Ultralow Power, 3-Lead, SOT-23, Microprocessor Reset Circuit, Active-Low Open-Drain Output, 0.5 µA Supply Current

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Product Details

The ADM6326/ADM6328/ADM6346/ADM6348 are ultralow power microprocessor supervisory circuits suited to monitoring the power supplies in microprocessor and telecommunications applications. Ultralow supply currents make these parts ideal for use in low power, portable equipment.

These devices provide a reset output during power-up, powerdown, and brownout conditions. On power-up, an internal timer holds RESET asserted for at least 100 ms. This holds the microprocessor in a reset state until conditions have stabilized.

The ADM6326 and ADM6346 have an active low push-pull reset output. The ADM6328 and ADM6348 have an active low open drain reset output, which requires an external pull-up resistor. The reset output remains operational with VCC as low as 1 V. The reset comparator features built-in glitch immunity, making the devices immune to fast transients on VCC.

There are 24 reset threshold voltage options available, in increments between 2.2 V and 4.63 V, making these devices suitable for monitoring a variety of supply voltages (see the Ordering Guide section). These devices are available in a 3-lead SOT-23 package and operate over the extended temperature range of −40°C to +85°C.

  • Telecommunications
  • Microprocessor systems
  • Desktop and notebook computers
  • Portable 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.


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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.

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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