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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
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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
STM811SW16F SOT-143 4 Tape And Reel 2.93 - -40 85
Active
0.33
MORE INFO

Quantity:

1000

ECCN (US):

EAR99

Country of Origin:

PHILIPPINES

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STM811RW16F SOT-143 4 Tape And Reel 2.63 - -40 85
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0.33
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Quantity:

1000

ECCN (US):

EAR99

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STM811MW16F SOT-143 4 Tape And Reel 4.38 - -40 85
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0.33
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Quantity:

1000

ECCN (US):

EAR99

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PHILIPPINES

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STM811TW16F SOT-143 4 Tape And Reel 3.08 - -40 85
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0.33
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ECCN (US):

EAR99

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STM811LW16F SOT-143 4 Tape And Reel 4.63 - -40 85
Active
0.33
MORE INFO

Quantity:

1000

ECCN (US):

EAR99

Country of Origin:

PHILIPPINES

Check Availability

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STM811SW16F

Package

SOT-143 4

Packing Type

Tape And Reel

Unit Price (US$)

0.33*

Distributor availability ofSTM811SW16F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 7887 1 Order Now
RS COMPONENTS EUROPE 9410 10 Order Now
AVNET AMERICA 607 0 Order Now
FUTURE WORLDWIDE 8550 1 Order Now
ARROW EUROPE 3000 0 Order Now
MOUSER WORLDWIDE 7448 1 Order Now
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RUTRONIK EUROPE 3000 3000 Order Now

Distributor reported inventory date: 2019-09-24

Distributor Name

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Stock

7887

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

9410

Min.Order

10

Region

EUROPE Order Now

AVNET

Stock

607

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

8550

Min.Order

1

Region

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Stock

3000

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Region

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Stock

7448

Min.Order

1

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8061

Min.Order

1

Region

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Stock

3000

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-24

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$)

0.33

Quantity

1000

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

STM811RW16F

Package

SOT-143 4

Packing Type

Tape And Reel

Unit Price (US$)

0.33*

Distributor availability ofSTM811RW16F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 8069 1 Order Now
RS COMPONENTS EUROPE 2890 1 Order Now
FUTURE WORLDWIDE 12100 1 Order Now
MOUSER WORLDWIDE 5192 1 Order Now

Distributor reported inventory date: 2019-09-24

Distributor Name

DIGIKEY

Stock

8069

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2890

Min.Order

1

Region

EUROPE Order Now

FUTURE

Stock

12100

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

5192

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-09-24

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$)

0.33

Quantity

1000

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

STM811MW16F

Package

SOT-143 4

Packing Type

Tape And Reel

Unit Price (US$)

0.33*

Distributor availability ofSTM811MW16F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4113 1 Order Now
ARROW EUROPE 3000 0 Order Now
Newark Element14 AMERICA 50 0 Order Now
MOUSER WORLDWIDE 5409 1 Order Now
Farnell Element14 EUROPE 1627 1 Order Now

Distributor reported inventory date: 2019-09-24

Distributor Name

DIGIKEY

Stock

4113

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

3000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

50

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5409

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1627

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-24

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$)

0.33

Quantity

1000

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

STM811TW16F

Package

SOT-143 4

Packing Type

Tape And Reel

Unit Price (US$)

0.33*

Distributor availability ofSTM811TW16F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 10013 1 Order Now
RS COMPONENTS EUROPE 3050 5 Order Now
AVNET AMERICA 7040 0 Order Now
FUTURE WORLDWIDE 12560 1 Order Now
ARROW AMERICA 14 1 Order Now
P&S ASIA/PACIFIC 415 1 Order Now
MOUSER WORLDWIDE 7429 1 Order Now
Farnell Element14 EUROPE 15916 1 Order Now
ANGLIA Live EUROPE 276500 10 Order Now
RUTRONIK EUROPE 3000 3000 Order Now

Distributor reported inventory date: 2019-09-24

Distributor Name

DIGIKEY

Stock

10013

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

3050

Min.Order

5

Region

EUROPE Order Now

AVNET

Stock

7040

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

12560

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

14

Min.Order

1

Region

AMERICA Order Now

P&S

Stock

415

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

7429

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

15916

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

276500

Min.Order

10

Region

EUROPE Order Now

RUTRONIK

Stock

3000

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-24

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$)

0.33

Quantity

1000

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

STM811LW16F

Package

SOT-143 4

Packing Type

Tape And Reel

Unit Price (US$)

0.33*

Distributor availability ofSTM811LW16F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3903 1 Order Now
RS COMPONENTS EUROPE 1510 1 Order Now
ARROW EUROPE 3000 0 Order Now
P&S ASIA/PACIFIC 703 1 Order Now
MOUSER WORLDWIDE 5057 1 Order Now

Distributor reported inventory date: 2019-09-24

Distributor Name

DIGIKEY

Stock

3903

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1510

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

3000

Min.Order

0

Region

EUROPE Order Now

P&S

Stock

703

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

5057

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-09-24

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$)

0.33

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**
STM811LW16F
Active
SOT-143 4 Industrial Ecopack3
STM811MW16F
Active
SOT-143 4 Industrial Ecopack3
STM811RW16F
Active
SOT-143 4 Industrial Ecopack3
STM811SW16F
Active
SOT-143 4 Industrial Ecopack3
STM811TW16F
Active
SOT-143 4 Industrial Ecopack3

STM811LW16F

Package:

SOT-143 4

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT-143 4

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM811MW16F

Package:

SOT-143 4

Material Declaration**:

Marketing Status

Active

Package

SOT-143 4

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM811RW16F

Package:

SOT-143 4

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT-143 4

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM811SW16F

Package:

SOT-143 4

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT-143 4

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM811TW16F

Package:

SOT-143 4

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT-143 4

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.