MAX692

PRODUCTION

MAX692

Microprocessor Supervisory Circuits

Industry-Standard, Full-Function µP Supervisor

PRODUCTION

MAX690, MAX691, MAX692, MAX693, MAX694, MAX695: Pin Configuration slide

MAX690, MAX691, MAX692, MAX693, MAX694, MAX695: Pin Configuration

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1ku List Price Starting From $5.99

Features

Supervisory Function Integration Saves Board Space while Fully Protecting Microprocessor-Based Systems
- Precision Voltage Monitor
  - 4.65V (MAX690, MAX691, MAX694, MAX695)
  - 4.40V (MAX692, MAX693)
- Power OK/Reset Time Delay
  - 50ms, 200ms, or Adjustable
- Watchdog Timer
  - 100ms, 1.6s, or Adjustable
- Battery Backup Power Switching
- Voltage Monitor for Power Fail or Low Battery Warning
- Minimum External Component Count
Low Power Consumption in Battery Backup Mode Extends Battery Life
- 1µA Standby Current
Onboard Gating of Chip Enable Signals Protects Against Erroneous Data Written to RAM During Low V_CC Events

Additional Details

The MAX690 family of supervisory circuits reduces the complexity and number of components required for power supply monitoring and battery control functions in microprocessor systems. These include µP reset and backup-battery switchover, watchdog timer, CMOS RAM write protection, and power-failure warning. The MAX690 family significantly improves system reliability and accu- racy compared to that obtainable with separate ICs or discrete components.

The MAX690, MAX692, and MAX694 are supplied in 8-pin packages and provide four functions:

A reset output during power-up, power-down, and brownout conditions.
Battery backup switching for CMOS RAM, CMOS microprocessor or other low power logic.
A Reset pulse if the optional watchdog timer has not been toggled within a specified time.
A 1.3V threshold detector for power fail warning, low battery detection, or to monitor a power supply other than +5V.

The MAX691, MAX693, and MAX695 are supplied in 16-pin packages and perform all MAX690, MAX692, MAX694 functions, plus:

Write protection of CMOS RAM or EEPROM.
Adjustable reset and watchdog timeout periods.
Separate outputs for indicating a watchdog timeout, backup-battery switchover, and low V_CC.

Applications

Automotive Systems
Computers
Controllers
Critical µP Power Monitoring
Intelligent Instruments

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Ask a Question

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Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 5

1ku List Price Starting From $5.99

Technical Documents 2

MAX690-MAX695: Microprocessor Supervisory Circuits Data Sheet (Rev.5) 05/06/2015

MAX690: Military Datasheet 09/11/2023

Design Resources 5

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
MAX692CPA+	Plastic Dual-In-Line, Narrow (0.3in)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
MAX692EJA	Ceramic Dual-In-Line, Narrow (0.3in)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
MAX692EPA+	Plastic Dual-In-Line, Narrow (0.3in)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
MAX692MJA	Ceramic Dual-In-Line, Narrow (0.3in)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
MAX692MJA/883B	Ceramic Dual-In-Line, Narrow (0.3in)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

MAX692CPA+
Pin/Package Drawing
Plastic Dual-In-Line, Narrow (0.3in)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

MAX692EJA
Pin/Package Drawing
Ceramic Dual-In-Line, Narrow (0.3in)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

MAX692EPA+
Pin/Package Drawing
Plastic Dual-In-Line, Narrow (0.3in)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

MAX692MJA
Pin/Package Drawing
Ceramic Dual-In-Line, Narrow (0.3in)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

MAX692MJA/883B
Pin/Package Drawing
Ceramic Dual-In-Line, Narrow (0.3in)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

Companion Parts 7

Parts	Product Life Cycle	Description
Battery Backup IC6
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
MAX802L	PRODUCTION	Microprocessor Supervisory Circuits
MAX805L	PRODUCTION	Microprocessor Supervisory Circuits
Product1
MAX802M		Microprocessor Supervisory Circuits