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ADM6711SAKS-REEL7 |ADM6711SAKSREEL7ADIN/a3002avaiMicroprocessor Supervisory Circuit in 4-Lead SC70, Active-Low Push-Pull Output
ADM6711SAKSZ-REEL7 |ADM6711SAKSZREEL7ADN/a6930avaiMicroprocessor Supervisory Circuit in 4-Lead SC70, Active-Low Push-Pull Output
ADM6711TAKSZ-REEL7 |ADM6711TAKSZREEL7ADIN/a3478avaiMicroprocessor Supervisory Circuit in 4-Lead SC70, Active-Low Push-Pull Output
ADM6711TAKSZ-REEL7 |ADM6711TAKSZREEL7ADN/a13avaiMicroprocessor Supervisory Circuit in 4-Lead SC70, Active-Low Push-Pull Output
ADM6711TAKSZ-REEL-7 |ADM6711TAKSZREEL7ADIN/a230avaiMicroprocessor Supervisory Circuit in 4-Lead SC70, Active-Low Push-Pull Output
ADM6713ZAKS-REEL7 |ADM6713ZAKSREEL7ADN/a436avaiMicroprocessor Supervisory Circuit in 4-Lead SC70, Active-Low Open-Drain Output


ADM6711SAKSZ-REEL7 ,Microprocessor Supervisory Circuit in 4-Lead SC70, Active-Low Push-Pull Outputapplications.debounced manual reset input so that a reset signal can also beinitiated with an exter ..
ADM6711TAKSZ-REEL7 ,Microprocessor Supervisory Circuit in 4-Lead SC70, Active-Low Push-Pull OutputAPPLICATIONSVCCMicroprocessor SystemsRESET RESETGENERATORComputers VREF240 msControllersIntelligent ..
ADM6711TAKSZ-REEL7 ,Microprocessor Supervisory Circuit in 4-Lead SC70, Active-Low Push-Pull OutputGENERAL DESCRIPTIONThe parts are highly reliable with accurate voltage referencesThe ADM6711/ADM671 ..
ADM6711TAKSZ-REEL-7 ,Microprocessor Supervisory Circuit in 4-Lead SC70, Active-Low Push-Pull OutputMicroprocessor SupervisoryCircuit in 4-Lead SC70ADM6711/ADM6713
ADM6713ZAKS-REEL7 ,Microprocessor Supervisory Circuit in 4-Lead SC70, Active-Low Open-Drain OutputSPECIFICATIONS (V = Full Operating Range; T = T to T ; V Typ = 5 VCC A MIN MAX CCfor L/M, 3.3 ..
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ADM6711SAKS-REEL7-ADM6711SAKSZ-REEL7-ADM6711TAKSZ-REEL7-ADM6711TAKSZ-REEL-7-ADM6713ZAKS-REEL7
Microprocessor Supervisory Circuit in 4-Lead SC70, Active-Low Push-Pull Output
REV.0
Microprocessor Supervisory
Circuit in 4-Lead SC70
FUNCTIONAL BLOCK DIAGRAMS
FEATURES
Specified Over Temperature
Low Power Consumption (12 �A)
Precision Monitoring of 2.5 V, 3 V, 3.3 V, and 5 V Power
Supply Voltages
Reset Timeout Period of 140 ms (Min)
Manual Reset Input
Output Stages
Push-Pull RESET Output (ADM6711)
Open-Drain RESET Output (ADM6713)
Reset Assertion Down to 1 V VCC
Power Supply Glitch Immunity
4-Lead SC70 Package
APPLICATIONS
Microprocessor Systems
Computers
Controllers
Intelligent Instruments
Automotive Systems
Portable Instruments
GENERAL DESCRIPTION

The ADM6711/ADM6713 are reset generator circuits suitable
for use in microprocessor based systems. They provide a reset
signal on power-up, power-down, and whenever the supply volt-
age falls below a preset threshold. In addition, both parts have a
debounced manual reset input so that a reset signal can also be
initiated with an external switch or logic signal.
With six different reset threshold options available ranging from
2.32 V to 4.63 V, the ADM6711/ADM6713 are suitable for
monitoring 2.5 V, 3 V, 3.3 V, and 5 V supplies. A reset timeout
of at least 140 ms occurs when VCC rises above the threshold.
This gives the supply voltage time to stabilize before the micro-
processor starts up.
The ADM6711 has a push-pull output, so no additional external
components are needed. The ADM6713’s open-drain output
requires an external pull-up resistor, which can be connected to a
voltage higher than VCC, if desired.
The parts are highly reliable with accurate voltage references
and immunity to fast, negative-going transients on VCC. Low
current consumption and space-efficient 4-lead SC70 packaging
make the ADM6711/ADM6713 ideal for use in low power
portable applications.
Figure 1. Typical Operating Circuit
ADM6711/ADM6713–SPECIFICATIONS (VCC = Full Operating Range; TA = TMIN to TMAX; VCC Typ = 5 V
for L/M, 3.3 V for T/S, 3 V for R, and 2.5 V for Z models; unless otherwise noted.)

RESET OPEN-DRAIN OUTPUT
MANUAL RESET (MR)
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000V readily
accumulate on the human body and test equipment and can discharge without detection. Although the
ADM6711/ADM6713 feature proprietary ESD protection circuitry, permanent damage may occur on
devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are
recommended to avoid performance degradation or loss of functionality.
ABSOLUTE MAXIMUM RATINGS*

(TA = 25°C, unless otherwise noted.)
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V
RESET (Push-Pull) . . . . . . . . . . . . . . –0.3 V to (VCC + 0.3 V)
RESET (Open-Drain) . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V . . . . . . . . . . . . . . . . . . . . . . . . . . .–0.3 V to (VCC + 0.3 V)
Input Current
VCC, MR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 mA
Output Current
RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
Rate of Rise, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 V/µs
�JA Thermal Impedance, SC70 . . . . . . . . . . . . . . . . . 146°C/W
Operating Temperature Range . . . . . . . . . . –40°C to +125°C
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . . 300°C
*Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those listed in the operational
sections of this specification is not implied. Exposure to absolute maximum ratings
for extended periods of time may affect device reliability.
ORDERING GUIDE
Table I.RESET Threshold Options

ADM671_L
ADM671_M
ADM671_T
ADM671_S
ADM671_R
ADM6711/ADM6713
PIN CONFIGURATION
PIN FUNCTION DESCRIPTIONS

TPC 1.Supply Current vs. Temperature
TPC 2.Power-Down RESET Delay vs. Temperature
ADM671_R/S/T/Z
TPC 3.Power-Down RESET Delay vs. Temperature
ADM671_L/M
TPC 4.Power-Up Reset Timeout vs. Temperature
TPC 5.RESET Threshold Deviation vs. Temperature
TPC 6.Maximum Transient Duration without Causing a
RESET Pulse vs. RESET Comparator Overdrive
ADM6711/ADM6713
DETAILED DESCRIPTION

The ADM6711/ADM6713 are designed to protect the integrity
of a system’s operation by ensuring the proper operation of the
system during power-up, power-down, and brownout conditions.
When the ADM6711/ADM6713 are powered up, the RESET
output will remain low for a period equal to the typical reset
active timeout period. This is designed to give the system time
to power up correctly and for the power supply to stabilize
before any devices are brought out of reset and allowed to begin
executing instructions. Initializing a system in this way provides
a more reliable startup for microprocessor systems.
MANUAL RESET INPUT

The ADM6711/ADM6713’s manual reset (MR) input allows
the system operator to reset a system by means of an external
manual switch. Alternatively, a logic signal from another digital
circuit can be used to trigger a reset via the MR input.
The MR input will ignore negative-going pulses faster than
100 ns (typically) and is guaranteed to accept any negative-
going input pulse of a duration greater than or equal to 1 µs.
The RESET output will remain low while MR is held low and
for 240 ms (typically) after MR returns high.
If MR is connected to long cables or is used in a noisy environ-
ment, then placing a 0.1 µF capacitor between the MR input
and ground will help to remove any fast, negative-going transients.
POWER SUPPLY GLITCH IMMUNITY

The ADM6711/ADM6713 contain internal filtering circuitry
that provides immunity to fast transient glitches on the power
supply line. TPC 6 illustrates glitch immunity performance by
showing the maximum transient duration without causing a
reset pulse for glitches with amplitudes in the range of 1 mV to
1000 mV.
Glitch immunity makes the ADM6711/ADM6713 suitable for
use in noisy environments. Mounting a 0.1 µF decoupling
capacitor as close as possible to the VCC pin improves glitch
immunity further.
ADM6713 RESET OUTPUT LOGIC LEVELS

The ADM6713’s open-drain RESET output is designed for use
with an external pull-up resistor. This resistor can be tied to VCC
or any other reasonable voltage level, offering the flexibility to use
the ADM6713 to drive a variety of different logic level circuitry.
ENSURING A VALID RESET OUTPUT DOWN
TO VCC = 0 V

When VCC falls below 0.8 V, the ADM6711’s RESET output no
longer sinks current. Therefore, a high impedance CMOS logic
input connected to RESET may drift to undetermined logic
levels. To eliminate this problem, a pull-down resistor should be
connected from RESET to ground. A 100 kΩ resistor is large
enough not to load RESET and small enough to pull RESET
to ground.
Figure 2. Ensuring a Valid RESET Output Down
to VCC = 0 V
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