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MAX7300
2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port I/O Expander


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 1.2MB)
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Description
The MAX7300 compact, serial-interfaced, I/O expansion peripheral provides microprocessors with up to 28 ports. Each port is individually user configurable to either a logic input or logic output.

Each port can be configured as either a push-pull logic output capable of sinking 10mA and sourcing 4.5mA, or a Schmitt logic input with optional internal pullup. Seven ports feature configurable transition detection logic, which generates an interrupt upon change of port logic level. The MAX7300 is controlled through an I²C-compatible 2-wire serial interface, and uses four-level logic to allow 16 I²C addresses from only two select pins.

The MAX7300AAX and MAX7300ATL have 28 ports and are available in 36-pin SSOP and 40-pin thin QFN packages, respectively. The MAX7300AAI and MAX7300ATI have 20 ports and are available in 28-pin SSOP and thin QFN packages. For an SPI™-interfaced version, refer to the MAX7301 data sheet. For a pin-compatible port expander with additional 24mA constant-current LED drive capability, refer to the MAX6956 data sheet.

Key Features   Applications/Uses
  • 400kbps I²C-Compatible Serial Interface
  • 2.5V to 5.5V Operation
  • -40°C to +125°C Temperature Range
  • 20 or 28 I/O Ports, Each Configurable as
    • Push-Pull Logic Output
    • Schmitt Logic Input
    • Schmitt Logic Input with Internal Pullup
  • 11µA (max) Shutdown Current
  • Logic Transition Detection for Seven I/O Ports

 
  • Automotive
  • Industrial Controllers
  • System Monitoring
  • White Goods

    Key Specifications:  I/O Port Expanders
    Part Number Features Interface I/O Interr.Out Drive Current
    (mA)
    VSUPPLY
    (V)
    VSUPPLY
    (V)
    Price
    min max See Notes
    MAX7300 
    Direct LED Drive with Blinking
    Transition Detection
    Serial 2-Wire 400kbit 20 or 28 Yes 10 2.5 5.5 $2.55 @1k
    See All I/O Port Expanders (26)

    Diagram
    MAX7300: Typical Operating Circuit
    Typical Operating Circuit

    Application Notes
  • Application Note 2199: Driving LEDs with Push-Pull Port Expander Outputs - MAX7300
  • Application Note 2852: Using a PC to Experiment with the MAX7300/MAX7301 Port Expanders - MAX7300
  • Application Note 3658: Serializing an HD44780 LCD Display - MAX7300
  • Application Note 4021: MAX6956 Programming Guide - MAX7300

    Design Guides
  • Interface (PDF)
  • System Timing & Control (PDF)

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

    Software/Models
    none

    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: 1-16 of 16

    MAX7300 Free
    Sample
    Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX7300ANI+    
    Active PDIP(N);28 pin;290 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: N28+2*
    -40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX7300ANI    
    Active PDIP(N);28 pin;290 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: N28-2*
    -40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7300AGL  
    Active QFN;40 pin;37 mm²
    Outline Drawing: 21-0105 (PDF)
    Land Pattern: 90-0281 (PDF)
    Use pkgcode/variation: G4066-1*
    -40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7300AGL-T    
    Active QFN;40 pin;37 mm²
    Outline Drawing: 21-0105 (PDF)
    Land Pattern: 90-0281 (PDF)
    Use pkgcode/variation: G4066-1*
    -40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7300AAI  
    Active SSOP;28 pin;82 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0095 (PDF)
    Use pkgcode/variation: A28-1*
    -40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7300AAI-T    
    Active

    Land Pattern: Not Available

    -40°C to +125°C See data sheet
    MAX7300AAI+  
    Active SSOP;28 pin;82 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0095 (PDF)
    Use pkgcode/variation: A28+1*
    -40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX7300AAI+T    
    Active SSOP;28 pin;82 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0095 (PDF)
    Use pkgcode/variation: A28+1*
    -40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX7300AAX    
    Active SSOP;36 pin;163 mm²
    Outline Drawing: 21-0040 (PDF)
    Land Pattern: 90-0098 (PDF)
    Use pkgcode/variation: A36-4*
    -40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7300AAX-T    
    Active

    Land Pattern: Not Available

    -40°C to +125°C See data sheet
    MAX7300AAX+  
    Active SSOP;36 pin;163 mm²
    Outline Drawing: 21-0040 (PDF)
    Land Pattern: 90-0098 (PDF)
    Use pkgcode/variation: A36+4*
    -40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX7300AAX+T    
    Active

    Land Pattern: Not Available

    -40°C to +125°C See data sheet
    MAX7300ATI  
    Active TQFN;28 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0026 (PDF)
    Use pkgcode/variation: T2855-6*
    -40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX7300ATI-T    
    Active

    Land Pattern: Not Available

    -40°C to +125°C See data sheet
    MAX7300ATL+  
    Active TQFN;40 pin;37 mm²
    Outline Drawing: 21-0141 (PDF)
    Land Pattern: 90-0055 (PDF)
    Use pkgcode/variation: T4066+5*
    -40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX7300ATL+T    
    Active TQFN;40 pin;37 mm²
    Outline Drawing: 21-0141 (PDF)
    Land Pattern: 90-0055 (PDF)
    Use pkgcode/variation: T4066+5*
    -40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    More Information
  • New Product Press Release 2002-08-14 

    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
    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
    MAX7313 16-Port I/O Expander with LED Intensity Control, 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
    MAX1608, MAX1609 Octal, SMBus-to-Parallel I/O Expanders

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    Document Ref.: 19-2413; Rev 6; 2006-08-09
    This page last modified: 2008-03-13


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