Maxim Integrated MAX821REUS+T Voltage Supervisory IC

The MAX821REUS+T from Maxim Integrated is a high-performance voltage supervisory integrated circuit (IC) designed to monitor power supplies in microprocessor systems. It provides a precise, low-power solution for system power-on reset monitoring and can be used in a wide array of applications ranging from computers and controllers to portable and automotive electronics.

This supervisory IC features a factory-trimmed reset threshold voltage that ensures accurate monitoring of the power supply voltage. It is capable of asserting a reset signal whenever the VCC supply voltage falls below the preset threshold. The reset output remains asserted for a period after VCC has risen above the reset threshold, providing a stable reset deassertion for the microprocessor. This timing ensures that the system has sufficient time to stabilize before the processor begins operation, which is critical for reliable system startup.

The MAX821REUS+T operates over a wide voltage range and has a low supply current, making it an energy-efficient choice for battery-operated devices. The device comes in a small, surface-mount package, which allows for a compact footprint on printed circuit boards, saving valuable space in space-constrained applications.

Key features of the MAX821REUS+T include:

• Factory-trimmed reset threshold voltage for precise monitoring
• Low supply current for energy efficiency
• Wide operating voltage range suitable for various applications
• Compact surface-mount package for space-saving design
• Manual reset input for additional system control
• Guaranteed reset valid to VCC = 1V for low-voltage operation
• Immune to short VCC transients for reliable performance

Overall, the Maxim Integrated MAX821REUS+T is an excellent choice for designers who need a reliable and precise voltage supervisory solution. Its combination of accuracy, low power consumption, and small form factor makes it a versatile component for ensuring the integrity of system power-up sequences across a broad range of electronic products.