STM809:Active Low, Push-Pull

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)
Product Specifications
DescriptionVersionSize
DS3546: Reset circuit5.1413 KB
Application Notes
DescriptionVersionSize
AN1790: How to connect ST reset circuits to a microprocessor1.484 KB
AN1772: How to control power-up/reset and monitor the voltage in microprocessor systems using ST reset circuits1.575 KB
Technical Notes & Articles
DescriptionVersionSize
TN0941: Reset and supervisor ICs: frequently asked questions (FAQ)1.0328 KB
Flyers
DescriptionVersionSize
Resets and supervisors - portfolio overview1.01 MB
Sample & Buy
Part NumberPackagePacking TypeVoltage Reset 1 (V) (typ)Voltage Reset 2 (V) (typ)Operating Temperature (°C) (min)Operating Temperature (°C) (max)Unit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
STM809LWX6FSOT23Tape And Reel2.63--40850.171000NECEAR99MALAYSIA
STM809TWX6FSOT23Tape And Reel3.08--40850.171000NECEAR99PHILIPPINES
STM809MWX6FSOT23Tape And Reel4.38--40850.171000NECEAR99MALAYSIA
STM809SWX6FSOT23Tape And Reel2.93--40850.171000NECEAR99PHILIPPINES
STM809RWX6FSOT23Tape And Reel2.63--40850.171000NECEAR99PHILIPPINES
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
STM809LWX6FSOT23IndustrialEcopack3md_wx-wspc-sot-wspc-23-wspc-3-wspc-lds_dzwx46vb8l3-wspc-(stm809lwx6f)_a_ver2_signed.pdf
md_wx-wspc-sot-wspc-23-wspc-3-wspc-lds_dzwx46vb8l3-wspc-(stm809lwx6f)_a_ver2.xml
STM809TWX6FSOT23IndustrialEcopack3md_wx-wspc-sot-wspc-23-wspc-3lds_dzwx-wspc-46vb8t3.pdf
md_wx-wspc-sot-wspc-23-wspc-3lds_dzwx-wspc-46vb8t3.xml
STM809MWX6FSOT23IndustrialEcopack3md_wx-wspc-sot-wspc-23-wspc-3-wspc-lds_dzwx46vb8m3-wspc-(stm809mwx6f)-wspc-ver2_signed.pdf
md_wx-wspc-sot-wspc-23-wspc-3-wspc-lds_dzwx46vb8m3-wspc-(stm809mwx6f)-wspc-ver2.xml
STM809SWX6FSOT23IndustrialEcopack3md_wx-wspc-sot-wspc-23-wspc-3-wspc-lds_dzwx-wspc-46vb8s3-wspc-(stm809swx6f).pdf
md_wx-wspc-sot-wspc-23-wspc-3-wspc-lds_dzwx-wspc-46vb8s3-wspc-(stm809swx6f).xml
STM809RWX6FSOT23IndustrialEcopack3md_wx-wspc-sot-wspc-23-wspc-3-wspc-lds_dzwx46vb8r3-wspc-(stm809rwx6f)_a_ver2_signed.pdf
md_wx-wspc-sot-wspc-23-wspc-3-wspc-lds_dzwx46vb8r3-wspc-(stm809rwx6f)_a_ver2.xml
Reset circuit STM812
circuit_diagram_9873_thumbnail.png STM812
How to connect ST reset circuits to a microprocessor STM812
How to control power-up/reset and monitor the voltage in microprocessor systems using ST reset circuits STM812
Reset and supervisor ICs: frequently asked questions (FAQ) STM805T-S-R
Reset and supervisor ICs: frequently asked questions (FAQ) STM805T-S-R
md_wx-wspc-sot-wspc-23-wspc-3-wspc-lds_dzwx46vb8l3-wspc-(stm809lwx6f)_a_ver2_signed.pdf STM809
md_wx-wspc-sot-wspc-23-wspc-3-wspc-lds_dzwx46vb8l3-wspc-(stm809lwx6f)_a_ver2.xml STM809
md_wx-wspc-sot-wspc-23-wspc-3lds_dzwx-wspc-46vb8t3.pdf STM809
md_wx-wspc-sot-wspc-23-wspc-3lds_dzwx-wspc-46vb8t3.xml STM809
md_wx-wspc-sot-wspc-23-wspc-3-wspc-lds_dzwx46vb8m3-wspc-(stm809mwx6f)-wspc-ver2_signed.pdf STM809
md_wx-wspc-sot-wspc-23-wspc-3-wspc-lds_dzwx46vb8m3-wspc-(stm809mwx6f)-wspc-ver2.xml STM809
md_wx-wspc-sot-wspc-23-wspc-3-wspc-lds_dzwx-wspc-46vb8s3-wspc-(stm809swx6f).pdf STM809
md_wx-wspc-sot-wspc-23-wspc-3-wspc-lds_dzwx-wspc-46vb8s3-wspc-(stm809swx6f).xml STM809
md_wx-wspc-sot-wspc-23-wspc-3-wspc-lds_dzwx46vb8r3-wspc-(stm809rwx6f)_a_ver2_signed.pdf STM809
md_wx-wspc-sot-wspc-23-wspc-3-wspc-lds_dzwx46vb8r3-wspc-(stm809rwx6f)_a_ver2.xml STM809