Overview
The STM811TW16F is a low-power supervisory device from STMicroelectronics, designed to monitor power supplies and assert a reset signal when the supply voltage drops below a preset threshold. It is part of the STM809/810/811/812 family of microprocessor reset circuits. These devices are crucial for ensuring the proper operation of microprocessors by maintaining a stable power supply environment.
Key Specifications
| Parameter | Value |
|---|---|
| Part Number | STM811TW16F |
| Package | SOT-143 4-pin |
| Operating Temperature | -40°C to 85°C (Industrial grade) |
| Supply Voltage Monitoring | 3 V, 3.3 V, 5 V |
| Reset Pulse Width | 140 ms (minimum) |
| Reset Active Time | 280 ms (maximum) |
| Output Driver | Active Low/Push-Pull |
| Reset Threshold Voltage | 3.11 V (maximum) |
| Supply Current | 6 µA (typical) |
| RoHS Compliance | Ecopack3 |
Key Features
- Lead-free and available in small SOT23 and SOT143 packages.
- Precision monitoring of 3 V, 3.3 V, and 5 V supply voltages.
- Guaranteed RST/RST assertion down to VCC = 1.0 V.
- Low supply current of 6 µA (typical).
- Push-button reset input (MR) available on some models.
- Two output configurations: Push-pull RST output.
Applications
The STM811TW16F is suitable for various applications, including:
- Communications equipment.
- Computers and peripherals.
- Industrial control systems.
Q & A
- What is the primary function of the STM811TW16F?
The primary function is to monitor the power supply and assert a reset signal when the voltage drops below a preset threshold. - What are the supported supply voltages for the STM811TW16F?
The device supports 3 V, 3.3 V, and 5 V supply voltages. - What is the minimum reset pulse width of the STM811TW16F?
The minimum reset pulse width is 140 ms. - What is the maximum reset active time for the STM811TW16F?
The maximum reset active time is 280 ms. - What type of output driver does the STM811TW16F have?
The output driver is Active Low/Push-Pull. - What is the typical supply current of the STM811TW16F?
The typical supply current is 6 µA. - Is the STM811TW16F RoHS compliant?
Yes, it is RoHS compliant with an Ecopack3 rating. - What is the operating temperature range for the STM811TW16F?
The operating temperature range is -40°C to 85°C (Industrial grade). - What package type is the STM811TW16F available in?
The device is available in a SOT-143 4-pin package. - Does the STM811TW16F have a push-button reset input?
Yes, some models in the STM811 family have a push-button reset input (MR).
