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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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min
max
STM810SWX6F SOT23 Tape And Reel 2.93 - -40 85
Active
0.18
MORE INFO

Quantity:

1000

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

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Distributor availability ofSTM810SWX6F

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DIGIKEY WORLDWIDE 9357 1 Order Now
MOUSER WORLDWIDE 10731 1 Order Now

Distributor reported inventory date: 2019-12-12

Distributor Name

DIGIKEY

Stock

9357

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1

Region

WORLDWIDE Order Now

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Stock

10731

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1

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Distributor reported inventory date: 2019-12-12

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STM810LWX6F SOT23 Tape And Reel 4.63 - -40 85
Active
0.18
MORE INFO

Quantity:

1000

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

Check Availability

Distributor availability ofSTM810LWX6F

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DIGIKEY WORLDWIDE 4544 1 Order Now
Farnell Element14 EUROPE 4979 1 Order Now
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4544

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4979

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6000

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3000

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STM810RWX6F SOT23 Tape And Reel 2.63 - -40 85
Active
0.18
MORE INFO

Quantity:

1000

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

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Distributor availability ofSTM810RWX6F

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DIGIKEY WORLDWIDE 6000 1 Order Now
MOUSER WORLDWIDE 4157 1 Order Now

Distributor reported inventory date: 2019-12-12

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DIGIKEY

Stock

6000

Min.Order

1

Region

WORLDWIDE Order Now

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Stock

4157

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1

Region

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Distributor reported inventory date: 2019-12-12

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STM810MWX6F SOT23 Tape And Reel 4.38 - -40 85
Active
0.18
MORE INFO

Quantity:

1000

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

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Distributor availability ofSTM810MWX6F

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DIGIKEY WORLDWIDE 2780 1 Order Now
ARROW EUROPE 9000 0 Order Now
ARROW AMERICA 865 1 Order Now
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ANGLIA Live EUROPE 25 3000 Order Now

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2780

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9000

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0

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ARROW

Stock

865

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1

Region

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Stock

6384

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1

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Stock

25

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3000

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STM810TWX6F SOT23 Tape And Reel 3.08 - -40 85
Active
0.18
MORE INFO

Quantity:

1000

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

Check Availability

Distributor availability ofSTM810TWX6F

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Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1391 1 Order Now
RS COMPONENTS EUROPE 1000 1 Order Now
ARROW AMERICA 1795 1 Order Now
MOUSER WORLDWIDE 11951 1 Order Now
Farnell Element14 EUROPE 1368 1 Order Now

Distributor reported inventory date: 2019-12-12

Distributor Name

DIGIKEY

Stock

1391

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1000

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

1795

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

11951

Min.Order

1

Region

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Farnell Element14

Stock

1368

Min.Order

1

Region

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Distributor reported inventory date: 2019-12-12

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STM810SWX6F

Package

SOT23

Packing Type

Tape And Reel

Unit Price (US$)

0.18*

Distributor availability ofSTM810SWX6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 9357 1 Order Now
MOUSER WORLDWIDE 10731 1 Order Now

Distributor reported inventory date: 2019-12-12

Distributor Name

DIGIKEY

Stock

9357

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

10731

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-12-12

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$)

0.18

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

STM810LWX6F

Package

SOT23

Packing Type

Tape And Reel

Unit Price (US$)

0.18*

Distributor availability ofSTM810LWX6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4544 1 Order Now
Farnell Element14 EUROPE 4979 1 Order Now
RUTRONIK EUROPE 6000 3000 Order Now

Distributor reported inventory date: 2019-12-12

Distributor Name

DIGIKEY

Stock

4544

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4979

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

6000

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-12-12

Voltage Reset 1 (V) (typ)

4.63

Voltage Reset 2 (V) (typ)

-

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

0.18

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

STM810RWX6F

Package

SOT23

Packing Type

Tape And Reel

Unit Price (US$)

0.18*

Distributor availability ofSTM810RWX6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6000 1 Order Now
MOUSER WORLDWIDE 4157 1 Order Now

Distributor reported inventory date: 2019-12-12

Distributor Name

DIGIKEY

Stock

6000

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

4157

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-12-12

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$)

0.18

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

STM810MWX6F

Package

SOT23

Packing Type

Tape And Reel

Unit Price (US$)

0.18*

Distributor availability ofSTM810MWX6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2780 1 Order Now
ARROW EUROPE 9000 0 Order Now
ARROW AMERICA 865 1 Order Now
MOUSER WORLDWIDE 6384 1 Order Now
ANGLIA Live EUROPE 25 3000 Order Now

Distributor reported inventory date: 2019-12-12

Distributor Name

DIGIKEY

Stock

2780

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

9000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

865

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

6384

Min.Order

1

Region

WORLDWIDE Order Now

ANGLIA Live

Stock

25

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-12-12

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$)

0.18

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

STM810TWX6F

Package

SOT23

Packing Type

Tape And Reel

Unit Price (US$)

0.18*

Distributor availability ofSTM810TWX6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1391 1 Order Now
RS COMPONENTS EUROPE 1000 1 Order Now
ARROW AMERICA 1795 1 Order Now
MOUSER WORLDWIDE 11951 1 Order Now
Farnell Element14 EUROPE 1368 1 Order Now

Distributor reported inventory date: 2019-12-12

Distributor Name

DIGIKEY

Stock

1391

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1000

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

1795

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

11951

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1368

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-12-12

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$)

0.18

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) 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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00 Files selected for download

Technical Documentation

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      DS3546
      Reset circuit
      5.1
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      Reset circuit

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      AN1790
      How to connect ST reset circuits to a microprocessor
      1.4
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      How to control power-up/reset and monitor the voltage in microprocessor systems using ST reset circuits
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      How to connect ST reset circuits to a microprocessor

      AN1772

      How to control power-up/reset and monitor the voltage in microprocessor systems using ST reset circuits

    • Description Version Size Action
      TN0941
      Reset and supervisor ICs: frequently asked questions (FAQ)
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      Reset and supervisor ICs: frequently asked questions (FAQ)

Publications and Collaterals

    • Description Version Size Action
      Resets and supervisors - portfolio overview 1.0
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      Resets and supervisors - portfolio overview

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STM810LWX6F
Active
SOT23 Industrial Ecopack3
STM810MWX6F
Active
SOT23 Industrial Ecopack3
STM810RWX6F
Active
SOT23 Industrial Ecopack3
STM810SWX6F
Active
SOT23 Industrial Ecopack3
STM810TWX6F
Active
SOT23 Industrial Ecopack3

STM810LWX6F

Package:

SOT23

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM810MWX6F

Package:

SOT23

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM810RWX6F

Package:

SOT23

Material Declaration**:

Marketing Status

Active

Package

SOT23

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM810SWX6F

Package:

SOT23

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM810TWX6F

Package:

SOT23

Material Declaration**:

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.

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