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Product overview

Description

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).
  • All 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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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STM812LW16F
Active
SOT-143 4 Industrial Ecopack3
STM812MW16F
Active
SOT-143 4 Industrial Ecopack3
STM812RW16F
Active
SOT-143 4 Industrial Ecopack3
STM812SW16F
Active
SOT-143 4 Industrial Ecopack3
STM812TW16F
Active
SOT-143 4 Industrial Ecopack3

STM812LW16F

Package:

SOT-143 4

Material Declaration**:

Marketing Status

Active

Package

SOT-143 4

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM812MW16F

Package:

SOT-143 4

Material Declaration**:

Marketing Status

Active

Package

SOT-143 4

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM812RW16F

Package:

SOT-143 4

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT-143 4

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM812SW16F

Package:

SOT-143 4

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT-143 4

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM812TW16F

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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Voltage Reset 1 (V) (typ)
Budgetary Price (US$)*/Qty
More info
min
max
STM812TW16F Available at 3 distributors

Distributor availability ofSTM812TW16F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2900 1 Order Now
RS COMPONENTS EUROPE 1000 1 Order Now
MOUSER WORLDWIDE 549 1 Order Now

Distributor reported inventory date: 2021-09-12

Distributor Name

DIGIKEY

Stock

2900

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1000

Min.Order

1

Region

EUROPE Order Now

MOUSER

Stock

549

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2021-09-12

Buy Direct
Active
EAR99 NEC Tape And Reel SOT-143 4 -40 85 3.08 0.3795 / 1k
MORE INFO

Voltage Reset 2 (V) (typ):

-

Unit Price (US$):

0.3795

Country of Origin:

PHILIPPINES

STM812SW16F Available at 1 distributors

Distributor availability ofSTM812SW16F

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 5538 1 Order Now

Distributor reported inventory date: 2021-09-12

Distributor Name

MOUSER

Stock

5538

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2021-09-12

Buy Direct
Active
EAR99 NEC Tape And Reel SOT-143 4 -40 85 2.93 0.3795 / 1k
MORE INFO

Voltage Reset 2 (V) (typ):

-

Unit Price (US$):

0.3795

Country of Origin:

PHILIPPINES

STM812LW16F Available at 3 distributors

Distributor availability ofSTM812LW16F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2775 1 Order Now
MOUSER WORLDWIDE 1274 1 Order Now
ANGLIA Live EUROPE 30000 3000 Order Now

Distributor reported inventory date: 2021-09-12

Distributor Name

DIGIKEY

Stock

2775

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

1274

Min.Order

1

Region

WORLDWIDE Order Now

ANGLIA Live

Stock

30000

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2021-09-12

Buy Direct
Active
EAR99 NEC Tape And Reel SOT-143 4 -40 85 4.63 0.3795 / 1k
MORE INFO

Voltage Reset 2 (V) (typ):

-

Unit Price (US$):

0.3795

Country of Origin:

PHILIPPINES

STM812RW16F No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape And Reel SOT-143 4 -40 85 2.63 0.3795 / 1k
MORE INFO

Voltage Reset 2 (V) (typ):

-

Unit Price (US$):

0.3795

Country of Origin:

PHILIPPINES

STM812MW16F Available at 2 distributors

Distributor availability ofSTM812MW16F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1955 1 Order Now
MOUSER WORLDWIDE 4795 1 Order Now

Distributor reported inventory date: 2021-09-12

Distributor Name

DIGIKEY

Stock

1955

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

4795

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2021-09-12

Buy Direct
Active
EAR99 NEC Tape And Reel SOT-143 4 -40 85 4.38 0.3795 / 1k
MORE INFO

Voltage Reset 2 (V) (typ):

-

Unit Price (US$):

0.3795

Country of Origin:

PHILIPPINES

STM812TW16F

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.3795 / 1k

Distributor availability ofSTM812TW16F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2900 1 Order Now
RS COMPONENTS EUROPE 1000 1 Order Now
MOUSER WORLDWIDE 549 1 Order Now

Distributor reported inventory date: 2021-09-12

Distributor Name

DIGIKEY

Stock

2900

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1000

Min.Order

1

Region

EUROPE Order Now

MOUSER

Stock

549

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2021-09-12

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT-143 4

Operating Temperature (°C)

(min)

-40

(max)

85

Voltage Reset 1 (V) (typ)

3.08

Voltage Reset 2 (V) (typ)

-

Budgetary Price (US$)* / Qty

0.3795 / 1k

Country of Origin

PHILIPPINES

STM812SW16F

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.3795 / 1k

Distributor availability ofSTM812SW16F

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 5538 1 Order Now

Distributor reported inventory date: 2021-09-12

Distributor Name

MOUSER

Stock

5538

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2021-09-12

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT-143 4

Operating Temperature (°C)

(min)

-40

(max)

85

Voltage Reset 1 (V) (typ)

2.93

Voltage Reset 2 (V) (typ)

-

Budgetary Price (US$)* / Qty

0.3795 / 1k

Country of Origin

PHILIPPINES

STM812LW16F

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.3795 / 1k

Distributor availability ofSTM812LW16F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2775 1 Order Now
MOUSER WORLDWIDE 1274 1 Order Now
ANGLIA Live EUROPE 30000 3000 Order Now

Distributor reported inventory date: 2021-09-12

Distributor Name

DIGIKEY

Stock

2775

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

1274

Min.Order

1

Region

WORLDWIDE Order Now

ANGLIA Live

Stock

30000

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2021-09-12

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT-143 4

Operating Temperature (°C)

(min)

-40

(max)

85

Voltage Reset 1 (V) (typ)

4.63

Voltage Reset 2 (V) (typ)

-

Budgetary Price (US$)* / Qty

0.3795 / 1k

Country of Origin

PHILIPPINES

STM812RW16F

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.3795 / 1k

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT-143 4

Operating Temperature (°C)

(min)

-40

(max)

85

Voltage Reset 1 (V) (typ)

2.63

Voltage Reset 2 (V) (typ)

-

Budgetary Price (US$)* / Qty

0.3795 / 1k

Country of Origin

PHILIPPINES

STM812MW16F

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.3795 / 1k

Distributor availability ofSTM812MW16F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1955 1 Order Now
MOUSER WORLDWIDE 4795 1 Order Now

Distributor reported inventory date: 2021-09-12

Distributor Name

DIGIKEY

Stock

1955

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

4795

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2021-09-12

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT-143 4

Operating Temperature (°C)

(min)

-40

(max)

85

Voltage Reset 1 (V) (typ)

4.38

Voltage Reset 2 (V) (typ)

-

Budgetary Price (US$)* / Qty

0.3795 / 1k

Country of Origin

PHILIPPINES

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