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The MAX6840XSD0+T is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated. Below are the factual specifications, descriptions, and features from the Manufactor Datasheet:

Specifications:

• Manufacturer: Maxim Integrated
• Type: Microprocessor (μP) Supervisor
• Package: 4-WLP (1.0mm x 1.0mm)
• Operating Voltage Range: 1.6V to 5.5V
• Reset Threshold Accuracy: ±1.5%
• Reset Timeout Period: 140ms (min)
• Operating Temperature Range: -40°C to +85°C
• Output Type: Active-Low, Push-Pull
• Quiescent Current: 3.5μA (typical)

Descriptions:

• The MAX6840XSD0+T is a low-power, single-voltage microprocessor supervisor designed to monitor system voltages and provide a reset signal when the voltage falls below a preset threshold.
• It ensures proper system operation by holding the microprocessor in reset until the supply voltage stabilizes.
• The device features a manual reset input for external control.

Features:

• Low Power Consumption: 3.5μA typical supply current
• Wide Operating Voltage Range: 1.6V to 5.5V
• Precision Voltage Monitoring: ±1.5% threshold accuracy
• Manual Reset Input: Allows external reset triggering
• Small Form Factor: 4-WLP package (1.0mm x 1.0mm)
• No External Components Required: Simplifies design
• Guaranteed Reset Output Valid Down to VCC = 1V

This information is based solely on the manufacturer's datasheet and technical documentation.