2024年7月11日发(作者：次岚霏)
元器件交易网
MAX809,MAX810
3-PinMicroprocessor
ResetMonitors
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 20 µsec of V
CC
falling
through the reset voltage threshold. Reset is maintained active for a
minimum of 140msec 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. The output of the MAX809 is
guaranteed valid down to V
CC
= 1V. Both devices are available in a
SOT–23 package.
The MAX809/810 are optimized to reject fast transient glitches on
the V
CC
line. Low supply current of 17µA (V
CC
= 3.3V) makes these
devices suitable for battery powered applications.
Features
•
Precision V
CC
Monitor for 3.0V, 3.3V, and 5.0V Supplies
•
140msec Guaranteed Minimum RESET, RESET
Output Duration
•
RESET Output Guaranteed to V
CC
= 1.0V (MAX809)
•
Low 17µA Supply Current
•
V
CC
Transient Immunity
•
Small SOT–23 Package
•
No External Components
•
Wide Operating Temperature: –40°C to 85°C
Typical Applications
•
Computers
•
Embedded Systems
•
Battery Powered Equipment
•
Critical µP Power Supply Monitoring
TYPICAL APPLICATION DIAGRAM
V
CC
V
CC
MAX809
RESET
V
CC
PROCESSOR
RESET
INPUT
GND
SOT–23
(TO–236)
CASE 318
PIN CONFIGURATION
(Top View)
GND
1
3
RESET
(RESET)**
V
CC
2
SOT–23*
NOTE:*SOT–23 is equivalent to JEDEC (TO–236)
** RESET is for MAX809
** RESET is for MAX810
ORDERING INFORMATION
Device
MAX809xTR
MAX810xTR
Package
SOT–23
SOT–23
Shipping
3000 Tape/Reel
3000 Tape/Reel
NOTE: The ”x” denotes a suffix for V
CC
threshold –
see table below
Suffix
L
M
J*
T
S
R
Reset V
CC
Threshold (V)
4.63
4.38
4.00
3.08
2.93
2.63
GND
NOTE: *J version is available for MAX809 only
© Semiconductor Components Industries, LLC, 1999
1
February, 2000 – Rev. 2
Publication Order Number:
MAX809/D
元器件交易网
MAX809, MAX810
ABSOLUTE MAXIMUM RATINGS*
SymbolParameter
Supply Voltage (V
CC
to GND)
RESET, RESET
Input Current, V
CC
Output Current, RESET, RESET
dV/dt (V
CC
)
P
D
T
A
T
stg
T
sol
Power Dissipation (T
A
≤ 70°C)
SOT–23 (derate 4mW/°C above +70°C)
Operating Temperature Range
Storage Temperature Range
Lead Temperature (Soldering, 10 Seconds)
Value
6.0
–0.3 to (V
CC
+ 0.3)
20
20
100
230
–40 to +85
–65 to +150
+260
°C
°C
°C
Unit
V
V
mA
mA
V/µsec
mW
* Maximum Ratings are those values beyond which damage to the device may occur.
2
元器件交易网
MAX809, MAX810
ELECTRICAL CHARACTERISTICS (V
CC
= Full Range, T
A
=
–40°C to +85°C unless otherwise noted
. typical values are at T
A
= +25C, V
CC
= 5V for L/M/J, 3.3V for T/S, 3.0V for R)
(Note NO TAG)
Symbol
V
CC
Range
T
A
= 0°C to +70°C
T
A
= –40°C to +85°C
I
CC
Supply Current
MAX8xxL/M/J: V
CC
< 5.5V
MAX8xxR/S/T: V
CC
< 3.6V
Reset Threshold (Note NO TAG)
MAX8xxL: T
A
= 25°C
T
A
= –40°C to +85°C
MAX8xxM: T
A
= 25°C
T
A
= –40°C to +85°C
MAX809J: T
A
= 25°C
T
A
= –40°C to +85°C
MAX8xxT: T
A
= 25°C
T
A
= –40°C to +85°C
MAX8xxS: T
A
= 25°C
T
A
= –40°C to +85°C
MAX8xxR: T
A
= 25°C
T
A
= –40°C to +85°C
Reset Threshold Temperature Coefficient
V
CC
to Reset Delay V
CC
= V
TH
to (V
TH
– 100mV)
Reset Active Timeout Period
V
OL
RESET Output Voltage Low (MAX809)
MAX809R/S/T: V
CC
= V
TH
min, I
SINK
= 1.2mA
MAX809L/M/J: V
CC
= V
TH
min, I
SINK
= 3.2mA
V
CC
> 1.0V, I
SINK
= 50µA
RESET Output Voltage High (MAX809)
MAX809R/S/T: V
CC
> V
TH
max, I
SOURCE
= 500µA
MAX809L/M/J: V
CC
> V
TH
max, I
SOURCE
= 800µA
RESET Output Voltage Low (MAX810)
MAX810R/S/T: V
CC
= V
TH
max, I
SINK
= 1.2mA
MAX810L/M/J: V
CC
= V
TH
max, I
SINK
= 3.2mA
RESET Output Voltage High (MAX810)
1.8 < V
CC
< V
TH
min, I
SOURCE
= 150µA
CharacteristicMin
1.0
1.2
—
—
4.56
4.50
4.31
4.25
3.93
3.89
3.04
3.00
2.89
2.85
2.59
2.55
—
—
140
—
—
—
0.8 V
CC
V
CC
– 1.5
—
—
0.8 V
CC
Typ
—
—
24
17
4.63
—
4.38
—
4.00
—
3.08
—
2.93
—
2.63
—
30
20
240
—
—
—
—
—
—
—
—
Max
5.5
5.5
µA
60
50
V
4.70
4.75
4.45
4.50
4.06
4.10
3.11
3.15
2.96
3.00
2.66
2.70
—
—
560
0.3
0.4
0.3
V
—
—
V
0.3
0.4
V
—
ppm/°C
µsec
msec
V
Unit
V
V
TH
V
OH
V
OL
V
OH
tion testing done at T
A
= 25°C, over temperature limits guaranteed by design.
PIN DESCRIPTION
Pin No.
1
2
2
3
Symbol
GNDGround
Description
RESET (MAX809)RESET output remains low while V
CC
is below the reset voltage threshold, and for 240msec (typ.)
after V
CC
rises above reset threshold
RESET (MAX810)
V
CC
RESET output remains high while V
CC
is below the reset voltage threshold, and for 240msec (typ.)
after V
CC
rises above reset threshold
Supply Voltage (typ.)
3
元器件交易网
MAX809, MAX810
APPLICATIONS INFORMATION
V
CC
Transient Rejection
The MAX809/810 provides accurate V
CC
monitoring and
reset timing during power–up, power–down, and
brownout/sag conditions, and rejects negative–going
transients (glitches) on the power supply line. Figure 1
shows the maximum transient duration vs. maximum
negative excursion (overdrive) for glitch rejection. Any
combination of duration and overdrive which lies under the
curve will not generate a reset signal. Combinations above
the curve are detected as a brownout or power–down.
Transient immunity can be improved by adding a capacitor
in close proximity to the V
CC
pin of the MAX809/810.
V
CC
V
TH
Overdrive
hold the output low (Figure 2). This resistor value, though
not critical, should be chosen such that it does not
appreciably load RESET under normal operation (100k
W
will be suitable for most applications). Similarly, a pull–up
resistor to V
CC
is required for the MAX810 to ensure a valid
high RESET for V
CC
below 1.0V.
V
CC
V
CC
MAX809
RESET
R1
100 k
GND
Duration
M
A
X
I
M
U
M
T
R
A
N
S
I
E
N
T
D
U
R
A
T
I
O
N
(
m
s
e
c
)
400
320
240
160
MAX8xxL/M/J
90
0
1
MAX8xxR/S/T
101001000
RESET COMPARATOR OVERDRIVE,
(V
TH
– V
CC
(mV)
T
A
= +25° C
Figure 2. Ensuring RESET Valid to V
CC
= 0 V
Processors With Bidirectional I/O Pins
Some µP’s (such as Motorola 68HC11) have
bi–directional reset pins. Depending on the current drive
capability of the processor pin, an indeterminate logic level
may result if there is a logic conflict. This can be avoided
by adding a 4.7kW resistor in series with the output of the
MAX809/810 (Figure 3). If there are other components in
the system which require a reset signal, they should be
buffered so as not to load the reset line. If the other
components are required to follow the reset I/O of the µP, the
buffer should be connected as shown with the solid line.
BUFFER
V
CC
Figure 1. Maximum Transient Duration vs. Overdrive
for Glitch Rejection at 25° C
RESET Signal Integrity During Power–Down
BUFFERED RESET
TO OTHER SYSTEM
COMPONENTS
V
CC
mP
RESET
GND
V
CC
MAX809
47 k
RESET
GND
The MAX809 RESET output is valid to V
CC
= 1.0V.
Below this voltage the output becomes an ”open circuit” and
does not sink current. This means CMOS logic inputs to the
µP will be floating at an undetermined voltage. Most digital
systems are completely shutdown well above this voltage.
However, in situations where RESET must be maintained
valid to V
CC
= 0V, a pull–down resistor must be connected
from RESET to ground to discharge stray capacitances and
Figure 3. Interfacing to Bidirectional Reset I/O
4
元器件交易网
MAX809, MAX810
TYPICAL CHARACTERISTICS
35
30
S
U
P
P
L
Y
C
U
R
R
E
N
T
(
m
A
)
25
20
15
10
5
0
–40–2002040
TEMPERATURE (C°)
V
CC
= 1 V
6085
V
CC
= 3 V
V
CC
= 5 V
S
U
P
P
L
Y
C
U
R
R
E
N
T
(
m
A
)
30
V
CC
= 5 V
25
20
15
10
5
0
–40
V
CC
= 1 V
V
CC
= 3 V
–2002040
TEMPERATURE (C°)
6085
Figure 4. Supply Current vs Temperature
(No Load, MAX8xxR/S/T)
Figure 5. Supply Current vs Temperature
(No Load, MAX8xxL/M/J/)
100
P
O
W
E
R
–
D
O
W
N
R
E
S
E
T
D
E
L
A
Y
(
m
s
e
c
)
80
60
40
20
0
–40
P
O
W
E
R
–
D
O
W
N
R
E
S
E
T
D
E
L
A
Y
(
m
s
e
c
)
V
OD
= VTH – V
CC
V
OD
= 10 mV
140
120
100
80
60
40
20
0
–40
V
OD
= VTH – V
CC
V
OD
= 10 mV
V
OD
= 10 mV
V
OD
= 20 mV
V
OD
= 100 mV
V
OD
= 200 mV
–2002040
TEMPERATURE (C°)
6085
V
OD
= 100 mV
V
OD
= 200 mV
–2002040
TEMPERATURE (C°)
6085
Figure 6. Power–Down Reset Delay vs
Temperature and Overdrive (MAX8xxR/S/T)
Figure 7. Power–Down Reset Delay vs
Temperature and Overdrive (MAX8xxL/M/J)
P
O
W
E
R
–
U
P
R
E
S
E
T
T
I
M
E
O
U
T
(
m
s
e
c
)
250
N
O
R
M
A
L
I
Z
E
D
T
H
R
E
S
H
O
L
D
245
MAX8xxL/M/J
240
235
230
225
–40
MAX8xxR/S/T
1.003
1.002
1.001
1.000
0.999
0.998
0.997
–2002040
TEMPERATURE (C°)
6085
–40–2002040
TEMPERATURE (C°)
60
85
Figure 8. Power–Up Reset Timeout vs
Temperature
Figure 9. Normalized Reset Threshold vs
Temperature
5
元器件交易网
MAX809, MAX810
TAPING FORM
Component Taping Orientation for 3L SOT–23 (JEDEC–236) Devices
USER DIRECTION OF FEED
DEVICE
MARKING
PIN 1
Standard Reel Component Orientation
(Mark Right Side Up)
Tape & Reel Specifications Table
Package
SOT–23
Carrier Width (W)
8 mm
Pitch (P)
4 mm
Part Per Full Reel
3000
Reel Size
7 inches
MARKING DIAGRAM
SOT–23
xxYW
YW = Date Code
MARKING
ON Semiconductor Part #
MAX809L
MAX809M
MAX809T
MAX809S
MAX809R
MAX809J
MAX810L
MAX810M
MAX810T
MAX810S
MAX810R
YW = Date code
Reset Threshold or Address
4.63
4.38
3.08
2.93
2.63
4.00
4.63
4.38
3.08
2.93
2.63
Marking
J1YW
J2YW
J3YW
J4YW
J5YW
J6YW
K1YW
K2YW
K3YW
K4YW
K5YW
6
元器件交易网
MAX809, MAX810
PACKAGE DIMENSIONS
SOT–23
PLASTIC PACKAGE (TO–236)
CASE 318–08
ISSUE AF
NOTES:
IONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
LLING DIMENSION: INCH.
M LEAD THICKNESS INCLUDES LEAD
FINISH THICKNESS. MINIMUM LEAD THICKNESS
IS THE MINIMUM THICKNESS OF BASE
MATERIAL.
A
L
3
1
2
B
S
VG
C
D
H
K
J
DIM
A
B
C
D
G
H
J
K
L
S
V
INCHES
MINMAX
0.11020.1197
0.04720.0551
0.03500.0440
0.01500.0200
0.07010.0807
0.00050.0040
0.00340.0070
0.01400.0285
0.03500.0401
0.08300.1039
0.01770.0236
MILLIMETERS
MINMAX
2.803.04
1.201.40
0.891.11
0.370.50
1.782.04
0.0130.100
0.0850.177
0.350.69
0.891.02
2.102.64
0.450.60
7
元器件交易网
MAX809, MAX810
ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes
without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular
purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability,
including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be
validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others.
SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or
death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold
SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable
attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim
alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer.
PUBLICATION ORDERING INFORMATION
CENTRAL/SOUTH AMERICA:
Spanish Phone:303–308–7143 (Mon–Fri 8:00am to 5:00pm MST)
Email:ONlit–spanish@
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Phone:303–675–2121 (Tue–Fri 9:00am to 1:00pm, Hong Kong Time)
Toll Free from Hong Kong & Singapore:
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Phone: 81–3–5740–2745
Email: r14525@
ON Semiconductor Website:
For additional information, please contact your local
Sales Representative.
8
MAX809/D
2024年7月11日发(作者：次岚霏)
元器件交易网
MAX809,MAX810
3-PinMicroprocessor
ResetMonitors
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 20 µsec of V
CC
falling
through the reset voltage threshold. Reset is maintained active for a
minimum of 140msec 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. The output of the MAX809 is
guaranteed valid down to V
CC
= 1V. Both devices are available in a
SOT–23 package.
The MAX809/810 are optimized to reject fast transient glitches on
the V
CC
line. Low supply current of 17µA (V
CC
= 3.3V) makes these
devices suitable for battery powered applications.
Features
•
Precision V
CC
Monitor for 3.0V, 3.3V, and 5.0V Supplies
•
140msec Guaranteed Minimum RESET, RESET
Output Duration
•
RESET Output Guaranteed to V
CC
= 1.0V (MAX809)
•
Low 17µA Supply Current
•
V
CC
Transient Immunity
•
Small SOT–23 Package
•
No External Components
•
Wide Operating Temperature: –40°C to 85°C
Typical Applications
•
Computers
•
Embedded Systems
•
Battery Powered Equipment
•
Critical µP Power Supply Monitoring
TYPICAL APPLICATION DIAGRAM
V
CC
V
CC
MAX809
RESET
V
CC
PROCESSOR
RESET
INPUT
GND
SOT–23
(TO–236)
CASE 318
PIN CONFIGURATION
(Top View)
GND
1
3
RESET
(RESET)**
V
CC
2
SOT–23*
NOTE:*SOT–23 is equivalent to JEDEC (TO–236)
** RESET is for MAX809
** RESET is for MAX810
ORDERING INFORMATION
Device
MAX809xTR
MAX810xTR
Package
SOT–23
SOT–23
Shipping
3000 Tape/Reel
3000 Tape/Reel
NOTE: The ”x” denotes a suffix for V
CC
threshold –
see table below
Suffix
L
M
J*
T
S
R
Reset V
CC
Threshold (V)
4.63
4.38
4.00
3.08
2.93
2.63
GND
NOTE: *J version is available for MAX809 only
© Semiconductor Components Industries, LLC, 1999
1
February, 2000 – Rev. 2
Publication Order Number:
MAX809/D
元器件交易网
MAX809, MAX810
ABSOLUTE MAXIMUM RATINGS*
SymbolParameter
Supply Voltage (V
CC
to GND)
RESET, RESET
Input Current, V
CC
Output Current, RESET, RESET
dV/dt (V
CC
)
P
D
T
A
T
stg
T
sol
Power Dissipation (T
A
≤ 70°C)
SOT–23 (derate 4mW/°C above +70°C)
Operating Temperature Range
Storage Temperature Range
Lead Temperature (Soldering, 10 Seconds)
Value
6.0
–0.3 to (V
CC
+ 0.3)
20
20
100
230
–40 to +85
–65 to +150
+260
°C
°C
°C
Unit
V
V
mA
mA
V/µsec
mW
* Maximum Ratings are those values beyond which damage to the device may occur.
2
元器件交易网
MAX809, MAX810
ELECTRICAL CHARACTERISTICS (V
CC
= Full Range, T
A
=
–40°C to +85°C unless otherwise noted
. typical values are at T
A
= +25C, V
CC
= 5V for L/M/J, 3.3V for T/S, 3.0V for R)
(Note NO TAG)
Symbol
V
CC
Range
T
A
= 0°C to +70°C
T
A
= –40°C to +85°C
I
CC
Supply Current
MAX8xxL/M/J: V
CC
< 5.5V
MAX8xxR/S/T: V
CC
< 3.6V
Reset Threshold (Note NO TAG)
MAX8xxL: T
A
= 25°C
T
A
= –40°C to +85°C
MAX8xxM: T
A
= 25°C
T
A
= –40°C to +85°C
MAX809J: T
A
= 25°C
T
A
= –40°C to +85°C
MAX8xxT: T
A
= 25°C
T
A
= –40°C to +85°C
MAX8xxS: T
A
= 25°C
T
A
= –40°C to +85°C
MAX8xxR: T
A
= 25°C
T
A
= –40°C to +85°C
Reset Threshold Temperature Coefficient
V
CC
to Reset Delay V
CC
= V
TH
to (V
TH
– 100mV)
Reset Active Timeout Period
V
OL
RESET Output Voltage Low (MAX809)
MAX809R/S/T: V
CC
= V
TH
min, I
SINK
= 1.2mA
MAX809L/M/J: V
CC
= V
TH
min, I
SINK
= 3.2mA
V
CC
> 1.0V, I
SINK
= 50µA
RESET Output Voltage High (MAX809)
MAX809R/S/T: V
CC
> V
TH
max, I
SOURCE
= 500µA
MAX809L/M/J: V
CC
> V
TH
max, I
SOURCE
= 800µA
RESET Output Voltage Low (MAX810)
MAX810R/S/T: V
CC
= V
TH
max, I
SINK
= 1.2mA
MAX810L/M/J: V
CC
= V
TH
max, I
SINK
= 3.2mA
RESET Output Voltage High (MAX810)
1.8 < V
CC
< V
TH
min, I
SOURCE
= 150µA
CharacteristicMin
1.0
1.2
—
—
4.56
4.50
4.31
4.25
3.93
3.89
3.04
3.00
2.89
2.85
2.59
2.55
—
—
140
—
—
—
0.8 V
CC
V
CC
– 1.5
—
—
0.8 V
CC
Typ
—
—
24
17
4.63
—
4.38
—
4.00
—
3.08
—
2.93
—
2.63
—
30
20
240
—
—
—
—
—
—
—
—
Max
5.5
5.5
µA
60
50
V
4.70
4.75
4.45
4.50
4.06
4.10
3.11
3.15
2.96
3.00
2.66
2.70
—
—
560
0.3
0.4
0.3
V
—
—
V
0.3
0.4
V
—
ppm/°C
µsec
msec
V
Unit
V
V
TH
V
OH
V
OL
V
OH
tion testing done at T
A
= 25°C, over temperature limits guaranteed by design.
PIN DESCRIPTION
Pin No.
1
2
2
3
Symbol
GNDGround
Description
RESET (MAX809)RESET output remains low while V
CC
is below the reset voltage threshold, and for 240msec (typ.)
after V
CC
rises above reset threshold
RESET (MAX810)
V
CC
RESET output remains high while V
CC
is below the reset voltage threshold, and for 240msec (typ.)
after V
CC
rises above reset threshold
Supply Voltage (typ.)
3
元器件交易网
MAX809, MAX810
APPLICATIONS INFORMATION
V
CC
Transient Rejection
The MAX809/810 provides accurate V
CC
monitoring and
reset timing during power–up, power–down, and
brownout/sag conditions, and rejects negative–going
transients (glitches) on the power supply line. Figure 1
shows the maximum transient duration vs. maximum
negative excursion (overdrive) for glitch rejection. Any
combination of duration and overdrive which lies under the
curve will not generate a reset signal. Combinations above
the curve are detected as a brownout or power–down.
Transient immunity can be improved by adding a capacitor
in close proximity to the V
CC
pin of the MAX809/810.
V
CC
V
TH
Overdrive
hold the output low (Figure 2). This resistor value, though
not critical, should be chosen such that it does not
appreciably load RESET under normal operation (100k
W
will be suitable for most applications). Similarly, a pull–up
resistor to V
CC
is required for the MAX810 to ensure a valid
high RESET for V
CC
below 1.0V.
V
CC
V
CC
MAX809
RESET
R1
100 k
GND
Duration
M
A
X
I
M
U
M
T
R
A
N
S
I
E
N
T
D
U
R
A
T
I
O
N
(
m
s
e
c
)
400
320
240
160
MAX8xxL/M/J
90
0
1
MAX8xxR/S/T
101001000
RESET COMPARATOR OVERDRIVE,
(V
TH
– V
CC
(mV)
T
A
= +25° C
Figure 2. Ensuring RESET Valid to V
CC
= 0 V
Processors With Bidirectional I/O Pins
Some µP’s (such as Motorola 68HC11) have
bi–directional reset pins. Depending on the current drive
capability of the processor pin, an indeterminate logic level
may result if there is a logic conflict. This can be avoided
by adding a 4.7kW resistor in series with the output of the
MAX809/810 (Figure 3). If there are other components in
the system which require a reset signal, they should be
buffered so as not to load the reset line. If the other
components are required to follow the reset I/O of the µP, the
buffer should be connected as shown with the solid line.
BUFFER
V
CC
Figure 1. Maximum Transient Duration vs. Overdrive
for Glitch Rejection at 25° C
RESET Signal Integrity During Power–Down
BUFFERED RESET
TO OTHER SYSTEM
COMPONENTS
V
CC
mP
RESET
GND
V
CC
MAX809
47 k
RESET
GND
The MAX809 RESET output is valid to V
CC
= 1.0V.
Below this voltage the output becomes an ”open circuit” and
does not sink current. This means CMOS logic inputs to the
µP will be floating at an undetermined voltage. Most digital
systems are completely shutdown well above this voltage.
However, in situations where RESET must be maintained
valid to V
CC
= 0V, a pull–down resistor must be connected
from RESET to ground to discharge stray capacitances and
Figure 3. Interfacing to Bidirectional Reset I/O
4
元器件交易网
MAX809, MAX810
TYPICAL CHARACTERISTICS
35
30
S
U
P
P
L
Y
C
U
R
R
E
N
T
(
m
A
)
25
20
15
10
5
0
–40–2002040
TEMPERATURE (C°)
V
CC
= 1 V
6085
V
CC
= 3 V
V
CC
= 5 V
S
U
P
P
L
Y
C
U
R
R
E
N
T
(
m
A
)
30
V
CC
= 5 V
25
20
15
10
5
0
–40
V
CC
= 1 V
V
CC
= 3 V
–2002040
TEMPERATURE (C°)
6085
Figure 4. Supply Current vs Temperature
(No Load, MAX8xxR/S/T)
Figure 5. Supply Current vs Temperature
(No Load, MAX8xxL/M/J/)
100
P
O
W
E
R
–
D
O
W
N
R
E
S
E
T
D
E
L
A
Y
(
m
s
e
c
)
80
60
40
20
0
–40
P
O
W
E
R
–
D
O
W
N
R
E
S
E
T
D
E
L
A
Y
(
m
s
e
c
)
V
OD
= VTH – V
CC
V
OD
= 10 mV
140
120
100
80
60
40
20
0
–40
V
OD
= VTH – V
CC
V
OD
= 10 mV
V
OD
= 10 mV
V
OD
= 20 mV
V
OD
= 100 mV
V
OD
= 200 mV
–2002040
TEMPERATURE (C°)
6085
V
OD
= 100 mV
V
OD
= 200 mV
–2002040
TEMPERATURE (C°)
6085
Figure 6. Power–Down Reset Delay vs
Temperature and Overdrive (MAX8xxR/S/T)
Figure 7. Power–Down Reset Delay vs
Temperature and Overdrive (MAX8xxL/M/J)
P
O
W
E
R
–
U
P
R
E
S
E
T
T
I
M
E
O
U
T
(
m
s
e
c
)
250
N
O
R
M
A
L
I
Z
E
D
T
H
R
E
S
H
O
L
D
245
MAX8xxL/M/J
240
235
230
225
–40
MAX8xxR/S/T
1.003
1.002
1.001
1.000
0.999
0.998
0.997
–2002040
TEMPERATURE (C°)
6085
–40–2002040
TEMPERATURE (C°)
60
85
Figure 8. Power–Up Reset Timeout vs
Temperature
Figure 9. Normalized Reset Threshold vs
Temperature
5
元器件交易网
MAX809, MAX810
TAPING FORM
Component Taping Orientation for 3L SOT–23 (JEDEC–236) Devices
USER DIRECTION OF FEED
DEVICE
MARKING
PIN 1
Standard Reel Component Orientation
(Mark Right Side Up)
Tape & Reel Specifications Table
Package
SOT–23
Carrier Width (W)
8 mm
Pitch (P)
4 mm
Part Per Full Reel
3000
Reel Size
7 inches
MARKING DIAGRAM
SOT–23
xxYW
YW = Date Code
MARKING
ON Semiconductor Part #
MAX809L
MAX809M
MAX809T
MAX809S
MAX809R
MAX809J
MAX810L
MAX810M
MAX810T
MAX810S
MAX810R
YW = Date code
Reset Threshold or Address
4.63
4.38
3.08
2.93
2.63
4.00
4.63
4.38
3.08
2.93
2.63
Marking
J1YW
J2YW
J3YW
J4YW
J5YW
J6YW
K1YW
K2YW
K3YW
K4YW
K5YW
6
元器件交易网
MAX809, MAX810
PACKAGE DIMENSIONS
SOT–23
PLASTIC PACKAGE (TO–236)
CASE 318–08
ISSUE AF
NOTES:
IONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
LLING DIMENSION: INCH.
M LEAD THICKNESS INCLUDES LEAD
FINISH THICKNESS. MINIMUM LEAD THICKNESS
IS THE MINIMUM THICKNESS OF BASE
MATERIAL.
A
L
3
1
2
B
S
VG
C
D
H
K
J
DIM
A
B
C
D
G
H
J
K
L
S
V
INCHES
MINMAX
0.11020.1197
0.04720.0551
0.03500.0440
0.01500.0200
0.07010.0807
0.00050.0040
0.00340.0070
0.01400.0285
0.03500.0401
0.08300.1039
0.01770.0236
MILLIMETERS
MINMAX
2.803.04
1.201.40
0.891.11
0.370.50
1.782.04
0.0130.100
0.0850.177
0.350.69
0.891.02
2.102.64
0.450.60
7
元器件交易网
MAX809, MAX810
ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes
without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular
purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability,
including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be
validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others.
SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
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attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim
alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer.
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8
MAX809/D