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MAX808L, MAX808M, MAX808N

8-Pin µP Supervisory Circuits with ±1.5% Reset Accuracy

1.5% Accurate Reset ICs with Battery-Backup

Product Details

Key Features

Applications/Uses

Parametric specs for Battery Backup Circuits
Reset Thresh. (V) 4.0 to 4.5
4.5 to 5.0
Reset Out Active Low
Push-Pull
ICC (µA) (max) 90
Oper. Temp. (°C) -40 to +85
0 to +70
Package/Pins PDIP/8
SOIC (N)/8
Budgetary
Price (See Notes)
3.79
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Simplified Block Diagram

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Parameters

Parametric specs for Battery Backup Circuits
Reset Thresh. (V) 4.0 to 4.5
4.5 to 5.0
Reset Out Active Low
Push-Pull
ICC (µA) (max) 90
Oper. Temp. (°C) -40 to +85
0 to +70
Package/Pins PDIP/8
SOIC (N)/8
Budgetary
Price (See Notes)
3.79

Key Features

  • Precision Voltage Monitoring, ±1.5% Reset Accuracy
  • 200ms Power-OK/Reset Time Delay
  • Active-low RESET Output (MAX808)
  • RESET and active-low RESET Outputs (MAX801)
  • Watchdog Timer (MAX801)
  • On-Board Gating of Chip-Enable Signals (MAX808):
    • Memory Write-Cycle Completion
    • 3ns CE Gate Propagation Delay
  • 1µA Standby Current
  • Power Switching:
    • 250mA in VCC Mode
    • 20mA in Battery-Backup Mode
  • MaxCap™/SuperCap™ Compatible
  • Active-low RESET Guaranteed Valid to VCC = 1V
  • Low-Line Threshold 52mV Above Reset Threshold

Applications/Uses

  • Computers: Desktop, Workstation, Server
  • Controllers
  • Critical µP Monitoring
  • Embedded Systems
  • Intelligent Instruments
  • Portable Battery-Powered Equipment

Description

The MAX801/MAX808 microprocessor (µP) supervisory circuits monitor and control the activities of +5V µPs by providing backup-battery switchover, low-line indication, and µP reset. Additional features include a watchdog for the MAX801 and CMOS RAM write protection for the MAX808.

The MAX801/MAX808 offer a choice of reset-threshold voltage (denoted by suffix letter): 4.675V (L), 4.575V (N), and 4.425V (M). These devices are available in 8-pin DIP and SO packages.

Simplified Block Diagram

MAX801L, MAX801M, MAX801N, MAX808L, MAX808M, MAX808N: Typical Operating Circuit MAX801L, MAX801M, MAX801N, MAX808L, MAX808M, MAX808N: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .