© Semiconductor Components Industries, LLC, 2014
August, 2014 − Rev. 34 1Publication Order Number:
CAT803/D
CAT803, CAT809, CAT810
3-Pin Microprocessor
Power Supply Supervisors
Description
The CAT803, CAT809, and CAT810 are supervisory circuits that
monitor power supplies in digital systems. The CAT803, CAT809, and
CAT810 are direct replacements for the MAX803, MAX809 and
MAX810 in applications operating over the industrial temperature range.
These devices generate a reset signal, which is asserted while the
power supply voltage is below a preset threshold level and for at least
140 ms after the power supply level has risen above that level. The
underlying floating gate technology, Analog EEPROM used by
ON Semiconductor, makes it possible to offer any custom reset
threshold value. Seven industry standard threshold levels are offered
to support +5.0 V, +3.3 V, +3.0 V and +2.5 V systems.
The CAT803 has an open−drain RESET output (active LOW). The
CAT803 requires a pull−up resistor on the reset output.
The CAT809 features a push−pull RESET output (active LOW) and
the CAT810 features a push−pull RESET output (active HIGH).
Fast transients on the power supply are ignored and the output is
guaranteed to be in the correct state at VCC levels as low as 1.0 V.
The CAT803, CAT809, and CAT810 are available in both the
compact 3−pin SOT−23 and SC−70 packages.
Features
•Precision Monitoring of
+5.0 V (−5%, −10%, −20%),
+3.3 V (−5%, −10%),
+3.0 V (−10%) and
+2.5 V (−5%) Power Supplies
•Offered in Three Output Configurations:
− CAT803: Open−Drain Active LOW Reset
− CAT809: Push−Pull Active LOW Reset
− CAT810: Push−Pull Active HIGH Reset
•Direct Replacements for the MAX803, MAX809 and MAX810 in
Applications Operating over the Industrial Temperature Range
•Reset Valid down to VCC = 1.0 V
•6 mA Power Supply Current
•Power Supply Transient Immunity
•Industrial Temperature Range: −40°C to +85°C
•Available in SOT−23 and SC−70 Packages
•These Devices are Pb−Free and are RoHS Compliant
Applications
•Computers, Servers, Laptops, Cable Modems
•Wireless Communications
•Embedded Control Systems
•White Goods, Power Meters
•Intelligent Instruments
•PDAs and Handheld Equipment
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PIN CONFIGURATION
VCC
RESET
(RESET)
GND 1
See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.
ORDERING INFORMATION
(Top View)
SOT−23
TB SUFFIX
CASE 527AG
SC−70
SD SUFFIX
CASE 419AB
2
3
CAT803
CAT809
(CAT810)
3−Lead SOT23
3−Lead SC70
XXXMG
G
XXX = Specific Device Code
M = Month Code
G= Pb−Free Package
XXXMG
G
MARKING DIAGRAMS
(*Note: Microdot may be in either location)
SOT−23 SC−70
CAT803, CAT809, CAT810
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2
Table 1. THRESHOLD SUFFIX SELECTOR
Nominal Threshold Voltage Threshold Suffix Designation
4.63 V L
4.55 V H
4.38 V M
4.00 V J
3.08 V T
2.93 V S
2.63 V R
2.32 V Z
1.60 V V
Table 2. PIN DESCRIPTIONS
Pin Number
Name Description
CAT803 CAT809 CAT810
1 1 1 GND Ground
2 2 − RESET Active LOW reset. RESET is asserted if VCC falls below the reset threshold and
remains low for at least 140 ms after VCC rises above the reset threshold.
− − 2 RESET Active HIGH reset. RESET is asserted if VCC falls below the reset threshold and
remains high for at least 140 ms after VCC rises above the reset threshold.
3 3 3 VCC Power supply voltage that is monitored.
Table 3. ABSOLUTE MAXIMUM RATINGS
Parameter Rating Units
Any pin with respect to ground −0.3 to +6.0 V
Input Current, VCC 20 mA
Output Current, RESET, RESET 20 mA
Rate of Rise, VCC 100 V/ms
Continuous Power Dissipation
Derate 2.2 mW/°C above 70°C (SC70)
Derate 4 mW/°C above 70°C (SOT23) 175
320
mW
Operating Temperature Range −40 to +85 °C
Storage Temperature Range −65 to +105 °C
Lead Soldering Temperature (10 sec) 300 °C
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be af fected.
CAT803, CAT809, CAT810
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3
CAT803
GND
+
–DIGITAL
DELAY
TOLERANCE
BIAS
VOLTAGE
REFERENCE
CAT810
+
–DIGITAL
DELAY
TOLERANCE
BIAS
VOLTAGE
REFERENCE
GND
CAT809
+
–DIGITAL
DELAY
TOLERANCE
BIAS
VOLTAGE
REFERENCE
GND
Figure 1. Block Diagrams
VCC VCC
VCC
RESET
RESET
RESET
VCC
VCC
VCC
VCC
VCC
VCC
CAT803, CAT809, CAT810
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4
Table 4. ELECTRICAL CHARACTERISTICS
(VCC = Full range, TA = −40°C to +85°C, unless otherwise specified. Typical values at TA = +25°C and VCC = 5 V for the L/H/M/J
versions, VCC = 3.3 V for the T/S versions, VCC = 3 V for the R version and VCC = 2.5 V for the Z/V versions.)
Symbol Parameter Conditions Min Typ
(Note 1) Max Units
VCC Range TA = 0°C to +70°C 1.0 5.5 V
TA = −40°C to +85°C 1.2 5.5
ICC Supply Current TA = −40°C
to +85°CVCC < 5.5 V, J/L/M/H 8 20 mA
VCC < 3.6 V, R/S/T/Z/V 6 15
VTH Reset Threshold Voltage L Threshold TA = +25°C 4.56 4.63 4.70 V
TA = −40°C to +85°C 4.50 4.75
H Threshold TA = +25°C 4.48 4.55 4.62
TA = −40°C to +85°C 4.43 4.67
M Threshold TA = +25°C 4.31 4.38 4.45
TA = −40°C to +85°C 4.25 4.50
J Threshold TA = +25°C 3.93 4.00 4.06
TA = −40°C to +85°C 3.89 4.10
T Threshold TA = +25°C 3.04 3.08 3.11
TA = −40°C to +85°C 3.00 3.15
S Threshold TA = +25°C 2.89 2.93 2.96
TA = −40°C to +85°C 2.85 3.00
R Threshold TA = +25°C 2.59 2.63 2.66
TA = −40°C to +85°C 2.55 2.70
Z Threshold TA = +25°C 2.28 2.32 2.35
TA = −40°C to +85°C 2.25 2.38
V Threshold TA = +25°C 1.58 1.60 1.62
TA = −40°C to +85°C 1.56 1.64
Reset Threshold Tempco 30 ppm/°C
TDVCC to Reset Delay (Note 2) VCC = VTH to (VTH − 100 mV) 20 ms
TRReset Active Timeout Period TA = −40°C to +85°C 140 240 460 ms
VOL RESET Output Voltage Low
(Open−drain active LOW,
CAT803 and push−pull,
active LOW, CAT809)
VCC = VTH min, ISINK = 1.2 mA
CAT803R/S/T/Z, CAT809R/S/T/Z/V 0.3 V
VCC = VTH min, ISINK = 3.2 mA
CAT803J/L/M, CAT809J/L/M/H 0.4
VCC > 1.0 V, ISINK = 50 mA0.3
VOH RESET Output Voltage High
(Push−pull, active LOW,
CAT809)
VCC = VTH max, ISOURCE = 500 mA
CAT809R/S/T/Z/V 0.8 VCC V
VCC = VTH max, ISOURCE = 800 mA
CAT809J/L/M/H VCC − 1.5
VOL RESET Output Voltage Low
(Push−pull, active HIGH,
CAT810)
VCC > VTH max, ISINK = 1.2 mA
CAT810R/S/T/Z 0.3 V
VCC > VTH max, ISINK = 3.2 mA
CAT810J/L/M 0.4
VOH RESET Output Voltage High
(Push−pull, active HIGH,
CAT810)
1.8 V < VCC VTH min,
ISOURCE = 150 mA0.8 VCC V
1. Production testing done at TA = +25°C; limits over temperature guaranteed by design only.
2. RESET output for the CAT809; RESET output for the CAT810.
CAT803, CAT809, CAT810
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TYPICAL OPERATING CHARACTERISTICS
(VCC = Full range, TA = −40°C to +85°C, unless otherwise specified. Typical values at TA = +25°C and VCC = 5 V for the
L/M/J versions, VCC = 3.3 V for the T/S versions, VCC = 3 V for the R version and VCC = 2.5 V for the Z version.)
Figure 2. Power−up Reset Timeout vs.
Temperature Figure 3. Supply Current vs. Temperature
(No Load, CAT8xxR/S/T/Z)
TEMPERATURE (°C) TEMPERATURE (°C)
150100500−50
160
180
200
220
240
260
100500−50
0
4
6
8
10
12
Figure 4. Power−down Reset Delay vs.
Temperature (CAT8xxR/S/T/Z) Figure 5. Normalized Reset Threshold vs.
Temperature
TEMPERATURE (°C) TEMPERATURE (°C)
150100500−50
0
4
10
14
120100806040200
0.9988
0.9990
0.9992
0.9998
1.0000
1.0002
POWER−UP RESET TIMEOUT (mS)
SUPPLY CURRENT (mA)
POWER−DOWN RESET DELAY (mS)
NORMALIZED THRESHOLD
150
0.9994
2
2
6
8
12
0.9996
VCC = 3.6 V
VCC = 5.5 V
VCC = 2.5 V
VCC = 5 V
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Detailed Descriptions
Reset Timing
The r eset s ignal i s a sserted L OW f or t he C AT803/CAT809 a nd H IGH f or t he CAT810 w hen t he p ower supply v oltage f alls b elow
the threshold trip voltage and remains asserted for at least 140 ms after the power supply voltage has risen above the threshold.
0 V
CAT803, CAT809
5 V
0 V
5 V
RESET
(140 ms
minimum)
Reset Timeout Period
CAT810
0 V
5 V
Figure 6. Reset Timing Diagram
TR
TD
VTH
VCC
RESET
VCC Transient Response
The CAT803/CAT809/CAT810 protect mPs against
brownout failure. Short duration transients of 4 msec or less
and 100 mV amplitude typically do not cause a false RESET.
Figure 7 shows the maximum pulse duration of negative−
going VCC transients that do not cause a reset condition.
As the amplitude of the transient goes further below the
threshold (increasing VTH − VCC), the maximum pulse
duration decreases. In this test, the VCC starts from an initial
voltage of 0.5 V above the threshold and drops below it by
the amplitude of the overdrive voltage (VTH − VCC).
Figure 7. Maximum Transient Duration without
Causing a Reset Pulse vs. Reset Comparator
Overdrive
RESET OVERDRIVE VTH − VCC (mV)
1000100101
0
5
10
15
20
25
30
TRANSIENT DURATION (ms)
CAT809M
CAT809Z
TAMB = 25°C
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Valid RESET with VCC Under 1.0 V
To ensure that the CAT809 RESET pin is in a known state when VCC is under 1.0 V, a >10 kW pull−down resistor between
RESET pin and GND is recommended. For the CAT810, a pull−up resistor from RESET pin to VCC is needed.
Figure 8. RESET Valid with VCC Under 1.0 V Figure 9. RESET Valid with VCC Under 1.1 V
CAT809
GND
Power
10 kW
Supply
CAT810
GND
Power
Supply
RESET
VCC
RESET
10 kW
VCC
Bi−directional Reset Pin Interfacing
The CAT809/810 can interface with mP/mC bi−directional reset pins by connecting a 4.7 kW resistor in series with the
CAT809/810 reset output and the mP/mC bi−directional reset pin.
Figure 10. Bi−directional Reset Pin Interfacing
CAT809
GND
Power
Supply
BUF Buffered
RESET
GND
Bi−directional
I/O Pin
mP(For example:
68HC11)
VCC
VCC
4.7 kW
RESET RESET
INPUT
CAT803 Open−Drain RESET Application
The CAT803 features an open−drain RESET output and
therefore needs a pull−up resistor on the output for proper
operation, as shown on Figure 11. An advantage of the
open−drain output includes the ability to “wire AND”
several outputs together to form an inexpensive logic circuit.
It is also possible to have the pull−up resistor connected to
a dif ferent supply which can be higher than the CAT803 VCC
pin. The value of the pull−up resistor is not critical in most
applications, typical values being between 5 kW and 10 kW.
Figure 11. Typical CAT803 Open−Drain
Circuit Configuration
CAT803
GND
Power
Supply
GND
mP
VCC
VCC
5 kW
RESET RESET
INPUT
CAT803, CAT809, CAT810
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Table 5. ORDERING PART NUMBER
Order Number
Voltage
Top Mark
(Note 3)
Output Reset Package
Quan-
tity
per
Reel
(Note
4)
NiPdAu Matte−Tin NiPdAu Matte−Tin
CAT803LSDI−GT3* 4.63 V VKA VKL
Open
Drain LOW SC70−3
3,000
CAT803MSDI−GT3* 4.38 V VKA VKL
CAT803JSDI−GT3* 4.00 V VKA VKL
CAT803TSDI−GT3* CAT803TSDI−T3* 3.08 V VKA VKL
CAT803SSDI−GT3 CAT803SSDI−T3* 2.93 V VKA VKL
CAT803RSDI−GT3* 2.63 V VKA VKL
CAT803ZSDI−GT3* 2.32 V VKA VKL
CAT803LTBI−GT3* 4.63 V VKA VKL
Open
Drain LOW SOT−23−3
CAT803MTBI−GT3* CAT803MTBI−T3* 4.38 V VKA VKL
CAT803JTBI−GT3* 4.00 V VKA VKL
CAT803TTBI−GT3* CAT803TTBI−T3* 3.08 V VKA VKL
CAT803STBI−GT3* CAT803STBI−T3* 2.93 V VKA VKL
CAT803RTBI−GT3* CAT803RTBI−T3* 2.63 V VKA VKL
CAT803ZTBI−GT3* 2.32 V VKA VKL
CAT809LSDI−GT3* 4.63 V VLA VLD
CMOS /
Push−Pull LOW SC70−3
3,000
CAT809MSDI−GT3* 4.38 V VLA VLD
CAT809JSDI−GT3* 4.00 V VLA VLD
CAT809TSDI−GT3* CAT809TSDI−T3* 3.08 V VLA VLD
CAT809SSDI−GT3* CAT809SSDI−T3* 2.93 V VLA VLD
CAT809RSDI−GT3* 2.63 V VLA VLD
CAT809ZSDI−GT3* CAT809ZSDI−T3* 2.32 V VLA VLD
CAT809LTBI−GT3 CAT809LTBI−T3* 4.63 V VLA VLD
CMOS /
Push−Pull LOW SOT−23−3
CAT809HTBI−GT3* CAT809HTBI−T3* 4.55 V VLA VLD
CAT809MTBI−GT3 CAT809MTBI−T3* 4.38 V VLA VLD
CAT809JTBI−GT3 CAT809JTBI−T3* 4.00 V VLA VLD
CAT809TTBI−GT3 CAT809TTBI−T3* 3.08 V VLA VLD
CAT809STBI−GT3 CAT809STBI−T3* 2.93 V VLA VLD
CAT809RTBI−GT3 CAT809RTBI−T3* 2.63 V VLA VLD
CAT809ZTBI−GT3 CAT809ZTBI−T3* 2.32 V VLA VLD
CAT809VTBI−GT3 1.60 V VLA VLD
3. Threshold and full part numbers will be provided on box and reel labels as well as all Shipping documents.
4. For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
5. For detailed information and a breakdown of device nomenclature and numbering systems, please see the ON Semiconductor Device
Nomenclature document, TND310/D, available at www.onsemi.com
*These devices are beginning End Of Life proceedings.
CAT803, CAT809, CAT810
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9
Table 5. ORDERING PART NUMBER
Order Number
Quan-
tity
per
Reel
(Note
4)
PackageResetOutput
Top Mark
(Note 3)
Voltage
NiPdAu
Quan-
tity
per
Reel
(Note
4)
PackageResetOutput
Matte−TinNiPdAu
Voltage
Matte−Tin
CAT810LSDI−GT3* 4.63 V VHA VHT
CMOS /
Push−Pull HIGH SC70−3
3,000
CAT810MSDI−GT3* 4.38 V VHA VHT
CAT810JSDI−GT3* 4.00 V VHA VHT
CAT810TSDI−GT3* 3.08 V VHA VHT
CAT810SSDI−GT3* 2.93 V VHA VHT
CAT810RSDI−GT3* 2.63 V VHA VHT
CAT810ZSDI−GT3* 2.32 V VHA VHT
CAT810LTBI−GT3* CAT810LTBI−T3* 4.63 V VHA VHT
CMOS /
Push−Pull HIGH SOT−23−3
CAT810MTBI−GT3* CAT810MTBI−T3* 4.38 V VHA VHT
CAT810JTBI−GT3 CAT810JTBI−T3* 4.00 V VHA VHT
CAT810TTBI−GT3 CAT810TTBI−T3* 3.08 V VHA VHT
CAT810STBI−GT3* CAT810STBI−T3* 2.93 V VHA VHT
CAT810RTBI−GT3* CAT810RTBI−T3* 2.63 V VHA VHT
CAT810ZTBI−GT3* CAT810ZTBI−T3* 2.32 V VHA VHT
3. Threshold and full part numbers will be provided on box and reel labels as well as all Shipping documents.
4. For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
5. For detailed information and a breakdown of device nomenclature and numbering systems, please see the ON Semiconductor Device
Nomenclature document, TND310/D, available at www.onsemi.com
*These devices are beginning End Of Life proceedings.
CAT803, CAT809, CAT810
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10
PACKAGE DIMENSIONS
SOT−23, 3 Lead
CASE 527AG−01
ISSUE O
E1 E
A1
e
e1
b
D
3
12
c
A
TOP VIEW
SIDE VIEW END VIEW
L1 L
Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC TO-236.
SYMBOL MIN NOM MAX
q
θ
A
A1
b
c
D
E
E1
e
e1
L1
0º 8º
L
0.013
0.37
0.085
2.80
2.10
1.20
1.90 BSC
0.40 REF
1.12
0.10
0.50
0.18
3.04
2.64
1.40
0.54 REF
0.95 BSC
0.89
CAT803, CAT809, CAT810
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11
PACKAGE DIMENSIONS
SC−70, 3 Lead, 1.25x2
CASE 419AB−01
ISSUE O
E1
D
A
L
L1 L2
ee
bA1
A2
c
TOP VIEW
SIDE VIEW END VIEW
q1
q1
Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC MO-203.
SYMBOL MIN NOM MAX
E
q
θ
A
A1
b
c
D
E
E1
e
L
0º 8º
L2
0.00
0.15
0.08
0.26
1.80
1.80
1.15
0.65 BSC
0.15 BSC
1.10
0.10
0.30
0.22
0.46
2.20
2.40
1.35
L1
0.80
θ1 4º 10º
A2 0.80 1.00
0.42 REF
0.36
2.00
2.10
1.25
0.90
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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, af filiates,
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CAT803/D
P
UBLICATION ORDERING INFORMATION
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USA/Canada
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