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ADM6346:  Ultralow Power, 3-Lead, SOT-23, Microprocessor Reset Circuit, Active-Low Push-Pull Output, 1 µA Supply Current

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.


Applications
  • Telecommunications
  • Microprocessor systems
  • Desktop and notebook computers
  • Portable equipment
  • FEATURES and BENEFITS

    • Ultralow supply current of 1 μA maximum (ADM6326/ADM6328)
    • Accurate monitoring of 2.5 V, 3 V, 3.3 V, and 5 V rails
    • Reset thresholds of 2.2 V to 4.63 V
    • Glitch immunity from negative-going VCC transients
    • Power-on reset pulse width of 100 ms minimum
    • 2 reset output options
      Push-pull RESET (ADM6326/ADM6346)
      Open-drain RESET (ADM6328/ADM6348)
    • Power-on reset pulse width of 100 ms minimum
    • Operating temperature range of −40°C to +85°C
    • 3-lead SOT-23 package

    Documentation

    Title Content Type File Type
    ADM6326/ADM6328/ADM6346/ADM6348: Ultralow Power, 3-Lead, SOT-23 Microprocessor Reset Circuits Data Sheet (Rev A, 06/2014) (pdf, 282 kB) Data Sheets PDF
    Supervisory Devices Complementary Parts Guide for Altera FPGAs  (pdf, 664 kB) Product Selection Guide PDF
    Supervisory Devices Complementary Parts Guide for Xilinx FPGAs  (pdf, 661 kB) Product Selection Guide PDF
    New SOT Supervisors [PPT, Dec 2010]  (ppt, 551 kB)
    Supervisors for ultra low power (ADM6326/28/46/48), Dual Channel (ADM6305/6), Triple Channel (ADM6710Q), Quad Channel (ADM6710x), Quad Channel with negative rail monitoring (ADM6339).
    Solutions Bulletins PPT
    Voltage Monitoring and Sequencing (2009/2010)  (pdf) Overview PDF
    RAQs index Rarely Asked Questions HTML
    Glossary of EE Terms Glossary HTML

    Design Tools,Models,Drivers & Software

    Title Content Type File Type
    Supervisor Parametric Search
    Narrow down the thousands of available supervisors using parameters applicable to your application.
    ADIsim Design/Simulation Tools HTML

    Evaluation Kits & Symbols & Footprints

    Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

    SampleSample & Buy

    Price, packaging, availability

    ADM6346 Model Options
    Model Package Pins Temp.
    Range
    Packing,
    Qty
    Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    ADM6346-33ARTZ-R7 Status: Production 3 ld SOT-23 3 Ind Reel, 3000 - $0.95 Y  Material Info PCN Purchase Sample
    ADM6346-34ARTZ-R7 Status: Production 3 ld SOT-23 3 Ind Reel, 3000 - $0.95 Y  Material Info PCN Purchase Sample
    ADM6346-35ARTZ-R7 Status: Production 3 ld SOT-23 3 Ind Reel, 3000 - $0.95 Y  Material Info PCN Purchase Sample
    ADM6346-36ARTZ-R7 Status: Production 3 ld SOT-23 3 Ind Reel, 3000 - $0.95 Y  Material Info PCN Purchase Sample
    ADM6346-37ARTZ-R7 Status: Production 3 ld SOT-23 3 Ind Reel, 3000 - $0.95 Y  Material Info PCN Purchase Sample
    ADM6346-38ARTZ-R7 Status: Production 3 ld SOT-23 3 Ind Reel, 3000 - $0.95 Y  Material Info PCN Purchase Sample
    ADM6346-39ARTZ-R7 Status: Production 3 ld SOT-23 3 Ind Reel, 3000 - $0.95 Y  Material Info PCN Purchase Sample
    ADM6346-40ARTZ-R7 Status: Production 3 ld SOT-23 3 Ind Reel, 3000 - $0.95 Y  Material Info PCN Purchase Sample
    ADM6346-41ARTZ-R7 Status: Production 3 ld SOT-23 3 Ind Reel, 3000 - $0.95 Y  Material Info PCN Purchase Sample
    ADM6346-43ARTZ-R7 Status: Production 3 ld SOT-23 3 Ind Reel, 3000 - $0.95 Y  Material Info PCN Purchase Sample
    ADM6346-44ARTZ-R7 Status: Production 3 ld SOT-23 3 Ind Reel, 3000 - $0.95 Y  Material Info PCN Purchase Sample
    ADM6346-45ARTZ-R7 Status: Production 3 ld SOT-23 3 Ind Reel, 3000 - $0.95 Y  Material Info PCN Purchase Sample
    ADM6346-46ARTZ-R7 Status: Production 3 ld SOT-23 3 Ind Reel, 3000 - $0.95 Y  Material Info PCN Purchase Sample
    Price Table Help

    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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