MAX809 Series,
MAX810 Series
Very Low Supply Current
3-Pin Microprocessor
Reset Monitors
The MAX809 and MAX810 are cost−effective system supervisor
circuits designed to monitor V
CC
in digital systems and provide a reset
signal to the host processor when necessary. No external components
are required.
The reset output is driven active within 10
msec
of V
CC
falling
through the reset voltage threshold. Reset is maintained active for a
timeout period which is trimmed by the factory after V
CC
rises above
the reset threshold. The MAX810 has an active−high RESET output
while the MAX809 has an active−low RESET output. Both devices
are available in SOT−23 and SC−70 packages.
The MAX809/810 are optimized to reject fast transient glitches on
the V
CC
line. Low supply current of 0.5
mA
(V
CC
= 3.2 V) makes these
devices suitable for battery powered applications.
Features
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MARKING
DIAGRAM
3
1
2
SOT−23
(TO−236)
CASE 318
3
xxx MG
G
1
2
SC−70
(SOT−323)
CASE 419
1
xx MG
G
•
Precision V
CC
Monitor for 1.5 V, 2.5 V, 3.0 V, 3.3 V, and 5.0 V
•
•
•
•
•
•
•
•
•
•
•
•
•
Supplies
Precision Monitoring Voltages from 1.2 V to 4.9 V Available
in 100 mV Steps
Four Guaranteed Minimum Power−On Reset Pulse Width Available
(1 ms, 20 ms, 100 ms, and 140 ms)
RESET Output Guaranteed to V
CC
= 1.0 V.
Low Supply Current
Compatible with Hot Plug Applications
V
CC
Transient Immunity
No External Components
Wide Operating Temperature:
−40°C
to 105°C
Pb−Free Packages are Available
Computers
Embedded Systems
Battery Powered Equipment
Critical Microprocessor Power Supply Monitoring
V
CC
V
CC
MAX809/810
RESET
RESET
GND
V
CC
PROCESSOR
RESET
INPUT
GND
xxx
= Specific Device Code
M
= Date Code
G
= Pb−Free Package
(Note: Microdot may be in either location)
PIN CONFIGURATION
GND
1
3
RESET
RESET
2
SOT−23/SC−70
(Top View)
NOTE:
V
CC
Typical Applications
RESET is for MAX809
RESET is for MAX810
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 10 of this data sheet.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 10 of this data sheet.
Figure 1. Typical Application Diagram
©
Semiconductor Components Industries, LLC, 2010
April, 2010
−
Rev. 20
1
Publication Order Number:
MAX809S/D
MAX809 Series, MAX810 Series
3
V
CC
Timeout
Counter
V
CC
Oscillator
2
RESET
Vref
1 GND
Figure 2. MAX809 Series Complementary Active−Low Output
3
V
CC
Timeout
Counter
V
CC
Oscillator
2
RESET
Vref
1 GND
Figure 3. MAX810 Series Complementary Active−High Output
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2
MAX809 Series, MAX810 Series
PIN DESCRIPTION
Pin No.
1
2
2
3
Symbol
GND
RESET (MAX809)
RESET (MAX810)
V
CC
Ground
RESET output remains low while V
CC
is below the reset voltage threshold, and for a reset timeout
period after V
CC
rises above reset threshold
RESET output remains high while V
CC
is below the reset voltage threshold, and for a reset timeout
period after V
CC
rises above reset threshold
Supply Voltage (Typ)
Description
ABSOLUTE MAXIMUM RATINGS
Rating
Power Supply Voltage (V
CC
to GND)
RESET Output Voltage (CMOS)
Input Current, V
CC
Output Current, RESET
dV/dt (V
CC
)
Thermal Resistance, Junction−to−Air (Note 1)
Operating Junction Temperature Range
Storage Temperature Range
Lead Temperature (Soldering, 10 Seconds)
ESD Protection
Human Body Model (HBM): Following Specification JESD22−A114
Machine Model (MM): Following Specification JESD22−A115
Latchup Current Maximum Rating: Following Specification JESD78 Class II
Positive
Negative
I
Latchup
SOT−23
SC−70
R
qJA
T
J
T
stg
T
sol
Symbol
V
CC
Value
−0.3
to 6.0
−0.3
to (V
CC
+ 0.3)
20
20
100
301
314
−40
to +105
−65
to +150
+260
2000
200
200
200
Unit
V
V
mA
mA
V/msec
°C/W
°C
°C
°C
V
mA
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. This based on a 35x35x1.6mm FR4 PCB with 10mm
2
of 1 oz copper traces under natural convention conditions and a single component
characterization.
2. The maximum package power dissipation limit must not be exceeded.
TJ(max)
*
TA
with T
J(max)
= 150°C
PD
+
R
qJA
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3
MAX809 Series, MAX810 Series
ELECTRICAL CHARACTERISTICS
T
A
=
−40°C
to +105°C unless otherwise noted. Typical values are at T
A
= +25°C. (Note 3)
Characteristic
V
CC
Range
T
A
= 0°C to +70°C
T
A
=
−40°C
to +105°C
Supply Current
V
CC
= 3.3 V
T
A
=
−40°C
to +85°C
T
A
= 85°C to +105°C
V
CC
= 5.5 V
T
A
=
−40°C
to +85°C
T
A
= 85°C to +105°C
Reset Threshold (V
in
Decreasing) (Note 4)
MAX809SN490
T
A
= +25°C
T
A
=
−40°C
to +85°C
T
A
= +85°C to +105°C
MAX8xxLTR, MAX8xxSQ463
T
A
= +25°C
T
A
=
−40°C
to +85°C
T
A
= +85°C to +105°C
MAX809HTR
T
A
= +25°C
T
A
=
−40°C
to +85°C
T
A
= +85°C to +105°C
MAX8xxMTR, MAX8xxSQ438
T
A
= +25°C
T
A
=
−40°C
to +85°C
T
A
= +85°C to +105°C
MAX809JTR, MAX8xxSQ400
T
A
= +25°C
T
A
=
−40°C
to +85°C
T
A
= +85°C to +105°C
MAX8xxTTR, MAX809SQ308
T
A
= +25°C
T
A
=
−40°C
to +85°C
T
A
= +85°C to +105°C
MAX8xxSTR, MAX8xxSQ293
T
A
= +25°C
T
A
=
−40°C
to +85°C
T
A
= +85°C to +105°C
MAX8xxRTR, MAX8xxSQ263
T
A
= +25°C
T
A
=
−40°C
to +85°C
T
A
= +85°C to +105°C
MAX809SN232, MAX809SQ232
T
A
= +25°C
T
A
=
−40°C
to +85°C
T
A
= +85°C to +105°C
MAX809SN160
T
A
= +25°C
T
A
=
−40°C
to +85°C
T
A
= +85°C to +105°C
MAX809SN120, MAX8xxSQ120
T
A
= +25°C
T
A
=
−40°C
to +85°C
T
A
= +85°C to +105°C
3. Production testing done at T
A
= 25°C, over temperature limits guaranteed by design.
4. Contact your ON Semiconductor sales representative for other threshold voltage options.
I
CC
−
−
−
−
V
TH
4.83
4.78
4.66
4.56
4.50
4.40
4.48
4.43
4.32
4.31
4.27
4.16
3.94
3.90
3.80
3.04
3.00
2.92
2.89
2.85
2.78
2.59
2.56
2.49
2.28
2.25
2.21
1.58
1.56
1.52
1.18
1.17
1.14
4.9
−
−
4.63
−
−
4.55
4.97
5.02
5.14
4.70
4.75
4.86
4.62
4.67
4.78
4.45
4.49
4.60
4.06
4.10
4.20
3.11
3.16
3.24
2.96
3.00
3.08
2.66
2.70
2.77
2.35
2.38
2.45
1.62
1.64
1.68
1.22
1.23
1.26
0.5
−
0.8
−
1.2
2.0
1.8
2.5
V
Symbol
Min
1.0
1.2
Typ
−
−
Max
5.5
5.5
Unit
V
mA
4.38
4.00
−
−
3.08
−
−
2.93
−
−
2.63
−
−
2.32
−
−
1.60
−
−
1.20
−
−
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4
MAX809 Series, MAX810 Series
ELECTRICAL CHARACTERISTICS
(continued)
T
A
=
−40°C
to +105°C unless otherwise noted. Typical values are at
T
A
= +25°C. (Note 5)
Characteristic
Detector Voltage Threshold Temperature Coefficient
V
CC
to Reset Delay V
CC
= V
TH
to (V
TH
−
100 mV)
Reset Active TimeOut Period (Note 6)
MAX8xxSN(Q)293D1
MAX8xxSN(Q)293D2
MAX8xxSN(Q)293D3
MAX8xxSN(Q)293
RESET Output Voltage Low (No Load) (MAX809)
V
CC
= V
TH
−
0.2 V
1.6 V
v
V
TH
v
2.0 V, I
SINK
= 0.5 mA
2.1 V
v
V
TH
v
4.0 V, I
SINK
= 1.2 mA
4.1 V
v
V
TH
v
4.9 V, I
SINK
= 3.2 mA
RESET Output Voltage High (No Load) (MAX809)
V
CC
= V
TH
+ 0.2 V
1.6 V
v
V
TH
v
2.4 V, I
SOURCE
= 200
mA
2.5 V
v
V
TH
v
4.9 V, I
SOURCE
= 500
mA
RESET Output Voltage High (No Load) (MAX810)
V
CC
= V
TH
+ 0.2 V
1.6 V
v
V
TH
v
2.4 V, I
SOURCE
= 200
mA
2.5 V
v
V
TH
v
4.9 V, I
SOURCE
= 500
mA
RESET Output Voltage Low (No Load) (MAX810)
V
CC
= V
TH
−
0.2 V
1.6 V
v
V
TH
v
2.0 V, I
SINK
= 0.5 mA
2.1 V
v
V
TH
v
4.0 V, I
SINK
= 1.2 mA
4.1 V
v
V
TH
v
4.9 V, I
SINK
= 3.2 mA
t
RP
Symbol
Min
−
−
1.0
20
100
140
−
Typ
30
10
−
−
−
−
−
Max
−
−
3.3
66
330
460
0.3
Unit
ppm/°C
msec
msec
V
OL
V
V
OH
0.8 V
CC
−
−
V
V
OH
0.8 V
CC
−
−
V
V
OL
−
−
0.3
V
5. Production testing done at T
A
= 25°C, over temperature limits guaranteed by design.
6. Contact your ON Semiconductor sales representative for timeout options availability for other threshold voltage options.
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