA+	Plastic Dual-In-Line, Narrow (0.3in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX703ESA+	Small-Outline IC, Narrow (0.15in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX703ESA+T	Small-Outline IC, Narrow (0.15in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 30, 2020 - 1702R2 ASSEMBLY
		pcn_1702r2
MAX703CSA+	PRODUCTION
MAX703CSA+T	PRODUCTION
MAX703ESA+	PRODUCTION
MAX703ESA+T	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Supervisory Circuits & Reset ICs 4
MAX6361	PRODUCTION	SOT23, Low-Power Microprocessor Supervisory Circuits with Battery Backup
MAX6362	PRODUCTION	SOT23, Low-Power Microprocessor Supervisory Circuits with Battery Backup
MAX6363	PRODUCTION	SOT23, Low-Power Microprocessor Supervisory Circuits with Battery Backup
MAX6364	PRODUCTION	SOT23, Low-Power Microprocessor Supervisory Circuits with Battery Backup

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