OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

MAX803SEXR+T

P1-P3P4-P6P7-P8
19-0344; Rev 8; 12/12
MAX803/MAX809/MAX810
3-Pin Microprocessor Reset Circuits
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
General Description
The MAX803/MAX809/MAX810 are microprocessor (µP)
supervisory circuits used to monitor the power supplies
in µP and digital systems. They provide excellent circuit
reliability and low cost by eliminating external compo-
nents and adjustments when used with +5V, +3.3V,
+3.0V, or +2.5V powered circuits.
These circuits perform a single function: they assert a
reset signal whenever the V
CC
supply voltage declines
below a preset threshold, keeping it asserted for at
least 140ms after V
CC
has risen above the reset thresh-
old. Reset thresholds suitable for operation with a vari-
ety of supply voltages are available.
The MAX803 has an open-drain output stage, while the
MAX809/MAX810 have push-pull outputs. The
MAX803’s open-drain RESET output requires a pullup
resistor that can be connected to a voltage higher than
V
CC
. The MAX803/MAX809 have an active-low RESET
output, while the MAX810 has an active-high RESET
output. The reset comparator is designed to ignore fast
transients on V
CC
, and the outputs are guaranteed to
be in the correct logic state for V
CC
down to 1V.
Low supply current makes the MAX803/MAX809/
MAX810 ideal for use in portable equipment. The
MAX803 is available in a 3-pin SC70 package, and the
MAX809/MAX810 are available in 3-pin SC70 or SOT23
packages.
Applications
Computers
Controllers
Intelligent Instruments
Critical µP and µC Power Monitoring
Portable/Battery-Powered Equipment
Automotive
____________________________Features
o Precision Monitoring of +2.5V, +3V, +3.3V, and
+5V Power-Supply Voltages
o Fully Specified Over Temperature
o Available in Three Output Configurations
Open-Drain RESET Output (MAX803)
Push-Pull RESET Output (MAX809)
Push-Pull RESET Output (MAX810)
o 140ms min Power-On Reset Pulse Width
o 12µA Supply Current
o Guaranteed Reset Valid to V
CC
= +1V
o Power Supply Transient Immunity
o No External Components
o 3-Pin SC70 and SOT23 Packages
TOP VIEW
RESET (RESET)
1
GND
V
CC
MAX803
MAX809
MAX810
SC70-3/SOT23-3
2
3
( ) ARE FOR MAX810.
MAX803 AVAILABLE IN SC70-3 ONLY.
MAX803
MAX809
V
CC
V
CC
R
PULLUP
*
RESET
RESET
INPUT
GND
V
CC
GND
*MAX803 ONLY
µP
Pin Configuration
Typical Operating Circuit
Note:
These parts are offered in 2.5k reels, and must be
ordered in 2.5k increments. Insert the desired suffix letter from
the Selector Guide into the blank to complete the part number.
All versions of these products may not be available at the time
of announcement. Contact factory for availability.
Devices are available in both leaded and lead-free packaging.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part.
Ordering Information
PART TEMP RANGE PIN-PACKAGE
MAX803_EXR-T -40°C to +125°C 3 SC70
MAX803_EXR+T -40°C to +125°C 3 SC70
MAX803_EXR/V+ -40°C to +125°C 3 SC70
MAX809_EXR-T -40°C to +125°C 3 SC70
MAX809_EXR+T -40°C to +125°C 3 SC70
MAX809_EUR-T -40°C to +105°C 3 SOT23
MAX809_EUR+T -40°C to +105°C 3 SOT23
MAX810_EXR-T -40°C to +125°C 3 SC70
MAX810_EXR+T -40°C to +125°C 3 SC70
MAX810_EUR-T -40°C to +105°C 3 SOT23
MAX810_EUR+T -40°C to +105°C 3 SOT23
MAX803/MAX809/MAX810
3-Pin Microprocessor Reset Circuits
2
Maxim Integrated
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
CC
= full range, T
A
= -40°C to +105°C (SOT23) or T
A
= -40°C to +125°C (SC70), unless otherwise noted. Typical values are at T
A
=
+25°C, V
CC
= 5V for L/M/J versions, V
CC
= 3.3V for T/S versions, V
CC
= 3V for R version, and V
CC
= 2.5V for Z version.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Terminal Voltage (with respect to GND)
V
CC
....................................................................-0.3V to +6.0V
RESET, RESET (push-pull) .....................-0.3V to (V
CC
+ 0.3V)
RESET (open drain)...........................................-0.3V to +6.0V
Input Current, V
CC
..............................................................20mA
Output Current, RESET, RESET ..........................................20mA
Rate of Rise, V
CC
............................................................100V/µs
Continuous Power Dissipation (T
A
= +70°C)
3-Pin SC70 (derate 2.17mW/°C above +70°C)............174mW
3-Pin SOT23 (derate 4mW/°C above +70°C)...............320mW
Operating Temperature Range
3-Pin SC70.....................................................-40°C to +125°C
3-Pin SOT23...................................................-40°C to +105°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
T
A
= 0°C to +70°C 1.0 5.5
T
A
= -40°C to +105°C (MAX8_ _ _EUR) 1.2 5.5
V
CC
Range
T
A
= -40°C to +125°C (MAX8_ _ _EXR) 1.2 5.5
V
V
CC
< 5.5V, MAX8_ _L/M 24 60
T
A
= -40°C
to +85°C
V
CC
< 3.6V, MAX8_ _R/S/T/Z 17 50
V
CC
< 5.5V, MAX8_ _L/M 100
Supply Current (SOT23) I
CC
T
A
= +85°C
to +105°C
V
CC
< 3.6V, MAX8_ _R/S/T/Z 100
V
CC
< 5.5V, MAX8_ _L/M 24 35
T
A
= -40°C
to +85°C
V
CC
< 3.6V, MAX8_ _R/S/T/Z 17 30
V
CC
< 5.5V, MAX8_ _L/M 60
Supply Current (SC70) I
CC
T
A
= +85°C
to +125°C
V
CC
< 3.6V, MAX8_ _R/S/T/Z 60
µA
T
A
= +25°C 4.56 4.63 4.70
T
A
= -40°C to +85°C 4.50 4.75
MAX8_ _L
T
A
= -40°C to +125°C 4.40 4.86
T
A
= +25°C 4.31 4.38 4.45
T
A
= -40°C to +85°C 4.25 4.50
MAX8_ _M
T
A
= -40°C to +125°C 4.16 4.56
T
A
= +25°C 3.93 4.00 4.06
T
A
= -40°C to +85°C 3.89 4.10
MAX809J
(SOT only)
T
A
= -40°C to +125°C 3.80 4.20
T
A
= +25°C 3.04 3.08 3.11
T
A
= -40°C to +85°C 3.00 3.15
MAX8_ _T
T
A
= -40°C to +125°C 2.92 3.23
T
A
= +25°C 2.89 2.93 2.96
T
A
= -40°C to +85°C 2.85 3.00
MAX8_ _S
T
A
= -40°C to +125°C 2.78 3.08
T
A
= +25°C 2.59 2.63 2.66
T
A
= -40°C to +85°C 2.55 2.70
Reset Threshold
(SOT only)
V
TH
MAX8_ _R
T
A
= -40°C to +125°C 2.50 2.76
V
MAX803/MAX809/MAX810
3-Pin Microprocessor Reset Circuits
3
Maxim Integrated
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= full range, T
A
= -40°C to +105°C (SOT23) or T
A
= -40°C to +125°C (SC70), unless otherwise noted. Typical values are at T
A
=
+25°C, V
CC
= 5V for L/M/J versions, V
CC
= 3.3V for T/S versions, V
CC
= 3V for R version, and V
CC
= 2.5V for Z version.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
T
A
= +25°C 4.56 4.63 4.70
T
A
= -40°C to +85°C 4.50 4.75
MAX8_ _L
T
A
= -40°C to +125°C 4.44 4.82
T
A
= +25°C 4.31 4.38 4.45
T
A
= -40°C to +85°C 4.25 4.50
MAX8_ _M
T
A
= -40°C to +125°C 4.20 4.56
T
A
= +25°C 3.04 3.08 3.11
T
A
= -40°C to +85°C 3.00 3.15
MAX8_ _T
T
A
= -40°C to +125°C 2.95 3.21
T
A
= +25°C 2.89 2.93 2.96
T
A
= -40°C to +85°C 2.85 3.00
MAX8_ _S
T
A
= -40°C to +125°C 2.81 3.05
T
A
= +25°C 2.59 2.63 2.66
T
A
= -40°C to +85°C 2.55 2.70
MAX8_ _R
T
A
= -40°C to +125°C 2.52 2.74
T
A
= +25°C 2.28 2.32 2.35
T
A
= -40°C to +85°C 2.25 2.38
Reset Threshold
(SC70 only)
V
TH
MAX8_ _Z
(SC70 only)
T
A
= -40°C to +125°C 2.22 2.42
V
Reset Threshold Tempco 30 ppm/°C
V
CC
to Reset Delay (Note 2) V
CC
= V
TH
to (V
TH
- 100mV) 20 µs
T
A
= -40°C to +85°C 140 240 560
Reset Active Timeout Period
(SOT23)
T
A
= +85°C to +105°C 100 840
ms
T
A
= -40°C to +85°C 140 240 460
Reset Active Timeout Period
(SC70)
T
A
= +85°C to +125°C 100 840
ms
V
CC
= V
TH
min, I
SINK
= 1.2mA,
MAX803R/S/T/Z, MAX809R/S/T/Z
0.3
V
CC
= V
TH
min, I
SINK
= 3.2mA,
MAX803L/M, MAX809J/L/M
0.4
RESET Output Voltage Low
(push-pull active low and open-
drain active low, MAX803 and
MAX809)
V
OL
V
CC
> 1.0V, I
SINK
= 50µA 0.3
V
V
CC
> V
TH
max, I
SOURCE
= 500µA,
MAX803R/S/T/Z, MAX809R/S/T/Z
0.8V
CC
RESET Output Voltage High
(push-pull active low MAX809)
V
OH
V
CC
> V
TH
max, I
SOURCE
= 800µA,
MAX803L/M, MAX809J/L/M
V
CC
- 1.5
V
V
CC
= V
TH
max, I
SINK
= 1.2mA,
MAX810R/S/T/Z
0.3
RESET Output Voltage Low
(push-pull active high, MAX810)
V
OL
V
CC
= V
TH
max, I
SINK
= 3.2mA,
MAX810L/M
0.4
V
P1-P3P4-P6P7-P8

MAX803SEXR+T

Mfr. #:
Buy MAX803SEXR+T
Manufacturer:
Maxim Integrated
Description:
Supervisory Circuits 3-Pin MPU Supervisor
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet