STM809

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Reset circuit

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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

EDA Symbols, Footprints and 3D Models

STMicroelectronics - STM809

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3D models

Quality and Reliability

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.

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
STM809LWX6F Available at 2 distributors

Distributor availability ofSTM809LWX6F

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 120 1 Buy from Distributor
Farnell Element14 EUROPE 705 1 Buy from Distributor

Distributor reported inventory date: 2022-05-23

Distributor Name

RS COMPONENTS

Stock

120

Min.Order

1

Farnell Element14

Stock

705

Min.Order

1

Distributor reported inventory date: 2022-05-23

Active
EAR99 NEC Tape And Reel SOT23 -40 85 4.63
MORE INFO

Voltage Reset 2 (V) (typ):

-

Unit Price (US$):

0.2325

Country of Origin:

MALAYSIA

STM809TWX6F No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape And Reel SOT23 -40 85 3.08
MORE INFO

Voltage Reset 2 (V) (typ):

-

Unit Price (US$):

0.1787

Country of Origin:

MALAYSIA

STM809MWX6F Available at 1 distributors

Distributor availability ofSTM809MWX6F

Distributor Name
Region Stock Min. Order Third party link
Newark Element14 AMERICA 270000 0 Buy from Distributor

Distributor reported inventory date: 2022-05-24

Distributor Name

Newark Element14

Stock

270000

Min.Order

0

Region

AMERICA Buy from Distributor

Distributor reported inventory date: 2022-05-24

Active
EAR99 NEC Tape And Reel SOT23 -40 85 4.38
MORE INFO

Voltage Reset 2 (V) (typ):

-

Unit Price (US$):

0.246

Country of Origin:

MALAYSIA

STM809SWX6F Available at 2 distributors

Distributor availability ofSTM809SWX6F

Distributor Name
Region Stock Min. Order Third party link
COMPEL EUROPE 10713 1 Buy from Distributor
ANGLIA Live EUROPE 2880 10 Buy from Distributor

Distributor reported inventory date: 2022-05-24

Distributor Name

COMPEL

Stock

10713

Min.Order

1

ANGLIA Live

Stock

2880

Min.Order

10

Distributor reported inventory date: 2022-05-24

Active
EAR99 NEC Tape And Reel SOT23 -40 85 2.93
MORE INFO

Voltage Reset 2 (V) (typ):

-

Unit Price (US$):

0.1922

Country of Origin:

MALAYSIA

STM809RWX6F No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape And Reel SOT23 -40 85 2.63
MORE INFO

Voltage Reset 2 (V) (typ):

-

Unit Price (US$):

0.2325

Country of Origin:

MALAYSIA

STM809LWX6F

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

Distributor availability ofSTM809LWX6F

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 120 1 Buy from Distributor
Farnell Element14 EUROPE 705 1 Buy from Distributor

Distributor reported inventory date: 2022-05-23

Distributor Name

RS COMPONENTS

Stock

120

Min.Order

1

Farnell Element14

Stock

705

Min.Order

1

Distributor reported inventory date: 2022-05-23

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT23

Operating Temperature (°C)

(min)

-40

(max)

85

Voltage Reset 1 (V) (typ)

4.63

Voltage Reset 2 (V) (typ)

-

Budgetary Price (US$)* / Qty

Country of Origin

MALAYSIA

STM809TWX6F

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT23

Operating Temperature (°C)

(min)

-40

(max)

85

Voltage Reset 1 (V) (typ)

3.08

Voltage Reset 2 (V) (typ)

-

Budgetary Price (US$)* / Qty

Country of Origin

MALAYSIA

STM809MWX6F

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

Distributor availability ofSTM809MWX6F

Distributor Name
Region Stock Min. Order Third party link
Newark Element14 AMERICA 270000 0 Buy from Distributor

Distributor reported inventory date: 2022-05-24

Distributor Name

Newark Element14

Stock

270000

Min.Order

0

Region

AMERICA Buy from Distributor

Distributor reported inventory date: 2022-05-24

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT23

Operating Temperature (°C)

(min)

-40

(max)

85

Voltage Reset 1 (V) (typ)

4.38

Voltage Reset 2 (V) (typ)

-

Budgetary Price (US$)* / Qty

Country of Origin

MALAYSIA

STM809SWX6F

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

Distributor availability ofSTM809SWX6F

Distributor Name
Region Stock Min. Order Third party link
COMPEL EUROPE 10713 1 Buy from Distributor
ANGLIA Live EUROPE 2880 10 Buy from Distributor

Distributor reported inventory date: 2022-05-24

Distributor Name

COMPEL

Stock

10713

Min.Order

1

ANGLIA Live

Stock

2880

Min.Order

10

Distributor reported inventory date: 2022-05-24

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT23

Operating Temperature (°C)

(min)

-40

(max)

85

Voltage Reset 1 (V) (typ)

2.93

Voltage Reset 2 (V) (typ)

-

Budgetary Price (US$)* / Qty

Country of Origin

MALAYSIA

STM809RWX6F

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT23

Operating Temperature (°C)

(min)

-40

(max)

85

Voltage Reset 1 (V) (typ)

2.63

Voltage Reset 2 (V) (typ)

-

Budgetary Price (US$)* / Qty

Country of Origin

MALAYSIA

(*) 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