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DS1238AS-10/T&R

Description
IC micromanager 10% 16-soic
CategoryPower/power management    The power supply circuit   
File Size215KB,14 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Download Datasheet Parametric Compare View All

DS1238AS-10/T&R Overview

IC micromanager 10% 16-soic

DS1238AS-10/T&R Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerMaxim
Parts packaging codeSOIC
package instructionSOP,
Contacts16
Reach Compliance Codecompliant
ECCN codeEAR99
Other featuresPUSHBUTTON RESET INPUT
Adjustable thresholdNO
Analog Integrated Circuits - Other TypesPOWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 codeR-PDSO-G16
JESD-609 codee0
length10.3 mm
Humidity sensitivity level1
Number of channels1
Number of functions1
Number of terminals16
Maximum operating temperature70 °C
Minimum operating temperature
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)245
Certification statusNot Qualified
Maximum seat height2.65 mm
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)4.75 V
Nominal supply voltage (Vsup)5 V
surface mountYES
Temperature levelCOMMERCIAL
Terminal surfaceTIN LEAD
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width7.5 mm
DS1238
MicroManager
www.dalsemi.com
FEATURES
Holds microprocessor in check during power
transients
Halts and restarts an out-of-control
microprocessor
Warns microprocessor of an impending power
failure
Converts CMOS SRAM into nonvolatile
memory
Unconditionally write-protects memory when
power supply is out of tolerance
Delays write protection until completion of
the current memory cycle
Consumes less than 200 nA of battery current
Controls external power switch for high
current applications
Debounces pushbutton reset
Accurate 10% power supply monitoring
Optional 5% power supply monitoring
designated DS1238-5
Provides orderly shutdown in microprocessor
applications
Pin-for-pin compatible with MAX691
Standard 16-pin DIP or space-saving 16-pin
SOIC
Optional industrial temperature range -40°C
to +85°C
PIN ASSIGNMENT
VBAT
VCCO
VCC
GND
PF
RVT
OSCIN
OSCSEL
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
RST
RST
WDS
CEI
CEO
ST
NMI
IN
VBAT
VCCO
VCC
GND
PF
RVT
OSCIN
OSCSEL
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
RST
RST
WDS
CEI
CEO
ST
NMI
IN
16-Pin DIP (300-mil)
See Mech. Drawings Section
16-Pin SOIC (300-mil)
See Mech. Drawings Section
PIN DESCRIPTION
V
BAT
V
CCO
V
CC
GND
PF
RVT
OSCIN
OSCSEL
IN
NMI
ST
CEO
CEI
WDS
RST
RST
- +3-Volt Battery Input
- Switched SRAM Supply Output
- +5-Volt Power Supply Input
- Ground
- Power-Fail
- Reset Voltage Threshold
- Oscillator In
- Oscillator Select
- Early Warning Input
- Non-Maskable Interrupt
- Strobe Input
- Chip Enable Output
- Chip Enable Input
- Watchdog Status
- Reset Output (active low)
- Reset Output (active high)
DESCRIPTION
The DS1238 MicroManager provides all the necessary functions for power supply monitoring, reset
control, and memory backup in microprocessor-based systems. A precise internal voltage reference and
comparator circuit monitor power supply status. When an out-of-tolerance condition occurs, the
microprocessor reset and power-fail outputs are forced active, and static RAM control unconditionally
write protects external memory. The DS1238 also provides early warning detection of a user-defined
threshold by driving a non-maskable interrupt. External reset control is provided by a pushbutton reset
1 of 14
111899

DS1238AS-10/T&R Related Products

DS1238AS-10/T&R DS1238AS-5+ DS1238S-10+ DS1238S-5+ DS1238S-5/T&R; DS1238AS-10/T&R; DS1238S+T&R; DS1238S-5+T&R; DS1238
Description IC micromanager 10% 16-soic IC micro manager 5% 16-soic IC microman W/fresh 10% 16-soic IC microman W/fresh 5% 16-soic IC MICROMAN W/FRESH 5% 16-SOIC IC MICROMANAGER 10% 16-SOIC IC MICROMAN W/FRESH 10% 16-SOIC IC MICROMAN W/FRESH 5% 16-SOIC Power Supply Management Circuit, Fixed, 1 Channel, CMOS, PDIP16, 0.300 INCH, DIP-16
Is it Rohs certified? incompatible conform to conform to conform to - - - - incompatible
Maker Maxim Maxim Maxim Maxim - - - - Maxim
Parts packaging code SOIC SOIC SOIC SOIC - - - - DIP
package instruction SOP, SOP, SOP, SOP16,.4 0.300 INCH, SOIC-16 - - - - 0.300 INCH, DIP-16
Contacts 16 16 16 16 - - - - 16
Reach Compliance Code compliant compli compli unknown - - - - not_compliant
ECCN code EAR99 EAR99 EAR99 EAR99 - - - - EAR99
Adjustable threshold NO NO NO NO - - - - NO
Analog Integrated Circuits - Other Types POWER SUPPLY MANAGEMENT CIRCUIT POWER SUPPLY MANAGEMENT CIRCUIT POWER SUPPLY MANAGEMENT CIRCUIT POWER SUPPLY MANAGEMENT CIRCUIT - - - - POWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 code R-PDSO-G16 R-PDSO-G16 R-PDSO-G16 R-PDSO-G16 - - - - R-PDIP-T16
JESD-609 code e0 e3 e3 e3 - - - - e0
length 10.3 mm 10.3 mm 10.3 mm 10.3 mm - - - - 19.175 mm
Number of channels 1 1 2 1 - - - - 1
Number of functions 1 1 1 1 - - - - 1
Number of terminals 16 16 16 16 - - - - 16
Maximum operating temperature 70 °C 70 °C 70 °C 70 °C - - - - 70 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY - - - - PLASTIC/EPOXY
encapsulated code SOP SOP SOP SOP - - - - DIP
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR - - - - RECTANGULAR
Package form SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE - - - - IN-LINE
Peak Reflow Temperature (Celsius) 245 260 260 260 - - - - NOT SPECIFIED
Certification status Not Qualified Not Qualified Not Qualified Not Qualified - - - - Not Qualified
Maximum seat height 2.65 mm 2.65 mm 2.65 mm 2.65 mm - - - - 4.572 mm
Nominal supply voltage (Vsup) 5 V 5 V 5 V 5 V - - - - 5 V
surface mount YES YES YES YES - - - - NO
Temperature level COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL - - - - COMMERCIAL
Terminal surface TIN LEAD Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) - - - - Tin/Lead (Sn/Pb)
Terminal form GULL WING GULL WING GULL WING GULL WING - - - - THROUGH-HOLE
Terminal pitch 1.27 mm 1.27 mm 1.27 mm 1.27 mm - - - - 2.54 mm
Terminal location DUAL DUAL DUAL DUAL - - - - DUAL
Maximum time at peak reflow temperature NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED - - - - NOT SPECIFIED
width 7.5 mm 7.5 mm 7.5 mm 7.5 mm - - - - 7.62 mm
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