QuickView - MAX801L, MAX801M, MAX801N, MAX808L, MAX808M, MAX808N 8-Pin µP Supervisory Circuits with ±1.5% Reset Accuracy

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MAX801L, MAX801M, MAX801N, MAX808L, MAX808M, MAX808N 8-Pin µP Supervisory Circuits with ±1.5% Reset Accuracy

1.5% Accurate Reset ICs with Battery-Backup

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Description

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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.

Key Features Applications/Uses

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 V_CC Mode
20mA in Battery-Backup Mode

MaxCap™/SuperCap™ Compatible
Active-low RESET Guaranteed Valid to V_CC = 1V
Low-Line Threshold 52mV Above Reset Threshold
Underwriters Laboratories (UL®) Recognized

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

Key Specifications: Battery Backup Circuits

Part Number

Reset Threshold Range (V)

Active-Low Reset Output

Active-High Reset Output

Max. I_CC (µA)

Features

RoHS Available

Package

Smallest Available Package (max w/pins) (mm²)

Operating Temp. Range (°C)

Price^**

MAX801

3.3 to 5.5

Push-Pull

110

•	High Accuracy (1%)

•

Low Line

•

Watchdog

Yes

CDIP(N)/8
PDIP(N)/8
SOIC(N)/8

-55 to +125
-40 to +85
0 to +70

$3.17 @ 1k

MAX808

•	Chip Enable Gate

•	High Accuracy (1%)

•

Low Line

$3.17 @ 1k

See All Battery Backup Circuits (86)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Diagram

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

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Document Ref.: 19-1086; Rev 1; 2006-12-05
This page last modified: 2007-07-18