Features and Benefits

  • Industry-Standard 4-Wire Interface Simplifies I/O Ports Expansion Independent of Microprocessor Architecture
    • High-Speed, 26MHz, SPI-/QSPI™-/MICROWIRE®-Compatible Serial Interface
    • 2.25V to 3.6V Operation
  • Protection Circuitry Ensures Robust Operation
    • I/O Port Inputs Are Overvoltage Protected to 7V
    • I/O Port Outputs Are 7V-Rated Open Drain
    • I/O Ports Support Hot Insertion
  • Low Power Consumption and Small Package Reduce Board Size and Power-Supply Requirements
    • 0.7µA (typ), 1.9µA (max) Standby Current
    • 3mm x 3mm, 0.8mm High TQFN Package

Product Details

The MAX7317 serial-interfaced peripheral provides microprocessors with 10 I/O ports rated to 7V. Each port can be individually configured as either an opendrain output, or an overvoltage-protected Schmitt input.

The MAX7317 supports hot insertion. All port pins remain high impedance in power-down (V+ = 0V) with up to 8V asserted on them.

The MAX7317 is available in 16-pin thin QFN and QSOP packages and operates in the -40°C to +125°C range.

For a similar part with constant-current outputs and 8-bit PWM controls, refer to the MAX6966/MAX6967 data sheet.


  • Cellular Phones
  • Industrial Controllers
  • Portable Equipment
  • System Monitoring
  • White Goods

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.

Product Recommendations

MAX7317 Companion Parts

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

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(*)The 1Ku 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. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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