Features and Benefits

  • Simultaneously Monitors Three Supplies
    • LTC1326: 5V, 3.3V and ADJ
    • LTC1326-2.5: 2.5V, 3.3V and ADJ
  • Guaranteed Threshold Accuracy: ±0.75%
  • Low Supply Current: 20µA
  • Internal Reset Time Delay: 200ms
  • Manual Push-Button Reset Input
  • Active Low and Active High Reset Outputs
  • Active Low “Soft” Reset Output
  • Power Supply Glitch Immunity
  • Guaranteed RESET for VCC3 ≥ 1V or VCC5 ≥ 1V or VCC25 ≥ 1V
  • 8-Pin SO and MSOP Packages

Product Details

The LTC1326/LTC1326-2.5 are triple supply monitors intended for systems with multiple supply voltages. They provide micropower operation, small size and high accuracy supply monitoring.

Tight 0.75% threshold accuracy and glitch immunity ensure reliable reset operation without false triggering. The 20µA typical supply current makes the LTC1326/LTC1326-2.5 ideal for power-conscious systems.

The RST output is guaranteed to be in the correct state for VCC3, VCC5 or VCC25 down to 1V. The LTC1326/LTC1326-2.5 can be configured to monitor one, two or three inputs, depending on system requirements.

A manual push-button reset input provides the ability to generate a very narrow “soft” reset pulse (100µs typ) or a 200ms reset pulse equivalent to a power-on reset. Both SRST and RST outputs are open-drain and can be OR-tied with other reset sources.


  • Desktop Computers
  • Notebook Computers
  • Intelligent Instruments
  • Portable Battery-Powered Equipment

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

PCN-PDN Information

Sample & Buy

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