ADM1818-10ART-REEL ,Microprocessor Reset CircuitsFEATURES FUNCTIONAL BLOCK DIAGRAMSReliable Low Cost Voltage Monitor with Reset OutputSupports Monit ..
ADM1818-10ART-RL7 ,Microprocessor Reset CircuitsAPPLICATIONSMicroprocessor SystemsADM1812/ADM1817ComputersVCCControllersRSTIntelligent InstrumentsV ..
ADM1818-20AKS-RL7 ,Microprocessor Supervisory in SOT-23 with Manual Push Button OptionSPECIFICATIONS(V = Full Operating Range, T = –40C to +105C, unless otherwise noted.)CC AParameter ..
ADM1818-20ART-REEL ,Microprocessor Reset CircuitsGENERAL DESCRIPTIONThe ADM181x range of voltage monitoring circuits can be usedADM1813/ADM1818in an ..
ADM1818-20ART-RL7 ,Microprocessor Reset CircuitsFEATURES FUNCTIONAL BLOCK DIAGRAMSReliable Low Cost Voltage Monitor with Reset OutputSupports Monit ..
ADM1818-5ART-REEL7 , Microprocessor Reset Circuits
AH49E , LINEAR HALL-EFFECT IC
AH5010CN ,30 V, 500 mW, monolithic analog current switchFeatures
I Interfaces with standard TTL and CMOS
I "ON" resistance match
I Low "ON" resist ..
AH5011CN ,30 V, 500 mW, monolithic analog current switchElectrical Characteristics AH5010 and AH5012 (Notes 2 and 3)
Symbol
lesx
ID(0FF) I Leakage C ..
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I A/D and D/A converters
I Micropower converters
I Industrial controllers
I Po ..
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A versatile family of monolithic JFET analog switches eco-
nomically fulfil ..
AH5020CJ ,monolithic analog current switchFeatures
I Interfaces with standard TTL
I "ON" resistance match 2n
I Low "ON" resistance 1 ..
ADM1810-10ART-RL7-ADM1811-10ART-RL7-ADM1811-5ART-RL7-ADM1812-10ART-REEL-ADM1813-10ART-RL7-ADM1813-5ART-RL7-ADM1815-10ART-RL7-ADM1815-20ART-RL7-ADM1816-10ART-RL7-ADM1818-10ART-REEL-ADM1818-10ART-RL7-ADM1818-20ART-REEL-ADM1818-20ART-RL7
Microprocessor Reset Circuits
REV.0
Microprocessor Reset Circuits
FUNCTIONAL BLOCK DIAGRAMS
FEATURES
Reliable Low Cost Voltage Monitor with Reset Output
Supports Monitoring of Supplies Within 5%, 10%, 15%
and 20% Tolerance
Active High and Low Push-Pull Output Choices
(ADM1810, ADM1812, ADM1815 and ADM1817)
Open Drain Output Choices (ADM1811, ADM1813,
ADM1816 and ADM1818)
Can Be Used with a Manual Push-Button to Generate a
Reset (ADM1813, ADM1818)
Initialize Microprocessor Systems with Added Safety
APPLICATIONS
Microprocessor Systems
Computers
Controllers
Intelligent Instruments
Automotive Systems
GENERAL DESCRIPTIONThe ADM181x range of voltage monitoring circuits can be used
in any application where an electronic system needs to be reset
when a voltage increases above or below a predetermined value.
Because of the “reset delay time” incorporated into the ADM181x
series, these devices can provide a safe startup for electronic
systems. Before a system initializes, the power supply must stabi-
lize. Using the ADM181x series ensures that there are typically
150 ms for the power supply to stabilize before the system is
reset and safe system initialization begins.
The ADM181x series of microprocessor reset circuits are avail-
able in low cost, space-saving SOT-23 packages.
ADM1810–ADM1813/ADM1815–ADM1818–SPECIFICATIONS
(TA = –408C to +858C unless otherwise noted)OUTPUT CURRENT
OUTPUT VOLTAGE
INTERNAL PULL-UP RESISTOR
NOTES
*For ADM181x-20, VCC = VCCTP, sink current reduces to 8 mA.
Specifications subject to change without notice.
ORDERING GUIDENOTES
RL7 or REEL7 are in reels of 3000 parts. REEL are in reels of 10000 parts.
All models in bold are ex-stock. Consult factory for availability.
*Only Available in Reels.
ABSOLUTE MAXIMUM RATINGS*VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +1.2 V to +5.5 V
Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 mA
Operating Temperature Range . . . . . . . . . . . –40°C to +85°C
Power Dissipation, RT-3, SOT-23 . . . . . . . . . . . . . . 320 mW
Derate by 4 mW/°C Above +70°CJA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . 333°C/W
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . +300°C
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . +215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . +220°C
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 kV
*Typical values are measured at TA = +25°C unless otherwise noted.
PIN CONFIGURATION
PIN FUNCTION DESCRIPTIONS
VCC
DELAYRSTFigure 1.Power-Down Timing Diagram
Figure 2.Power-Up Timing Diagram
ADM1810–ADM1813/ADM1815–ADM1818C3459–8–3/99
PRINTED IN U.S.A.
ADM1813 AND ADM1818The ADM1813 and ADM1818 are low cost voltage monitoring
devices with the inclusion of an optional push-button reset
function.
VCCFigure 3.ADM1813/ADM1818 Typical Application
An optional push-button reset switch can be connected be-
tween RST and ground. Pressing this switch will pull the reset
output low. If the push-button reset button pulls the RST
output low for a period greater than 1 ms, then, when the reset
button releases the RST line to float high, the RST line will
stay low for a further 150 ms typical.
Figure 4.Push-Button Reset Timing Diagram
The ADM1818 range has options which allow the user to
monitor 3.3 V supplies with 10% and 20% tolerance options.
While the ADM1813 range has options which allow the user
to monitor 5 V supplies with 5%, 10% and a 15% tolerance
options.
ADM1810, ADM1812, ADM1815 AND ADM1817The ADM1812 is a 5 V low cost voltage monitor with an active
high push-pull output. The ADM1812 supports 5%, 10% and
15% tolerances. The ADM1810 is similar to the ADM1812,
except that the ADM1810 has an active low push-pull output.
The ADM1817 is 3.3 V voltage monitor with an active high
push-pull output. The ADM1817 supports 5%, 10% and 20%
tolerances. The ADM1815 is similar to the ADM1817, except
that the ADM1815 has an active low push-pull output.
The ADM1810/ADM1812/ADM1815/ADM1817 can be con-
nected directly to most microprocessor-reset inputs without the
need for external components.
ADM1810/
ADM1812/
ADM1815/
ADM1817
VCC
RST/
RST
VCC
MICRO-
PROCESSOR
RESET
OUTLINE DIMENSIONSDimensions shown in inches and (mm).
3-Lead Plastic Surface Mount Package (SOT-23)
(RT-3)
0.1200 (3.048)
0.1102 (2.799)
PIN 1
0.0550 (1.397)
0.0470 (1.194)
0.0236 (0.599)
0.0177 (0.450)
0.1040 (2.642)
0.0827 (2.101)
0.0413 (1.049)
0.0374 (0.950)
0.0807 (2.050)
0.0701 (1.781)
SEATING
PLANE
0.0440 (1.118)
0.0320 (0.813)0.0040 (0.102)
0.0005 (0.013)
0.0210 (0.533)
0.0146 (0.371)
0.027 (0.686)
REF
0.0059 (0.150)
0.0034 (0.086)
0.0100 (0.254)
0.0050 (0.127)
ADM1811 AND ADM1816The ADM1811 is a low cost voltage monitor with an open drain
output. The ADM1811 is designed to monitor 5 V supplies.
The ADM1811 range comes in three different variants which
allow the monitoring of a 5 V supply with a tolerance of 5%,
10% and 15%. The ADM1816 is a 3.3 V version of the ADM1811
and supports 5%, 10% and 20% tolerance options.
VCCFigure 6.ADM1811/ADM1816 Typical Application
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