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MAX7313
16-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection

8- and 16-Port I/O Expanders with IRQ and Low Standby Current Ideal for Portable Applications


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Data Sheet
FULL DATA SHEET (PDF, 356kB)
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Description
The MAX7313 I²C-compatible serial interfaced peripheral provides microprocessors with 16 I/O ports. Each I/O port can be individually configured as either an open-drain current-sinking output rated at 50mA and 5.5V, or a logic input with transition detection. A 17th port can be used for transition detection interrupt, or as a general-purpose output. The outputs are capable of driving LEDs, or providing logic outputs with external resistive pullup up to 5.5V.

PWM current drive is integrated with 8 bits of control. Four bits are global control and apply to all LED outputs to provide coarse adjustment of current from fully off to fully on with 14 intensity steps. Each output then has individual 4-bit control, which further divides the globally set current into 16 more steps. Alternatively, the current control can be configured as a single 8-bit control that sets all outputs at once.

Each output has independent blink timing with two blink phases. All LEDs can be individually set to be on or off during either blink phase, or to ignore the blink control. The blink period is controlled by a register.

The MAX7313 supports hot insertion. All port pins, the active-low INT output, SDA, SCL, and the slave-address inputs AD0-2 remain high impedance in power-down (V+ =0V) with up to 6V asserted upon them.

The MAX7313 is controlled through the 2-wire I²C/SMBus serial interface, and can be configured to any one of 64 I²C addresses.

NOTE: This product requires use of the following:

  • MAX7313 EVKIT Software

    Key Features   Applications/Uses
    • 400kbs, 2-Wire Serial Interface, 5.5V Tolerant
    • 2V to 3.6V Operation
    • Overall 8-Bit PWM LED Intensity Control
      • Global 16-Step Intensity Control
      • Individual 16-Step Intensity Controls
    • Two-Phase LED Blinking
    • High Output Current (50mA max Per Port)
    • Outputs are 5.5V-Rated Open Drain
    • Supports Hot Insertion
    • Inputs are Overvoltage Protected to 5.5V
    • Transition Detection with Interrupt Output
    • 1.2µA (typ), 3.6µA (max) Standby Current
    • Small 4mm x 4mm Thin QFN Package
    • -40°C to +125°C Temperature Range
    • All Ports Can Be Configured as Inputs or Outputs

     
  • Keypad Backlights
  • LCD Backlights
  • LED Status Indication
  • Notebook Computers
  • Portable Equipment
  • RGB LED Drivers

    Key Specifications:   I/O Port Expanders
    Part Number Features Interface Inputs/Outputs Outputs Interrupt Output Over-Voltage Protection Drive Current (mA) Supply Voltage (min) (V) Supply Voltage (max) (V) RoHS Available Package Smallest Available Package (max w/pins) (mm2) Price**
    MAX7313 
    64 Slave IDs
    LED Blinking
    LED PWM control
    Transition detection
    Serial 2-Wire 400kbit 16 1 Yes 5.5V 50 2 3.6 Yes QSOP/24
    THIN QFN/24
    17 $1.52 @ 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.

    Application Notes
  • Application Note 2198: Driving LEDs with Open Drain Port Expander Outputs - MAX7313, MAX7313
  • Application Note 3814: Port Expanders for Flip-Cell Phones Save Cost and Space - MAX7313
  • Application Note 4253: PWM Intensity Control for the MAX6964 LED Driver - MAX7313

    Evaluation Kits
  • MAX7313EVKIT

    Design Guides
  • INTERFACE (PDF)

    Reliability Reports
  • Show FIT data for:
  • Request Reliability Report for:

    Software/Models
  • MAX7313 EVKIT Software

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-8 of 8

    MAX7313 Free
    Sample
    Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX7313AEG  
    QSOP;24 pin;54 mm²
    Dwg: 21-0055G (PDF)
    Use pkgcode/variation: E24-1*
    -40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7313AEG-T  
    QSOP;24 pin;54 mm²
    Dwg: 21-0055G (PDF)
    Use pkgcode/variation: E24-1*
    -40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7313AEG+  
    QSOP;24 pin;54 mm²
    Dwg: 21-0055G (PDF)
    Use pkgcode/variation: E24+1*
    -40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX7313AEG+T  
    QSOP;24 pin;54 mm²
    Dwg: 21-0055G (PDF)
    Use pkgcode/variation: E24+1*
    -40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX7313ATG  
    THIN QFN;24 pin;17 mm²
    Dwg: 21-0139H (PDF)
    Use pkgcode/variation: T2444-4*
    -40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7313ATG-T  
    THIN QFN;24 pin;17 mm²
    Dwg: 21-0139H (PDF)
    Use pkgcode/variation: T2444-4*
    -40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7313ATG+  
    THIN QFN;24 pin;17 mm²
    Dwg: 21-0139H (PDF)
    Use pkgcode/variation: T2444+4*
    -40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX7313ATG+T  
    THIN QFN;24 pin;17 mm²
    Dwg: 21-0139H (PDF)
    Use pkgcode/variation: T2444+4*
    -40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    More Information
  • New Product Press Release 2003-11-06 

    Related Products
    MAX6957 4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port LED Display Driver and I/O Expander
    MAX7301 4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port I/O Expander
    MAX7300 2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port I/O Expander
    MAX6956 2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port LED Display Driver and I/O Expander
    MAX7310 2-Wire-Interfaced 8-Bit I/O Port Expander with Reset
    MAX7311 2-Wire-Interfaced 16-Bit I/O Port Expander with Interrupt and Hot-Insertion Protection
    MAX6965 9-Output LED Driver with Intensity Control and Hot-Insertion Protection
    MAX7312 2-Wire-Interfaced 16-Bit I/O Port Expander with Interrupt and Hot-Insertion Protection
    MAX7315 8-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection
    MAX7316 10-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection
    MAX7314 18-Port GPIO with LED Intensity Control, Interrupt, and Hot-Insertion Protection
    MAX6964 17-Output LED Driver/GPO with Intensity Control and Hot-Insertion Protection
    MAX7317 10-Port SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection
    MAX7318 2-Wire-Interfaced, 16-Bit, I/O Port Expander with Interrupt and Hot-Insertion Protection

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    Document Ref.: 19-3059; Rev 4; 2005-04-26
    This page last modified: 2008-03-13




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