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
| Description | Version | Size |
|---|---|---|
| DS3546: Reset circuit | 5.1 | 413 KB |
Application Notes
Technical Notes & Articles
| Description | Version | Size |
|---|---|---|
| TN0941: Reset and supervisor ICs: frequently asked questions (FAQ) | 1.0 | 328 KB |
Flyers
| Description | Version | Size |
|---|---|---|
| Resets and supervisors - portfolio overview | 1.0 | 1 MB |
Sample & Buy
| Part Number | Package | Packing Type | Voltage Reset 1 (V) (typ) | Voltage Reset 2 (V) (typ) | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | Unit Price (US$) * | Quantity | ECCN (EU) | ECCN (US) | Country of Origin |
|---|---|---|---|---|---|---|---|---|---|---|---|
| STM809LWX6F | SOT23 | Tape And Reel | 2.63 | - | -40 | 85 | 0.17 | 1000 | NEC | EAR99 | MALAYSIA |
| STM809TWX6F | SOT23 | Tape And Reel | 3.08 | - | -40 | 85 | 0.17 | 1000 | NEC | EAR99 | PHILIPPINES |
| STM809MWX6F | SOT23 | Tape And Reel | 4.38 | - | -40 | 85 | 0.17 | 1000 | NEC | EAR99 | MALAYSIA |
| STM809SWX6F | SOT23 | Tape And Reel | 2.93 | - | -40 | 85 | 0.17 | 1000 | NEC | EAR99 | PHILIPPINES |
| STM809RWX6F | SOT23 | Tape And Reel | 2.63 | - | -40 | 85 | 0.17 | 1000 | NEC | EAR99 | PHILIPPINES |
Quality & Reliability
- 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
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