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MAX795TCSA+T

Description
supervisory circuits 3/3.3/adjv mpu supervisor
CategoryPower/power management    The power supply circuit   
File Size178KB,20 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Environmental Compliance
Download Datasheet Parametric View All

MAX795TCSA+T Overview

supervisory circuits 3/3.3/adjv mpu supervisor

MAX795TCSA+T Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerMaxim
Parts packaging codeSOIC
package instructionSOP, SOP8,.25
Contacts8
Reach Compliance Codecompli
ECCN codeEAR99
Factory Lead Time7 weeks
Is SamacsysN
Adjustable thresholdNO
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeR-PDSO-G8
JESD-609 codee3
length4.9 mm
Humidity sensitivity level1
Number of channels2
Number of functions1
Number of terminals8
Maximum operating temperature70 °C
Minimum operating temperature
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP8,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)260
power supply3.3/5 V
Certification statusNot Qualified
Maximum seat height1.75 mm
Maximum supply current (Isup)0.07 mA
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)1 V
Nominal supply voltage (Vsup)3.3 V
surface mountYES
Temperature levelCOMMERCIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width3.9 mm
Base Number Matches1
19-0366; Rev 6; 3/10
3.0V/3.3V Adjustable Microprocessor
Supervisory Circuits
General Description
The MAX793/MAX794/MAX795 microprocessor (µP)
supervisory circuits monitor and control the activities of
+3.0V/+3.3V µPs by providing backup-battery switchover,
among other features such as low-line indication, µP
reset, write protection for CMOS RAM, and a watchdog
(see the
Selector Guide
below). The backup-battery volt-
age can exceed V
CC
, permitting the use of 3.6V lithium
batteries in systems using 3.0V to 3.3V for V
CC
.
The MAX793/MAX795 offer a choice of reset threshold
voltage range (denoted by suffix letter): 3.00V to 3.15V
(T), 2.85V to 3.00V (S), and 2.55V to 2.70V (R). The
MAX794’s reset threshold is set externally with a resistor
divider. The MAX793/MAX794 are available in 16-pin
DIP and narrow SO packages, and the MAX795 comes
in 8-pin DIP and SO packages.
____________________________Features
MAX793/MAX794/MAX795
o
Precision Supply-Voltage Monitor:
Fixed Reset Trip Voltage (MAX793/MAX795)
Adjustable Reset Trip Voltage (MAX794)
o
Guaranteed Reset Assertion to V
CC
= 1V
o
Backup-Battery Power Switching—Battery
Voltage Can Exceed V
CC
o
On-Board Gating of Chip-Enable Signals—7ns
Max Propagation Delay
MAX793/MAX794 Only
o
Battery Freshness Seal
o
Battery OK Output (MAX793)
o
Uncommitted Voltage Monitor for Power-Fail or
Low-Battery Warning
o
Independent Watchdog Timer (1.6s timeout)
o
Manual Reset Input
MAX793/MAX794/MAX795
_____________________Selector Guide
FEATURE
Active-Low Reset
Active-High Reset
Programmable Reset
Threshold
Low-Line Early Warning
Output
Backup-Battery
Switchover
External Switch Driver
Power-Fail Comparator
Battery OK Output
Watchdog Input
Battery Freshness Seal
Manual Reset Input
Chip-Enable Gating
Pin-Package


MAX793


MAX794






MAX795

PART*
MAX793_CPE
MAX793_CSE
Ordering Information
TEMP RANGE
0°C to +70°C
0°C to +70°C
PIN-
PACKAGE
16 Plastic DIP
16 Narrow SO















16-DIP/SO 16-DIP/SO 8-DIP/SO
Ordering Information continued at end of data sheet.
*The
MAX793/MAX795 offer a choice of reset threshold voltage.
Select the letter corresponding to the desired reset threshold
voltage range (T = 3.00V to 3.15V, S = 2.85V to 3.00V, R =
2.55V to 2.70V) and insert it into the blank to complete the part
number. The MAX794’s reset threshold is adjustable.
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.
__________Typical Operating Circuit
3.0V OR 3.3V
0.1µF
PMOS
V
CC
BATT ON OUT
BATT
CE OUT
MAX793
(OPTIONAL)
Si9433DY
SILICONIX
0.1µF
CMOS
RAM
V
CC
CE IN
WDI
LOWLINE
V
CC
ADDRESS
DECODER
A0-A15
I/O
NMI
µP
RESET
________________________Applications
Battery-Powered Computers and Controllers
Embedded Controllers
Intelligent Controllers
Critical µP Power Monitoring
Portable Equipment
3.6V
0.1µF
WDO
+5V SUPPLY
FAILURE
+5V
MR
PFO
PFI
RESET
BATT OK
GND
Pin Configurations appear at end of data sheet.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
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