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Maxim > Products > [LED Lighting and LCD Display ICs] 
MAX6950, MAX6951
Serially Interfaced, +2.7V to +5.5V, 5- and 8-Digit LED Display Drivers


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 244kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX6950/MAX6951 are compact common-cathode display drivers that interface microprocessors to individual 7-segment numeric LED digits, bar graph, or discrete LEDs through an SPI™-, QSPI™-, MICROWIRE™-compatible serial interface. The supply voltage can be as low as 2.7V.

The MAX6950 drives up to five 7-segment digits or 40 discrete LEDs. The MAX6951 drives up to eight 7-segment digits or 64 discrete LEDs.

Included on-chip are hexadecimal character decoders (0-9, A-F), multiplex scan circuitry, segment and digit drivers, and a static RAM that stores each digit. The user may select hexadecimal decoding or no-decode for each digit to allow any mix of 7-segment digits, bar graph, or discrete LEDs to be driven. The segment current for the LEDs is set by an internal digital brightness control. The segment drivers are slew-rate limited to reduce EMI.

Individual digits may be addressed and updated without rewriting the entire display. The devices include a low-power shutdown mode, digital brightness control, a scan-limit register that allows the user to display from one to eight digits, segment blinking that can be synchronized across drivers, and a test mode that forces all LEDs on.

An evaluation kit is available:  MAX6951EVKIT  

Key Features   Applications/Uses
  • High-speed 26MHz SPI-, QSPI-, MICROWIRE-Compatible Serial Interface
  • +2.7V to +5.5V Operation
  • Individual LED Segment Control
  • Segment Blinking Control that Can Be Synchronized Across Multiple Drivers
  • Hexadecimal Decode/No-Decode Digit Selection
  • Digital Brightness Control
  • Display Blanked on Power-Up
  • Drives Common-Cathode LED Digits
  • Multiplex Clock Syncronizable to External Clock
  • Slew-Rate Limited Segment Drivers for Low EMI
  • 75µA Low-Power Shutdown (Data Retained)
  • Small 16-Pin QSOP Package
  • Underwriters Laboratories (UL®) Recognized

  
  		• Bar Graphs and Matrix Displays
  		• Industrial Controllers and Instrumentation
  		• Medical Equipment
  		• Panel Meters
  		• Professional Audio Equipment
  		• Set-Top Boxes
  		• White Goods

    Diagram
    MAX6950, MAX6951: Typical Application Circuit
    Typical Application Circuit

    Application Notes
  		• Application Note 828: LED Manufacturers' Web Sites - MAX6950, MAX6951
  		• Application Note 874: Using the MAX6950 and the MAX6951 LED Display Drivers with Multiplex Dual-Digit Displays - MAX6950, MAX6951
  		• Application Note 875: Experimenting with the MAX6950 and the MAX6951 SPI LED Display Drivers from a PC - MAX6950, MAX6951
  		• Application Note 876: Migrating from the MAX7219 and MAX7221 to the MAX6950 and MAX6951 LED Drivers - MAX6950, MAX6951
  		• Application Note 1193: Electronic Displays Comparison - MAX6950, MAX6951
  		• Application Note 1879: Using Maxim SPI-compatible Display Drivers with other SPI Peripherals - MAX6950, MAX6951
  		• Application Note 1880: Charlieplexing - Reduced Pin-Count LED Display Multiplexing - MAX6950, MAX6951
  		• Application Note 1883: LEDs Are Still Popular (and Improving) after All These Years - MAX6950, MAX6951
  		• Application Note 3729: Using the MAX6951/MAX6950 LED Display Drivers with SPI Interface to Communicate with the MAXQ2000 Microcontroller - MAX6950, MAX6951

    Evaluation Kits
  		• MAX6951EVKIT

    Design Guides
  		• System Timing & Control (PDF)

    Reliability Reports
  		• Show FIT data for:
  		• Request Reliability Report for:
  		• Underwriters Laboratories (UL®) Recognized

    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

    MAX6950 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX6950CEE  
    		Active QSOP-EP;16 pin;31 mm²
    Outline Drawing: 21-0112 (PDF)
    Land Pattern: 90-0239 (PDF)
    Use pkgcode/variation: E16E-10*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6950CEE-T    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX6950CEE+  
    		Active QSOP-EP;16 pin;31 mm²
    Outline Drawing: 21-0112 (PDF)
    Land Pattern: 90-0239 (PDF)
    Use pkgcode/variation: E16E+10*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6950CEE+T    
    		Active QSOP-EP;16 pin;31 mm²
    Outline Drawing: 21-0112 (PDF)
    Land Pattern: 90-0239 (PDF)
    Use pkgcode/variation: E16E+10*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6950EEE  
    		Active QSOP-EP;16 pin;31 mm²
    Outline Drawing: 21-0112 (PDF)
    Land Pattern: 90-0239 (PDF)
    Use pkgcode/variation: E16E-10*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6950EEE-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX6950EEE+  
    		Active QSOP-EP;16 pin;31 mm²
    Outline Drawing: 21-0112 (PDF)
    Land Pattern: 90-0239 (PDF)
    Use pkgcode/variation: E16E+10*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6950EEE+T    
    		Active QSOP-EP;16 pin;31 mm²
    Outline Drawing: 21-0112 (PDF)
    Land Pattern: 90-0239 (PDF)
    Use pkgcode/variation: E16E+10*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6951 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX6951CEE  
    		Active QSOP-EP;16 pin;31 mm²
    Outline Drawing: 21-0112 (PDF)
    Land Pattern: 90-0239 (PDF)
    Use pkgcode/variation: E16E-10*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6951CEE-T    
    		Active QSOP-EP;16 pin;31 mm²
    Outline Drawing: 21-0112 (PDF)
    Land Pattern: 90-0239 (PDF)
    Use pkgcode/variation: E16E-10*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6951CEE+  
    		Active QSOP-EP;16 pin;31 mm²
    Outline Drawing: 21-0112 (PDF)
    Land Pattern: 90-0239 (PDF)
    Use pkgcode/variation: E16E+10*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6951CEE+T    
    		Active QSOP-EP;16 pin;31 mm²
    Outline Drawing: 21-0112 (PDF)
    Land Pattern: 90-0239 (PDF)
    Use pkgcode/variation: E16E+10*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6951EEE  
    		Active QSOP-EP;16 pin;31 mm²
    Outline Drawing: 21-0112 (PDF)
    Land Pattern: 90-0239 (PDF)
    Use pkgcode/variation: E16E-10*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6951EEE-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX6951EEE+  
    		Active QSOP-EP;16 pin;31 mm²
    Outline Drawing: 21-0112 (PDF)
    Land Pattern: 90-0239 (PDF)
    Use pkgcode/variation: E16E+10*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6951EEE+T    
    		Active QSOP-EP;16 pin;31 mm²
    Outline Drawing: 21-0112 (PDF)
    Land Pattern: 90-0239 (PDF)
    Use pkgcode/variation: E16E+10*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    More Information
  		• New Product Press Release 2001-12-04 
  		• Product Ad: Download

    Related Products
    MAX6953 2-Wire Interfaced, 2.7V to 5.5V, 4-Digit 5 x 7 Matrix LED Display Driver
    MAX6957 4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port LED Display Driver and I/O Expander
    MAX6952 4-Wire Interfaced, 2.7V to 5.5V, 4-Digit 5 x 7 Matrix LED Display Driver
    MAX6954 4-Wire Interfaced, 2.7V to 5.5V LED Display Driver with I/O Expander and Key Scan
    MAX6956 2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port LED Display Driver and I/O Expander
    MAX7219, MAX7221 Serially Interfaced, 8-Digit, LED Display Drivers
    MAX6958, MAX6959 2-Wire Interfaced, 3V to 5.5V, 4-Digit, 9-Segment LED Display Drivers with Keyscan

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     Description 
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    Document Ref.: 19-2227; Rev 2; 2005-04-18
    This page last modified: 2007-07-03


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