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).
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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 configurations
Push-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
Recommended for you
Related Applications
Industrial
All resources
Resource title | Version | Latest update |
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Product Specifications (1)
Resource title | Version | Latest update | ||
---|---|---|---|---|
5.1 | 19 Sep 2016 | 19 Sep 2016 |
Application Notes (2)
Resource title | Version | Latest update | ||
---|---|---|---|---|
1.4 | 13 Sep 2018 | 13 Sep 2018 | ||
1.5 | 13 Sep 2018 | 13 Sep 2018 |
Technical Notes & Articles (1)
Resource title | Version | Latest update | ||
---|---|---|---|---|
1.0 | 10 Oct 2022 | 10 Oct 2022 |
Flyers (1)
Resource title | Version | Latest update | ||
---|---|---|---|---|
1.0 | 01 Aug 2015 | 01 Aug 2015 |
EDA Symbols, Footprints and 3D Models
STMicroelectronics - STM812
Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.
Please select one model supplier :
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Symbols
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Footprints
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3D models
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 |
Marketing Status
Package
SOT-143 4
Grade
Industrial
RoHS Compliance Grade
Ecopack3
Marketing Status
Package
SOT-143 4
Grade
Industrial
RoHS Compliance Grade
Ecopack3
Marketing Status
Package
SOT-143 4
Grade
Industrial
RoHS Compliance Grade
Ecopack3
Marketing Status
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 | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | ||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
min | max | |||||||||||||||||||||||||||||||||||||
STM812TW16F | | | Available at 3 distributors Distributor availability of STM812TW16F
Distributor reported inventory date: 2/27/2025 | | | | Buy from Distributor | | ||||||||||||||||||||||||||||||
STM812SW16F | | | Available at 2 distributors Distributor availability of STM812SW16F
Distributor reported inventory date: 2/27/2025 | | | | Buy from Distributor | | ||||||||||||||||||||||||||||||
STM812LW16F | | | Available at 2 distributors Distributor availability of STM812LW16F
Distributor reported inventory date: 2/27/2025 | | | | Buy from Distributor | | ||||||||||||||||||||||||||||||
STM812RW16F | | | Available at distributors Distributor availability of STM812RW16F
Distributor reported inventory date: | | | | Buy from Distributor | | ||||||||||||||||||||||||||||||
STM812MW16F | | | Available at 2 distributors Distributor availability of STM812MW16F
Distributor reported inventory date: 2/27/2025 | | | | Buy from Distributor | |
STM812TW16F Active
Part Number:
STM812TW16F
Operating Temperature (°C)
Min:
Max:
MOUSER
Stock
5154Min.Order
1FUTURE
Stock
6000Min.Order
0DIGIKEY
Stock
1958Min.Order
1Distributor reported inventory date: 2/27/2025
Stock
Min.Order
STM812SW16F Active
Part Number:
STM812SW16F
Operating Temperature (°C)
Min:
Max:
MOUSER
Stock
2608Min.Order
1DIGIKEY
Stock
1927Min.Order
1Distributor reported inventory date: 2/27/2025
Stock
Min.Order
STM812LW16F Active
Part Number:
STM812LW16F
Operating Temperature (°C)
Min:
Max:
ANGLIA Live
Stock
30000Min.Order
3000DIGIKEY
Stock
8084Min.Order
1Distributor reported inventory date: 2/27/2025
Stock
Min.Order
STM812RW16F Active
Part Number:
STM812RW16F
Operating Temperature (°C)
Min:
Max:
Distributor reported inventory date:
Stock
Min.Order
STM812MW16F Active
Part Number:
STM812MW16F
Operating Temperature (°C)
Min:
Max:
MOUSER
Stock
2364Min.Order
1DIGIKEY
Stock
2330Min.Order
1Distributor reported inventory date: 2/27/2025
Stock
Min.Order
(*) 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