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  • The STM809/810/811/812 MICROPROCESSOR RESET Circuits are low-power supervisory devices used to monitor power supplies. They perform a single function: asserting a reset signal whenever the VCC supply voltage drops below a preset value and keeping it asserted until VCC has risen above the preset threshold for a minimum period of time (trec). The STM811/812 also provide a push-button reset input (MR).

    Key Features

    • Lead-free, small SOT23 and SOT143 package
    • Operating temperature: –40 °C to 85 °C (industrial grade)
    • Precision monitoring of 3 V, 3.3 V, and 5 V supply voltages
    • 140 ms reset pulse width (min)
    • Two output configurationsPush-pull RST output (STM809/811)Push-pull RST output (STM810/812)
    • Guaranteed RST/RST assertion down to VCC = 1.0 V
    • Low supply current - 6 µA (typ)

Circuit Diagram

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Part Number
Package
Packing Type
Voltage Reset 1 (V) (typ)
Voltage Reset 2 (V) (typ)
Temperature (°C) Marketing Status
Budgetary Price (US$)*
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max
STM809LWX6F SOT23 Tape And Reel 2.63 - -40 85
Active
0.17
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Quantity:

1000

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

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STM809TWX6F SOT23 Tape And Reel 3.08 - -40 85
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STM809SWX6F SOT23 Tape And Reel 2.93 - -40 85
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ECCN (US):

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STM809RWX6F SOT23 Tape And Reel 2.63 - -40 85
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0.17
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Quantity:

1000

ECCN (US):

EAR99

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STM809LWX6F

Package

SOT23

Packing Type

Tape And Reel

Unit Price (US$)

0.17*

Distributor availability ofSTM809LWX6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1648 1 Order Now
RS COMPONENTS EUROPE 2495 1 Order Now
FUTURE WORLDWIDE 21000 3000 Order Now
ARROW EUROPE 12002 0 Order Now
P&S ASIA/PACIFIC 3100 1 Order Now
MOUSER WORLDWIDE 7779 1 Order Now
Farnell Element14 EUROPE 4612 1 Order Now
RUTRONIK EUROPE 6000 3000 Order Now

Distributor reported inventory date: 2019-09-20

Distributor Name

DIGIKEY

Stock

1648

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2495

Min.Order

1

Region

EUROPE Order Now

FUTURE

Stock

21000

Min.Order

3000

Region

WORLDWIDE Order Now

ARROW

Stock

12002

Min.Order

0

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P&S

Stock

3100

Min.Order

1

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Stock

7779

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4612

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6000

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Distributor reported inventory date: 2019-09-20

Voltage Reset 1 (V) (typ)

2.63

Voltage Reset 2 (V) (typ)

-

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

0.17

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

STM809TWX6F

Package

SOT23

Packing Type

Tape And Reel

Unit Price (US$)

0.17*

Distributor availability ofSTM809TWX6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 9488 1 Order Now
RS COMPONENTS EUROPE 102 1 Order Now
AVNET AMERICA 63000 0 Order Now
FUTURE WORLDWIDE 189000 3000 Order Now
ARROW EUROPE 15000 0 Order Now
ARROW AMERICA 6000 3000 Order Now
MOUSER WORLDWIDE 9662 1 Order Now
Farnell Element14 EUROPE 7247 1 Order Now
RUTRONIK EUROPE 18000 3000 Order Now

Distributor reported inventory date: 2019-09-20

Distributor Name

DIGIKEY

Stock

9488

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

102

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

63000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

189000

Min.Order

3000

Region

WORLDWIDE Order Now

ARROW

Stock

15000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

6000

Min.Order

3000

Region

AMERICA Order Now

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Stock

9662

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Stock

7247

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1

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Stock

18000

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3000

Region

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Distributor reported inventory date: 2019-09-20

Voltage Reset 1 (V) (typ)

3.08

Voltage Reset 2 (V) (typ)

-

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

0.17

Quantity

1000

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

STM809MWX6F

Package

SOT23

Packing Type

Tape And Reel

Unit Price (US$)

0.17*

Distributor availability ofSTM809MWX6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 18 1 Order Now
RS COMPONENTS EUROPE 3300 1 Order Now
ARROW AMERICA 12000 3000 Order Now
MOUSER WORLDWIDE 5364 1 Order Now
Farnell Element14 EUROPE 5652 1 Order Now

Distributor reported inventory date: 2019-09-20

Distributor Name

DIGIKEY

Stock

18

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

3300

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

12000

Min.Order

3000

Region

AMERICA Order Now

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Stock

5364

Min.Order

1

Region

WORLDWIDE Order Now

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Stock

5652

Min.Order

1

Region

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Distributor reported inventory date: 2019-09-20

Voltage Reset 1 (V) (typ)

4.38

Voltage Reset 2 (V) (typ)

-

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

0.17

Quantity

1000

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

STM809SWX6F

Package

SOT23

Packing Type

Tape And Reel

Unit Price (US$)

0.17*

Distributor availability ofSTM809SWX6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 19950 1 Order Now
RS COMPONENTS EUROPE 450 10 Order Now
AVNET AMERICA 9000 0 Order Now
FUTURE WORLDWIDE 14193 1 Order Now
ARROW EUROPE 9000 0 Order Now
MOUSER WORLDWIDE 14657 1 Order Now
Farnell Element14 EUROPE 9074 1 Order Now
ANGLIA Live EUROPE 25000 10 Order Now

Distributor reported inventory date: 2019-09-20

Distributor Name

DIGIKEY

Stock

19950

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

450

Min.Order

10

Region

EUROPE Order Now

AVNET

Stock

9000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

14193

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

9000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

14657

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

9074

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

25000

Min.Order

10

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-20

Voltage Reset 1 (V) (typ)

2.93

Voltage Reset 2 (V) (typ)

-

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

0.17

Quantity

1000

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

STM809RWX6F

Package

SOT23

Packing Type

Tape And Reel

Unit Price (US$)

0.17*

Distributor availability ofSTM809RWX6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4561 1 Order Now
RS COMPONENTS EUROPE 60 1 Order Now
AVNET AMERICA 21000 0 Order Now
FUTURE WORLDWIDE 9000 3000 Order Now
ARROW AMERICA 12097 1 Order Now
MOUSER WORLDWIDE 4224 1 Order Now
Farnell Element14 EUROPE 2190 1 Order Now
ANGLIA Live EUROPE 3000 500 Order Now

Distributor reported inventory date: 2019-09-20

Distributor Name

DIGIKEY

Stock

4561

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

60

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

21000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

9000

Min.Order

3000

Region

WORLDWIDE Order Now

ARROW

Stock

12097

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

4224

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2190

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

3000

Min.Order

500

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-20

Voltage Reset 1 (V) (typ)

2.63

Voltage Reset 2 (V) (typ)

-

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

0.17

Quantity

1000

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

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Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STM809LWX6F
Active
SOT23 Industrial Ecopack3
STM809MWX6F
Active
SOT23 Industrial Ecopack3
STM809RWX6F
Active
SOT23 Industrial Ecopack3
STM809SWX6F
Active
SOT23 Industrial Ecopack3
STM809TWX6F
Active
SOT23 Industrial Ecopack3

STM809LWX6F

Package:

SOT23

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM809MWX6F

Package:

SOT23

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM809RWX6F

Package:

SOT23

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM809SWX6F

Package:

SOT23

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM809TWX6F

Package:

SOT23

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23

Grade

Industrial

RoHS Compliance Grade

Ecopack3

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.