MAX7219, MAX7221

Serially Interfaced, 8-Digit, LED Display Drivers
 Overview   Technical Documents   Ordering Info   Related Products   User Comments (1)   All   


Status Explanations for product status codes

Active: In Production.

Description

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.
 

Data Sheet

Download this datasheet in PDF formatDownload Rev 4 (PDF, 456kB)
Send this datasheet to any email addressE-Mail

Key Features

  • 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
 

Applications/Uses

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

Key Specifications:

Display Drivers
Part Number LCD or LED Digits or Char. Output Format Display Type Interface Fonts VSUPPLY
(V)		 VSUPPLY
(V)		 Budgetary Price
min max See Notes
MAX7219  LED 8-Digit 7 segment + DP Common Cathode Serial 3-Wire 10Mbit Code B 4 5.5 $4.11 @1k
MAX7221  Serial SPI 10Mbit $4.11 @1k
See All Display Drivers (52)
Pricing 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

MAX7219, MAX7221: Typical Application Circuit
Typical Application Circuit

Application Notes

Application Note 141   Data Multiplexer Adds Cursor To MAX7219 or MAX7221 LED 7 Segment Display Driver
Application Note 876   Migrating from the MAX7219 and MAX7221 to the MAX6950 and MAX6951 LED Drivers
Application Note 917   12-Bit Thermometer Using an 8-Bit µC and Assembler
Application Note 1004   Multiplexing Shutdown Allows Text to be Displayed
Application Note 1193   Electronic Displays Comparison
Application Note 1196   Using the MAX7219/7221 to Drive Higher Voltage or Current
Application Note 1879   Using Maxim SPI-compatible Display Drivers with other SPI Peripherals
Tutorial 1883   LEDs Are Still Popular (and Improving) after All These Years
Application Note 2782   Using a PC to Experiment with the MAX7219 and MAX7221 LED Display Drivers
Application Note 4505   One-Wire Network Controls Remote SPI Peripherals

Product Guides

Real-Time Clocks (PDF)

Reliability Reports

Reliability Report: MAX7219.pdf MAX7221.pdf
Show FIT data for:

Software/Models

none

Ordering Information

Filters: Part Number: Package: Temperature: Tape and Reel Sample
Part Number Free
Sample		 Buy Status Explanations for product status codes Package:
TYPE PINS FOOTPRINT
DRAWING  CODE/VAR * 		Temp RoHS/Lead-Free?
Materials Analysis
MAX7219C/D    
Active DICE SALES;NA pin;DICE;

Land Pattern: Not Applicable
Use pkgcode/variation: DICE*
See data sheet
MAX7219CNG    
Active PDIP(N);24 pin;158.4 mm²
Outline Drawing:21-0043 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: N24-1*
0°C to +70°C RoHS/Lead-Free: No
Materials Analysis
MAX7219CNG+  
Active PDIP(N);24 pin;158.4 mm²
Outline Drawing:21-0043 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: N24+1*
0°C to +70°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX7219CWG    
Active SOIC(W);24 pin;166.1 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0182 (PDF)
Use pkgcode/variation: W24-1*
0°C to +70°C RoHS/Lead-Free: No
Materials Analysis
MAX7219CWG+  
Active SOIC(W);24 pin;166.1 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0182 (PDF)
Use pkgcode/variation: W24+1*
0°C to +70°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX7219CWG+T    
Active SOIC(W);24 pin;166.1 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0182 (PDF)
Use pkgcode/variation: W24+1*
0°C to +70°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX7219CWG-T    
Active SOIC(W);24 pin;166.1 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0182 (PDF)
Use pkgcode/variation: W24-1*
0°C to +70°C RoHS/Lead-Free: No
Materials Analysis
MAX7219ENG    
Active PDIP(N);24 pin;158.4 mm²
Outline Drawing:21-0043 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: N24-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
MAX7219ENG+    
Active PDIP(N);24 pin;158.4 mm²
Outline Drawing:21-0043 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: N24+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX7219ERG    
Active CDIP(N);24 pin;256 mm²
Outline Drawing:21-0045 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: R24-4*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
Part Number Free
Sample		 Buy Status Explanations for product status codes Package:
TYPE PINS FOOTPRINT
DRAWING  CODE/VAR * 		Temp RoHS/Lead-Free?
Materials Analysis
MAX7219ERG+    
Active CDIP;

Land Pattern: Not Available

-40°C to +85°C See data sheet
MAX7219EWG    
Active SOIC(W);24 pin;166.1 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0182 (PDF)
Use pkgcode/variation: W24-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
MAX7219EWG+    
Active SOIC(W);24 pin;166.1 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0182 (PDF)
Use pkgcode/variation: W24+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX7219EWG+T    
Active SOIC(W);24 pin;166.1 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0182 (PDF)
Use pkgcode/variation: W24+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX7219EWG-T    
Active W.SO;24 pin

Land Pattern: Not Available

-40°C to +85°C See data sheet
MAX7221CNG    
Active PDIP(N);24 pin;158.4 mm²
Outline Drawing:21-0043 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: N24-1*
0°C to +70°C RoHS/Lead-Free: No
Materials Analysis
MAX7221CNG+  
Active PDIP(N);24 pin;158.4 mm²
Outline Drawing:21-0043 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: N24+1*
0°C to +70°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX7221CWG    
Active SOIC(W);24 pin;166.1 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0182 (PDF)
Use pkgcode/variation: W24-1*
0°C to +70°C RoHS/Lead-Free: No
Materials Analysis
MAX7221CWG+  
Active SOIC(W);24 pin;166.1 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0182 (PDF)
Use pkgcode/variation: W24+1*
0°C to +70°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX7221CWG+T    
Active SOIC(W);24 pin;166.1 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0182 (PDF)
Use pkgcode/variation: W24+1*
0°C to +70°C RoHS/Lead-Free: Lead Free
Materials Analysis
Part Number Free
Sample		 Buy Status Explanations for product status codes Package:
TYPE PINS FOOTPRINT
DRAWING  CODE/VAR * 		Temp RoHS/Lead-Free?
Materials Analysis
MAX7221CWG-T    
Active W.SO;24 pin

Land Pattern: Not Available

0°C to +70°C See data sheet
MAX7221ENG    
Active PDIP(N);24 pin;158.4 mm²
Outline Drawing:21-0043 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: N24-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
MAX7221ENG+    
Active PDIP(N);24 pin;158.4 mm²
Outline Drawing:21-0043 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: N24+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX7221ERG    
Active CDIP(N);24 pin;256 mm²
Outline Drawing:21-0045 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: R24-4*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
MAX7221EWG    
Active SOIC(W);24 pin;166.1 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0182 (PDF)
Use pkgcode/variation: W24-1*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
MAX7221EWG+    
Active SOIC(W);24 pin;166.1 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0182 (PDF)
Use pkgcode/variation: W24+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX7221EWG+T    
Active SOIC(W);24 pin;166.1 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0182 (PDF)
Use pkgcode/variation: W24+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX7221EWG-T    
Active W.SO;24 pin

Land Pattern: Not Available

-40°C to +85°C See data sheet

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; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product 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.

Notes and Comments

True 3-wire serial interface, easy to use (MAX7219)
Slew-rate limited segment drivers for lower EMI, SPI, QSPI, MICROWIRE serial interface (MAX7221)

Similar Products by Function

MAX6950, MAX6951 Serially Interfaced, +2.7V to +5.5V, 5- and 8-Digit LED Display Drivers
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
MAX6955 2-Wire Interfaced, 2.7V to 5.5V LED Display Driver with I/O Expander and Key Scan
MAX6958, MAX6959 2-Wire Interfaced, 3V to 5.5V, 4-Digit, 9-Segment LED Display Drivers with Keyscan
See All Display Drivers (52 Products)

Similar Products by Application

Broadcast TV and Radio > Display Drivers
Clothes Dryers > Display
Washing Machine > Display


Didn't Find What You Need?

Next Day Product Selection Assistance from Applications Engineers
Parametric Search
Applications Help

Information Index

Overview

  

Technical Documents

  

Ordering Info

  

Related Products

  
Description
Key Features
Applications/Uses
Key Specifications
Diagram
Notes and Comments
  Data Sheet
Application Notes
Evaluation Kits
Product Guides
Reliability Reports
Software/Models
  Price and Availability
Samples
Buy Online
Package Information
Lead-Free Information
  Similar Products by Function
Similar Products by Application
Evaluation Kits
Products with Similar Part Numbers
Products Used With This
 
Document Ref.: 19-4452 Rev 4; 2003-08-29
This page last modified: 2010-08-17

 


Contact Us     |     Privacy Policy     |     Legal Notices
Copyright © 2012 by Maxim Integrated Products