ON Semiconductor MAX809 Technical data

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 VCC 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 VCC falling
through the reset voltage threshold. Reset is maintained active for a
timeout period which is trimmed by the factory after VCC 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 VCC line. Low supply current of 0.5 mA (V
devices suitable for battery powered applications.

Features

• Precision V

Monitor for 1.5 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V, and 5.0 V

CC

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

= 1.0 V.

CC

• Low Supply Current

• Compatible with Hot Plug Applications

• V

Transient Immunity

CC

• No External Components

• Wide Operating Temperature: −40°C to 105°C

• Pb−Free Packages are Available

Typical Applications

• Computers

• Embedded Systems

• Battery Powered Equipment

• Critical Microprocessor Power Supply Monitoring

V

CC

V

CC

MAX809/810

RESET

RESET

PROCESSOR
RESET

INPUT

= 3.2 V) makes these

CC

V

CC

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MARKING
DIAGRAM

3

SOT−23

(TO−236)

1

2

xxx = Specific Device Code
M = Date Code
G = Pb−Free Package
(Note: Microdot may be in either location)

GND

RESET
RESET

NOTE: RESET is for MAX809

ORDERING INFORMATION

See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.

DEVICE MARKING INFORMATION

See general marking information in the device marking
section on page 8 of this data sheet.

CASE 318

SC−70

(SOT−323)

CASE 419

PIN CONFIGURATION

1

2

SOT−23/SC−70

(Top View)

RESET is for MAX810

3
xxx MG

G

21

xx MG

G

1

V

3

CC

GND GND

Figure 1. Typical Application Diagram

© Semiconductor Components Industries, LLC, 2007

February, 2007 − Rev. 15

1 Publication Order Number:

MAX809S/D

MAX809 Series, MAX810 Series

T

T

R

qJA

PIN DESCRIPTION

Pin No. Symbol Description

1 GND Ground
2 RESET (MAX809) RESET output remains low while VCC is below the reset voltage threshold, and for a reset timeout

2 RESET (MAX810) RESET output remains high while VCC is below the reset voltage threshold, and for a reset timeout

3 V

CC

ABSOLUTE MAXIMUM RATINGS

Power Supply Voltage (VCC to GND) V
RESET Output Voltage (CMOS) −0.3 to (VCC + 0.3) V
Input Current, V
Output Current, RESET 20 mA
dV/dt (VCC) 100
Thermal Resistance, Junction−to−Air (Note 1) SOT−23

Operating Junction Temperature Range T
Storage Temperature Range T
Lead Temperature (Soldering, 10 Seconds) T
ESD Protection

Latchup Current Maximum Rating: Following Specification JESD78 Class II

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 10mm2 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.

CC

Human Body Model (HBM): Following Specification JESD22−A114

Machine Model (MM): Following Specification JESD22−A115

*

J(max)

P

+

D

period after VCC rises above reset threshold

period after VCC rises above reset threshold
Supply Voltage (Typ)

Rating Symbol Value Unit

CC

−0.3 to 6.0 V

20 mA

SC−70

R

q

JA

J
stg
sol

301
314

−40 to +105 °C

−65 to +150 °C
+260 °C

2000

200

I

Positive

Latchup

Negative

A

with T

J(max)

= 150°C

200
200

V/msec

°C/W

V

mA

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MAX809 Series, MAX810 Series

ELECTRICAL CHARACTERISTICS T

Characteristic Symbol Min Typ Max Unit

VCC Range

TA = 0°C to +70°C
TA = −40°C to +105°C

Supply Current

VCC = 3.3 V

TA = −40°C to +85°C
TA = 85°C to +105°C

VCC = 5.5 V

TA = −40°C to +85°C
TA = 85°C to +105°C

Reset Threshold (Vin Decreasing) (Note 4)

MAX809SN490

TA = +25°C
TA = −40°C to +85°C
TA = +85°C to +105°C

MAX8xxLTR, MAX8xxSQ463

TA = +25°C
TA = −40°C to +85°C
TA = +85°C to +105°C

MAX809HTR

TA = +25°C
TA = −40°C to +85°C
TA = +85°C to +105°C

MAX8xxMTR, MAX8xxSQ438

TA = +25°C
TA = −40°C to +85°C
TA = +85°C to +105°C

MAX809JTR, MAX8xxSQ400

TA = +25°C
TA = −40°C to +85°C
TA = +85°C to +105°C

MAX8xxTTR, MAX809SQ308

TA = +25°C
TA = −40°C to +85°C
TA = +85°C to +105°C

MAX8xxSTR, MAX8xxSQ293

TA = +25°C
TA = −40°C to +85°C
TA = +85°C to +105°C

MAX8xxRTR, MAX8xxSQ263

TA = +25°C
TA = −40°C to +85°C
TA = +85°C to +105°C

MAX809SN232, MAX809SQ232

TA = +25°C
TA = −40°C to +85°C
TA = +85°C to +105°C

MAX809SN160

TA = +25°C
TA = −40°C to +85°C
TA = +85°C to +105°C

MAX809SN120, MAX8xxSQ120

TA = +25°C
TA = −40°C to +85°C
TA = +85°C to +105°C

3. Production testing done at TA = 25°C, over temperature limits guaranteed by design.

4. Contact your ON Semiconductor sales representative for other threshold voltage options.

= −40°C to +105°C unless otherwise noted. Typical values are at TA = +25°C. (Note 3)

A

I

CC

V

TH

1.0

1.2

−

−

−

−

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

−

−

0.5

−

0.8

−

4.9

−

−

4.63

−

−

4.55 4.62

4.38 4.45

4.00

−

−

3.08

−

−

2.93

−

−

2.63

−

−

2.32

−

−

1.60

−

−

1.20

−

−

5.5

5.5

1.2

2.0

1.8

2.5

4.97

5.02

5.14

4.70

4.75

4.86

4.67

4.78

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

V

mA

V

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MAX809 Series, MAX810 Series

ELECTRICAL CHARACTERISTICS (continued) T

= −40°C to +105°C unless otherwise noted. Typical values are at

A

TA = +25°C. (Note 5)

Characteristic Symbol Min Typ Max Unit

Detector Voltage Threshold Temperature Coefficient − 30 − ppm/°C
VCC to Reset Delay VCC = VTH to (VTH − 100 mV) − 10 −
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)

VCC = VTH − 0.2 V

1.6 V v VTH v 2.0 V, I

2.1 V v VTH v 4.0 V, I

4.1 V v VTH v 4.9 V, I

SINK
SINK
SINK

= 0.5 mA
= 1.2 mA
= 3.2 mA

RESET Output Voltage High (No Load) (MAX809)

VCC = VTH + 0.2 V

1.6 V v VTH v 2.4 V, I

2.5 V v VTH v 4.9 V, I

SOURCE
SOURCE

= 200 mA
= 500 mA

RESET Output Voltage High (No Load) (MAX810)

VCC = VTH + 0.2 V

1.6 V v VTH v 2.4 V, I

2.5 V v VTH v 4.9 V, I

SOURCE
SOURCE

= 200 mA
= 500 mA

RESET Output Voltage Low (No Load) (MAX810)

VCC = VTH − 0.2 V

1.6 V v VTH v 2.0 V, I

2.1 V v VTH v 4.0 V, I

4.1 V v VTH v 4.9 V, I

SINK
SINK
SINK

= 0.5 mA
= 1.2 mA
= 3.2 mA

t

RP

V

OL

V

OH

V

OH

V

OL

1.0
20

100
140

−

3.3

−

−

−

330
460

− − 0.3 V

0.8 V

0.8 V

CC

CC

− − V

− − V

− − 0.3 V

66

msec

msec

5. Production testing done at TA = 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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