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DS1834AS+T&R

Description
Power Supply Support Circuit, Fixed, 2 Channel, +2.55/2.88VV, CMOS, PDSO8, 0.150 INCH, ROHS COMPLIANT, SOIC-8
CategoryPower/power management    The power supply circuit   
File Size124KB,7 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Environmental Compliance
Download Datasheet Parametric Compare View All

DS1834AS+T&R Overview

Power Supply Support Circuit, Fixed, 2 Channel, +2.55/2.88VV, CMOS, PDSO8, 0.150 INCH, ROHS COMPLIANT, SOIC-8

DS1834AS+T&R Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
Parts packaging codeSOIC
package instructionSOP, SOP8,.25
Contacts8
Reach Compliance Codecompli
ECCN codeEAR99
Factory Lead Time6 weeks
Other featuresPUSHBUTTON RESET
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 temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP8,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)260
power supply1.2/5.5 V
Certification statusNot Qualified
Maximum seat height1.75 mm
Maximum supply current (Isup)0.05 mA
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)1.2 V
Nominal supply voltage (Vsup)3.3 V
surface mountYES
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Threshold voltage nominal+2.55/2.88V
Maximum time at peak reflow temperatureNOT SPECIFIED
width3.9 mm
Base Number Matches1
DS1834/A/D
Dual EconoReset with Pushbutton
www.dalsemi.com
FEATURES
5V power-on reset
3.3V power-on reset
Internal power is drawn from higher of either
the 5V
IN
input or the 3.3V
IN
input
Excellent for systems designed to operate
with dual power supplies
Asserts resets during power transients
Pushbutton reset input for system override
Maintains reset for 350 ms after V
CC
returns
to an in-tolerance condition
Reduces need for discrete components
Precision temperature-compensated voltage
reference and voltage sensor
8-pin DIP, 8-pin SOIC, and 8-pin
µ-SOP
available
CMOS output for low current operation on
the DS1834 and DS1834D
Operating temperature of -40°C to +85°C
PIN ASSIGNMENT
5V
IN
5V RST
5V TOL
GND
1
2
3
4
8
7
6
5
3.3V
IN
3.3V RST
3.3V TOL
PBRST
DS1834 8-Pin DIP (300-mil)
5V
IN
5V RST
5V TOL
GND
1
2
3
4
8
7
6
5
3.3V
IN
3.3V RST
3.3V TOL
PBRST
DS1834 8-Pin SOIC (150-mil)
5V
IN
5V RST (*RST)
5V TOL
GND
1
2
3
4
8
7
6
5
3.3V
IN
3.3V RST (*RST)
3.3V TOL
PBRST
DS1834 8-Pin
µ-SOP
(118-mil)
PIN DESCRIPTION
5V
IN
5V
RST
(*RST)
5V TOL
GND
- 5V Power Supply Input
- 5V Reset Output
- Selects 5V Input Tolerance
- Ground
PBRST
- Pushbutton Reset
3.3V TOL
- Selects 3.3V Input Tolerance
3.3V
RST
(*RST) - 3.3V Reset Output
3.3V
IN
- 3.3V Power Supply Input
*DS1834D Active High Reset
DESCRIPTION
The DS1834 Dual EconoResets monitors three vital system conditions: 5-volt supply, 3.3-volt supply,
and an external override. First a precision temperature reference and comparator circuit monitor the status
of the 5-volt supply and the 3.3-volt supply. When an out-of-tolerance condition is detected, an internal
power-fail signal is generated which forces the reset of the affected supply to an active state.
Lastly, the DS1834 supports an external reset via an internally debounced pushbutton input. When the
pushbutton is pulled low both resets will be asserted for approximately 350 ms after the pushbutton is
released.
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DS1834AS+T&R Related Products

DS1834AS+T&R DS1834AS+
Description Power Supply Support Circuit, Fixed, 2 Channel, +2.55/2.88VV, CMOS, PDSO8, 0.150 INCH, ROHS COMPLIANT, SOIC-8 Power Supply Support Circuit, Fixed, 2 Channel, +2.55/2.88VV, CMOS, PDSO8, 0.150 INCH, ROHS COMPLIANT, SOIC-8
Is it lead-free? Lead free Lead free
Is it Rohs certified? conform to conform to
Parts packaging code SOIC SOIC
package instruction SOP, SOP8,.25 SOP, SOP8,.25
Contacts 8 8
Reach Compliance Code compli compliant
ECCN code EAR99 EAR99
Factory Lead Time 6 weeks 6 weeks
Other features PUSHBUTTON RESET PUSHBUTTON RESET
Adjustable threshold NO NO
Analog Integrated Circuits - Other Types POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code R-PDSO-G8 R-PDSO-G8
JESD-609 code e3 e3
length 4.9 mm 4.9 mm
Humidity sensitivity level 1 1
Number of channels 2 2
Number of functions 1 1
Number of terminals 8 8
Maximum operating temperature 85 °C 85 °C
Minimum operating temperature -40 °C -40 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SOP SOP
Encapsulate equivalent code SOP8,.25 SOP8,.25
Package shape RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) 260 260
power supply 1.2/5.5 V 1.2/5.5 V
Certification status Not Qualified Not Qualified
Maximum seat height 1.75 mm 1.75 mm
Maximum supply current (Isup) 0.05 mA 0.05 mA
Maximum supply voltage (Vsup) 5.5 V 5.5 V
Minimum supply voltage (Vsup) 1.2 V 1.2 V
Nominal supply voltage (Vsup) 3.3 V 3.3 V
surface mount YES YES
technology CMOS CMOS
Temperature level INDUSTRIAL INDUSTRIAL
Terminal surface Matte Tin (Sn) Matte Tin (Sn)
Terminal form GULL WING GULL WING
Terminal pitch 1.27 mm 1.27 mm
Terminal location DUAL DUAL
Threshold voltage nominal +2.55/2.88V +2.55/2.88V
Maximum time at peak reflow temperature NOT SPECIFIED NOT SPECIFIED
width 3.9 mm 3.9 mm
Base Number Matches 1 1
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