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MAX7317
10-Port SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection


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Description
FULL DATA SHEET (PDF, 296kB)
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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.

Key Features   Applications/Uses
  • High-Speed, 26MHz SPI™-/QSPI-™/MICROWIRE™- Compatible Serial Interface
  • 2.25V to 3.6V 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
  • 0.7µA (typ), 1.9µA (max) Standby Current
  • Tiny 3mm x 3mm, 0.8mm High Thin QFN Package
  • -40°C to +125°C Temperature Range

     
  • Automotive
  • Cell Phones
  • Industrial Controllers
  • Portable Equipment
  • System Monitoring
  • White Goods

    Key Specifications:   I/O Port Expanders
    Part Number Interface Inputs/Outputs Over-Voltage Protection Drive Current (mA) Supply Voltage (min) (V) Supply Voltage (max) (V) Package Smallest Available Package (max w/pins) (mm2) RoHS Available Price*
    MAX7317  Serial SPI 26Mbit 10 7V 10 2.25 3.6 QSOP/16
    THIN QFN/16
    31 Yes $1.09 @ 1k
    See All I/O Port Expanders (26)
    Notes:
    *This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

    Diagram
    MAX7317: Typical Application Circuit
    Typical Application Circuit

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    Document Ref.: 19-3380; Rev 2; 2005-04-26
    This page last modified: 2005-07-06




             



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