MAX811REUS+T

MAX811REUS+T is Maxim’s MAX811 family voltage supervisor with optional watchdog/reset features. It monitors the supply rail and provides a controlled reset signal to a microcontroller or digital logic to avoid bad operation during power-up, brownouts, or fault conditions. Key ideas:
- Generates a clean, active-low RESET# output when Vcc is too low or a watchdog timeout occurs.
- Includes optional inputs for manual reset (MR) and watchdog (WDI) to extend or force a reset as needed.
- Provides a defined power-on reset delay so the MCU starts only after Vcc stabilizes.
- Flexible operation across typical MCU voltages (variants cover roughly 2.7–5.5 V; exact thresholds depend on the specific part).
- REUS+T suffix indicates packaging/ordering options (RoHS-compliant), with +T often denoting Tape & Reel packaging.
Common uses: MCU/systems reset protection, safe startup in embedded systems, battery-powered devices, and any design needing guaranteed reset behavior on power or watchdog events.
If you need exact electrical specs (thresholds, delay times, pinout) for your exact variant, I can pull the datasheet details.

Here are the key features of MAX811REUS+T (Microprocessor supervisory with watchdog):
- POWER-ON RESET and undervoltage monitoring to ensure a safe MCU start
- Independent watchdog timer with external capacitor to set timeout
- WDI input to refresh/kick the watchdog; if not refreshed, reset is generated
- Manual reset input to force an immediate reset
- RESET output (active-low, RESET#) to drive the MCU/reset circuitry
- Wide supply range (approx. 2.7 V to 5.5 V) with low quiescent current
- Small RoHS-compliant package (REUS, tape-and-reel) for surface-mount designs
- Designed for standard industrial temperature range (typical -40°C to +85°C)
Note: The exact voltage-threshold options, timing ranges, and output characteristics depend on the specific MAX811 variant family; consult the datasheet for MAX811REUS+T for precise numbers.

MAX811REUS+T is in an 8-pin surface-mount package (SOIC/SOP-8) with Tape-and-Reel packaging.

Pin count: 8 pins (SOIC-8, D8).
Function: MAX811REUS+T is a microprocessor reset supervisor. It monitors Vcc and generates a reset signal to a microcontroller during power-up/power-down to ensure proper reset. It also provides an external manual/reset input to force a reset. No external components are required for typical use. The suffix indicates RoHS-compliant (REUS) packaging and tape-and-reel (T).

Manufacturer: Maxim Integrated Products (now a subsidiary of Analog Devices, Inc.).
What kind of company: A global semiconductor company that designs and manufactures analog, mixed-signal, and power-management integrated circuits.

Application areas of MAX811REUS+T:
- Microcontroller/microprocessor reset supervision (power-on reset with brown-out protection)
- Deterministic reset release for embedded systems, digital logic, FPGA/CPLD
- Battery-powered/portable devices needing a reliable, low-quiescent-reset solution
- Systems requiring clean reset during power cycles or supply dips (consumer electronics, industrial control, communications equipment)

Equivalent parts (voltage supervisors with reset/POR) to MAX811REUS+T include:
- TI TLV803/TLV803B
- Microchip MCP1314/MCP1315/MCP1316
- Onsemi NCP301/NCP302/NCP303
- Analog Devices ADM803/ADM804
These devices provide similar supervisor/reset functionality; pick by supply threshold and reset delay to match MAX811’s specs.