Description

The MAX6326UR26+T is a microprocessor (µP) supervisory circuit used to monitor the power supplies in µP and digital systems. It is designed for use with 2.5V, 3V, 3.3V, and 5V powered circuits. This circuit performs a single function of asserting a reset signal when the VCC supply voltage drops below a preset threshold. It keeps the reset signal asserted for at least 100ms after VCC rises above the reset threshold. The MAX6326UR26+T offers different output options, including push-pull and open-drain. These devices are guaranteed to be in the correct state for VCC down to 1V and have factory-trimmable reset thresholds between 2.2V and 4.63V.

Specifications and features

• Ultra-Low 1µA (max) Supply Current
• Precision Monitoring of 2.5V, 3V, 3.3V, and 5V Power-Supply Voltages
• Reset Thresholds Available from 2.2V to 4.63V
• Fully Specified Over Temperature
• 100ms (min) Power-On Reset Pulse Width
• Low Cost
• Available in Three Versions: Push-Pull RESET, Push-Pull RESET, and Open-Drain RESET
• Power-Supply Transient Immunity
• No External Components
• 3-Pin SC70/SOT23 Packages
• Pin Compatible with MAX803/MAX809/MAX810

Application Scenarios

The MAX6326UR26+T is commonly used in the following applications:

• Computers
• Intelligent Instruments
• Controllers
• Automotive
• Critical µP and µC Power Monitoring
• Portable/Battery-Powered Equipment

Comparison

Advantages:

• Low supply current makes it ideal for portable equipment.
• No external components required, leading to cost savings.
• Various versions available with different output options.
• Power-supply transient immunity.

Disadvantages:

• Factory-trimmable reset thresholds may require additional calibration.
• Availability of nonstandard versions may vary.