ADI MAX809S

Part points

• The MAX809S is a microprocessor (µP) supervisory circuit that provides reset signals to the µP during power-up, power-down, and brownout conditions. It monitors the supply voltage and asserts its reset output when the voltage falls below a preset threshold. The chip also incorporates a manual reset input, which allows forcing the reset output to be active even when the supply voltage is within the normal operating range.

• Equivalent

  The equivalent products of the MAX809S chip are MAX809T, MAX809U, MAX809V, MAX809W, MAX809X, MAX809Y, and MAX809Z.

• Features

  The MAX809S is a microprocessor supervisory circuit designed to monitor the supply voltage of microprocessor-based systems. It provides reset signals during power-up, power-down, and power brownout conditions. The voltage threshold is fixed at 4.63V, and it has an open-drain active-high RESET output, a reset timeout period, and low supply current.

• Pinout

  The MAX809S is a microprocessor reset circuit. It has 4 pins, including an active-low reset output (RST), a power supply input (VCC), a ground (GND), and a reset output capacitor (CT). It is used to reset microprocessors, microcontrollers, and other digital logic systems during power-up, brownout, and other fault conditions.

• Manufacturer

  MAX809S is manufactured by Maxim Integrated, an American semiconductor company. Maxim Integrated primarily designs, develops, manufactures, and markets a wide range of analog and mixed-signal integrated circuits. The company specializes in producing high-performance integrated circuits for various applications, including automotive, communications, consumer electronics, industrial, and healthcare sectors.

• Application Field

  The MAX809S is a voltage monitor circuit that specifically targets low-cost microprocessor system applications, such as computers, networking systems, and industrial control systems, to provide reset and watchdog functions. It is commonly used for monitoring power supply voltages and generating a reset signal when the voltage drops below a preset threshold.

• Package

  The MAX809S chip is available in an SOT-23-3 package type, which is compact and surface-mounted. It has three pins and measures approximately 2.9mm x 1.3mm x 1.1mm in size.