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MAX814NEPA+

Description
supervisory circuits 3V & 5V upower supervisor
CategoryPower/power management    The power supply circuit   
File Size523KB,16 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Environmental Compliance
Download Datasheet Parametric View All

MAX814NEPA+ Overview

supervisory circuits 3V & 5V upower supervisor

MAX814NEPA+ Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerMaxim
Parts packaging codeDIP
package instructionDIP, DIP8,.3
Contacts8
Reach Compliance Codecompli
ECCN codeEAR99
Factory Lead Time1 week
Other featuresRESET THRESHOLD VOLTAGE IS 4.55V;MANUAL RESET INPUT
Adjustable thresholdNO
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeR-PDIP-T8
JESD-609 codee3
length9.375 mm
Humidity sensitivity level1
Number of channels1
Number of functions1
Number of terminals8
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeDIP
Encapsulate equivalent codeDIP8,.3
Package shapeRECTANGULAR
Package formIN-LINE
Peak Reflow Temperature (Celsius)260
power supply1.2/5 V
Certification statusNot Qualified
Maximum seat height4.572 mm
Maximum supply current (Isup)0.085 mA
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)1.2 V
Nominal supply voltage (Vsup)4.6 V
surface mountNO
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn)
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Threshold voltage nominal+4.55V
Maximum time at peak reflow temperatureNOT SPECIFIED
width7.62 mm
19-0412; Rev 1; 12/05
±1% Accuracy, Low-Power, +3V and +5V
µP Supervisory Circuits
_______________General Description
The MAX814/MAX815/MAX816 are high-accuracy
microprocessor (µP) supervisory circuits that provide
power-on reset, watchdog, and power-fail functions.
They eliminate manual trimming and improve reliability
in critical applications needing high-accuracy reset
thresholds. The RESET output is guaranteed to be in
the correct state for V
CC
down to 1V. The reset com-
parator is designed to ignore fast transients on V
CC
.
Reset thresholds are available for operation with a vari-
ety of 3V and 5V supply voltages.
A 75µA maximum supply current makes the MAX814/
MAX815/MAX816 ideal for use in portable equipment. All
three devices are available in 8-pin DIP and SO pack-
ages. See the
Selector Table
for a review of features.
____________________________Features
±1% Worst-Case Reset Threshold Accuracy
4.8V, 4.7V, 4.55V, 3.03V, or Adjustable Reset
Thresholds
±1% Low-Line Threshold Accuracy (MAX814)
60mV Above Reset Threshold
200ms Reset Time Delay
Active-Low RESET Output
Active-High RESET Output (MAX814/MAX816)
75µA Max Supply Current
Guaranteed RESET Valid to V
CC
= 1V
Manual Reset Input
±2% Power-Fail Comparator
Independent Watchdog with 1.56sec Timeout
(MAX815)
Power-Supply Glitch Immunity
8-Pin SO and DIP Packages
MAX814/MAX815/MAX816
_____________________Selector Table
FEATURE
RESET Output
RESET Output
Manual Reset
V
CC
Reset Voltage
Power-Fail Monitor
Low-Line Detector
Watchdog Circuit
MAX814
K, L, N, T
K, L, N, T
MAX815
MAX816
Adjustable
______________Ordering Information
PART*
MAX814_CPA
TEMP RANGE
0°C to +70°C
PIN-PACKAGE
8 PDIP
________________________Applications
Medical Equipment
Controllers
Intelligent Instruments
Critical µP Power Monitoring
Portable/Battery-Powered Equipment
Set-Top Boxes
*The
MAX814/MAX815 offer a choice of reset threshold voltages.
From the Reset Trip Threshold table, select the suffix corre-
sponding to the desired threshold and insert it into the blank to
complete the part number.
Devices are available in both leaded and lead-free packaging.
Specify lead free by adding the + symbol at the end of the part
number when ordering.
Ordering Information continued at end of data sheet.
Reset Trip Thresholds table appears at end of data sheet.
__________________________________________________________Pin Configurations
TOP VIEW
MR
1
V
CC
2
GND
3
PFI
4
8
RESET
RESET
LOW LINE
PFO
MR
1
V
CC
2
GND
3
PFI
4
8
WDO
RESET
WDI
PFO
MR
1
V
CC
2
GND
3
PFI
4
8
RESET
RESET
RESET IN
PFO
MAX814
7
6
5
MAX815
7
6
5
MAX816
7
6
5
DIP/SO
DIP/SO
DIP/SO
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
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