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Data Sheet Rev. 6
PDF
CN Rev. 4

Overview

Features and Benefits

  • 10MHz Serial Interface
  • Individual LED Segment Control
  • Decode/No-Decode Digit Selection
  • 150µA Low-Power Shutdown (Data Retained)
  • Digital and Analog Brightness Control
  • Display Blanked on Power-Up
  • Drive Common-Cathode LED Display
  • Slew-Rate Limited Segment Drivers for Lower EMI (MAX7221)
  • SPI, QSPI, MICROWIRE Serial Interface (MAX7221)
  • 24-Pin DIP and SO Packages

Product Details

The MAX7219/MAX7221 are compact, serial input/output common-cathode display drivers that interface microprocessors (µPs) to 7-segment numeric LED displays of up to 8 digits, bar-graph displays, or 64 individual LEDs. Included on-chip are a BCD code-B decoder, multiplex scan circuitry, segment and digit drivers, and an 8x8 static RAM that stores each digit. Only one external resistor is required to set the segment current for all LEDs. The MAX7221 is compatible with SPI™, QSPI™, and MICROWIRE™, and has slew-rate-limited segment drivers to reduce EMI.

A convenient 4-wire serial interface connects to all common µPs. Individual digits may be addressed and updated without rewriting the entire display. The MAX7219/MAX7221 also allow the user to select code-B decoding or no-decode for each digit.

The devices include a 150µA low-power shutdown mode, analog and digital brightness control, a scan-limit register that allows the user to display from 1 to 8 digits, and a test mode that forces all LEDs on.

For applications requiring 3V operation or segment blinking, refer to the MAX6951 data sheet.

Applications

  • Bar Graph Displays
  • Industrial Controllers
  • LED Matrix Displays
  • Panel Meters

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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.

Documentation & Resources

  • View All (15)
  • 3rd Party Solutions (6)
  • Data Sheets (1)
  • Reliability Data (1)
  • Application Notes (1)
  • Technical Articles (6)
    • Document Type
    Technical Articles

    Reference Designs (1)

    Product Recommendations

    MAX7219 Companion Parts

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    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.View our quality and reliability program and certifications for more information.

    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    MAX7219C/D Material Declaration Reliability Data 0-CHIP-N/A
    MAX7219CNG+ Material Declaration Reliability Data Plastic Dual-In-Line, Narrow (0.3in)
    MAX7219CWG+ Material Declaration Reliability Data Small-Outline IC, Wide (0.3in)
    MAX7219CWG+T Material Declaration Reliability Data Small-Outline IC, Wide (0.3in)
    MAX7219ENG+ Material Declaration Reliability Data Plastic Dual-In-Line, Narrow (0.3in)
    MAX7219EWG+ Material Declaration Reliability Data Small-Outline IC, Wide (0.3in)
    MAX7219EWG+T Material Declaration Reliability Data Small-Outline IC, Wide (0.3in)
    Wafer Fabrication Data MAX7219 Reliability Data

    Support & Discussions

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    MAX7219 Ask your question »
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