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
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STMicroelectronics - STM812
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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 |
(**) 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 | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| STM812SW16F | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| STM812LW16F | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| STM812RW16F | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| STM812MW16F | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
STM812TW16F Active
STM812SW16F Active
STM812LW16F Active
STM812RW16F Active
STM812MW16F Active
(*) 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