MAX811TEUS

The MAX811TEUS is a microprocessor supervisory circuit from Maxim Integrated (MAX811 family). It monitors the system supply voltage and provides a safe reset for a microcontroller or digital logic, helping prevent brown-out failures and software hangs.
Key points:
- Power-on reset: holds the MCU in reset until Vcc is stable.
- Reset output: generates a reliable reset signal to the MCU.
- Optional watchdog: a WDI input lets software toggle a watchdog to detect hangs.
- Manual reset: an active-low input to force a reset.
- Low power, fast response, suitable for various supply voltages.
- Package/variant suffix (TEUS) indicates the exact package, RoHS status, and temperature range.
Typical uses:
- Embedded microcontroller supervision in consumer, automotive, and industrial electronics.
- Systems needing reliable startup reset and fault detection.
How to use (high level):
- Connect Vcc and GND to the device.
- Tie the reset output to the MCU reset/power-on line.
- If using a watchdog, feed WDI with a periodic signal from software.
- Use MR (manual reset) as needed.
For exact electrical specs, timing, and pinout, consult the MAX811TEUS datasheet.

Equivalent parts to MAX811TEUS (voltage supervisor with manual reset) include:
- TI: TPS3800/TPS383x/TPS3890 voltage supervisors (various thresholds)
- Analog Devices: ADM803/ADM803A reset supervisors
- Microchip: MCP1316/MCP1317 reset supervisors
- On Semiconductor: NCP301/NCP302 reset supervisors
- Maxim: MAX809/MAX810 (same family)
Note: not all are pin-compatible; verify Vcc range, reset threshold, and output polarity.

Here are typical features of the MAX811TEUS (microprocessor supervisory circuit):
- Monitors supply (Vcc) and generates a power-on reset (POR)
- Manual reset input for external reset
- Reset output (active-low) that goes valid during undervoltage or manual reset
- Wide operating supply range (roughly 2.7V to 5.5V)
- Very low quiescent current (high efficiency in sleep/idle modes)
- Temperature range suitable for industrial use (-40°C to +85°C)
- 8-pin US package (TEUS indicates Tape-and-Reel/US package, RoHS-compliant)
Note: Exact thresholds and timing can vary by variant within the MAX811 family.

Pin count: 8 pins (SOIC-8).
Function: MAX811TEUS is a microprocessor supervisor/reset IC with an integrated watchdog timer. It monitors Vcc and asserts an active-low reset to the microcontroller if the supply falls outside spec or if the watchdog is not serviced. It provides a reset output (RESET#), a watchdog input (WDI) to refresh the timer, and a manual/reset input as applicable.

Manufacturer: Maxim Integrated Products. It’s a global semiconductor company that designs and sells analog and mixed-signal integrated circuits (fabless; now a subsidiary of Analog Devices).

MAX811TEUS is a microprocessor supervisory circuit with power-on reset (and watchdog) features. Typical applications include:
- Reset generation for microcontrollers, DSPs, FPGAs, and other digital ICs during power-up/down
- Watchdog monitoring to reset the processor if software hangs or fails to service the watchdog
- Brown-out/power-supply monitoring for reliable resets in battery-powered and mains-powered equipment
- Embedded systems, data acquisition, instrumentation, industrial controls, automotive electronics, telecom/network gear, and consumer electronics
Any system that requires a reliable, automatic reset without software intervention.

It comes in an 8-pin surface-mount SOIC package (SOIC-8).