MAX7219 LED Display Drivers: Datasheet, Pinout and Schematic

UTMEL

Published: 06 September 2021 | Last Updated: 06 September 2021

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MAX7219EWG

MAX7219EWG

Maxim Integrated

Active DUAL 5V V Display Drivers ICs Tube 8

Purchase Guide

Active DUAL 5V V Display Drivers ICs Tube 8

MAX7219 is an interfaced, 8-digit led display driver. This article enforces datasheet, pinout, schematic, application, and other details about MAX7219.

Recently I've been playing around with an LED Matrix and controlling it with a MAX7219 LED driver. This video is a bit of a rant with some tips and tricks about getting started with the MAX7219 since I struggled a bit in getting the circuit hooked up properly when I was getting started.

DIY FYI: Using a MAX7219 with an LED Matrix

MAX7219 Pinout


max7219 PINOUT.png

MAX7219 Pinout

Pin   NumberDescription
COMMON CATHODE OF   DISPLAY SEGMENTS
2DIG0- Common ground   for all eight segments of DIGIT0
11DIG1- Common ground   for all eight segments of DIGIT1
6DIG2- Common ground   for all eight segments of DIGIT2
7DIG3- Common ground   for all eight segments of DIGIT3
3DIG4- Common ground   for all eight segments of DIGIT4
10DIG5- Common ground   for all eight segments of DIGIT5
5DIG6- Common ground   for all eight segments of DIGIT6
8DIG7- Common ground   for all eight segments of DIGIT7
SHARED TERMINALS
4GND
19V+- Power Supply
SHARED SEGMENT   TERMINAL OF ALL EIGHT DIGITS
14SEG A – SEGMENT   A  of all DIGITS
16SEG B – SEGMENT   B  of all DIGITS
20SEG C – SEGMENT   C  of all DIGITS
23SEG D – SEGMENT   D  of all DIGITS
21SEG E – SEGMENT   E  of all DIGITS
15SEG F – SEGMENT   F  of all DIGITS
17SEG G – SEGMENT   G  of all DIGITS
22SEG DP – SEGMENT   DOT of all DIGITS
FUNCTION PINS
1DIN -  Serial   Data Input Pin
12LOAD(CS) – Chip   Select or Data shift pin
13CLK -  Clock Pin
24DOUT -  Pin used   to Connect Second chip serially
18ISET -  current   output adjust pin


MAX7219 CAD Model

Symbol

max7219 symbol.png

Symbol

Footprint

max7219 footprint.png

Footprint



Overview of MAX7219

The MAX7219 is a kind of compact, serial input/output common-cathode display driver that interfaces microprocessors (µPs) to 7-segment numeric LED displays of up to 8 digits, bar-graph displays, or 64 individual LEDs.


MAX7219 Block Diagram

max7219 block diagram.png

MAX7219 Block Diagram

Specifications

Maxim Integrated MAX7219EWG technical specifications, attributes, parameters and parts with similar specifications to Maxim Integrated MAX7219EWG .
  • Type
    Parameter
  • Factory Lead Time
    6 Weeks
  • Contact Plating

    Contact plating (finish) provides corrosion protection for base metals and optimizes the mechanical and electrical properties of the contact interfaces.

    Tin
  • Mount

    In electronic components, the term "Mount" typically refers to the method or process of physically attaching or fixing a component onto a circuit board or other electronic device. This can involve soldering, adhesive bonding, or other techniques to secure the component in place. The mounting process is crucial for ensuring proper electrical connections and mechanical stability within the electronic system. Different components may have specific mounting requirements based on their size, shape, and function, and manufacturers provide guidelines for proper mounting procedures to ensure optimal performance and reliability of the electronic device.

    Surface Mount
  • Mounting Type

    The "Mounting Type" in electronic components refers to the method used to attach or connect a component to a circuit board or other substrate, such as through-hole, surface-mount, or panel mount.

    Surface Mount
  • Package / Case

    refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.

    24-SOIC (0.295, 7.50mm Width)
  • Number of Pins
    24
  • SwitchingFrequency
    10MHz
  • Operating Temperature

    The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.

    -40°C~85°C
  • Packaging

    Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.

    Tube
  • Published
    1997
  • JESD-609 Code

    The "JESD-609 Code" in electronic components refers to a standardized marking code that indicates the lead-free solder composition and finish of electronic components for compliance with environmental regulations.

    e3
  • Pbfree Code

    The "Pbfree Code" parameter in electronic components refers to the code or marking used to indicate that the component is lead-free. Lead (Pb) is a toxic substance that has been widely used in electronic components for many years, but due to environmental concerns, there has been a shift towards lead-free alternatives. The Pbfree Code helps manufacturers and users easily identify components that do not contain lead, ensuring compliance with regulations and promoting environmentally friendly practices. It is important to pay attention to the Pbfree Code when selecting electronic components to ensure they meet the necessary requirements for lead-free applications.

    yes
  • Part Status

    Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.

    Active
  • Moisture Sensitivity Level (MSL)

    Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures

    1 (Unlimited)
  • Number of Terminations
    24
  • ECCN Code

    An ECCN (Export Control Classification Number) is an alphanumeric code used by the U.S. Bureau of Industry and Security to identify and categorize electronic components and other dual-use items that may require an export license based on their technical characteristics and potential for military use.

    EAR99
  • Additional Feature

    Any Feature, including a modified Existing Feature, that is not an Existing Feature.

    COMMON-CATHODE
  • Max Power Dissipation

    The maximum power that the MOSFET can dissipate continuously under the specified thermal conditions.

    941mW
  • Voltage - Supply

    Voltage - Supply refers to the range of voltage levels that an electronic component or circuit is designed to operate with. It indicates the minimum and maximum supply voltage that can be applied for the device to function properly. Providing supply voltages outside this range can lead to malfunction, damage, or reduced performance. This parameter is critical for ensuring compatibility between different components in a circuit.

    4V~5.5V
  • Terminal Position

    In electronic components, the term "Terminal Position" refers to the physical location of the connection points on the component where external electrical connections can be made. These connection points, known as terminals, are typically used to attach wires, leads, or other components to the main body of the electronic component. The terminal position is important for ensuring proper connectivity and functionality of the component within a circuit. It is often specified in technical datasheets or component specifications to help designers and engineers understand how to properly integrate the component into their circuit designs.

    DUAL
  • Terminal Form

    Occurring at or forming the end of a series, succession, or the like; closing; concluding.

    GULL WING
  • Peak Reflow Temperature (Cel)

    Peak Reflow Temperature (Cel) is a parameter that specifies the maximum temperature at which an electronic component can be exposed during the reflow soldering process. Reflow soldering is a common method used to attach electronic components to a circuit board. The Peak Reflow Temperature is crucial because it ensures that the component is not damaged or degraded during the soldering process. Exceeding the specified Peak Reflow Temperature can lead to issues such as component failure, reduced performance, or even permanent damage to the component. It is important for manufacturers and assemblers to adhere to the recommended Peak Reflow Temperature to ensure the reliability and functionality of the electronic components.

    260
  • Number of Functions
    1
  • Supply Voltage

    Supply voltage refers to the electrical potential difference provided to an electronic component or circuit. It is crucial for the proper operation of devices, as it powers their functions and determines performance characteristics. The supply voltage must be within specified limits to ensure reliability and prevent damage to components. Different electronic devices have specific supply voltage requirements, which can vary widely depending on their design and intended application.

    5V
  • Terminal Pitch

    The center distance from one pole to the next.

    1.27mm
  • Base Part Number

    The "Base Part Number" (BPN) in electronic components serves a similar purpose to the "Base Product Number." It refers to the primary identifier for a component that captures the essential characteristics shared by a group of similar components. The BPN provides a fundamental way to reference a family or series of components without specifying all the variations and specific details.

    MAX7219
  • Pin Count

    a count of all of the component leads (or pins)

    24
  • Number of Outputs
    16
  • Operating Supply Voltage

    The voltage level by which an electrical system is designated and to which certain operating characteristics of the system are related.

    5.5V
  • Power Supplies

    an electronic circuit that converts the voltage of an alternating current (AC) into a direct current (DC) voltage.?

    5V
  • Configuration

    The parameter "Configuration" in electronic components refers to the specific arrangement or setup of the components within a circuit or system. It encompasses how individual elements are interconnected and their physical layout. Configuration can affect the functionality, performance, and efficiency of the electronic system, and may influence factors such as signal flow, impedance, and power distribution. Understanding the configuration is essential for design, troubleshooting, and optimizing electronic devices.

    7 Segment + DP
  • Interface

    In electronic components, the term "Interface" refers to the point at which two different systems, devices, or components connect and interact with each other. It can involve physical connections such as ports, connectors, or cables, as well as communication protocols and standards that facilitate the exchange of data or signals between the connected entities. The interface serves as a bridge that enables seamless communication and interoperability between different parts of a system or between different systems altogether. Designing a reliable and efficient interface is crucial in ensuring proper functionality and performance of electronic components and systems.

    4-Wire Serial
  • Operating Supply Current

    Operating Supply Current, also known as supply current or quiescent current, is a crucial parameter in electronic components that indicates the amount of current required for the device to operate under normal conditions. It represents the current drawn by the component from the power supply while it is functioning. This parameter is important for determining the power consumption of the component and is typically specified in datasheets to help designers calculate the overall power requirements of their circuits. Understanding the operating supply current is essential for ensuring proper functionality and efficiency of electronic systems.

    330mA
  • Power Dissipation

    the process by which an electronic or electrical device produces heat (energy loss or waste) as an undesirable derivative of its primary action.

    941mW
  • Output Current

    The rated output current is the maximum load current that a power supply can provide at a specified ambient temperature. A power supply can never provide more current that it's rated output current unless there is a fault, such as short circuit at the load.

    320mA
  • Max Supply Current

    Max Supply Current refers to the maximum amount of electrical current that a component can draw from its power supply under normal operating conditions. It is a critical parameter that ensures the component operates reliably without exceeding its thermal limits or damaging internal circuitry. Exceeding this current can lead to overheating, performance degradation, or failure of the component. Understanding this parameter is essential for designing circuits that provide adequate power while avoiding overload situations.

    330mA
  • Min Input Voltage

    The parameter "Min Input Voltage" in electronic components refers to the minimum voltage level that must be applied to the component for it to operate within its specified parameters. This value is crucial as providing a voltage below this minimum threshold may result in the component malfunctioning or not functioning at all. It is important to adhere to the specified minimum input voltage to ensure the proper operation and longevity of the electronic component. Failure to meet this requirement may lead to potential damage to the component or the overall system in which it is used.

    4V
  • Max Input Voltage

    Max Input Voltage refers to the maximum voltage level that an electronic component can safely handle without getting damaged. This parameter is crucial for ensuring the proper functioning and longevity of the component. Exceeding the specified maximum input voltage can lead to overheating, electrical breakdown, or permanent damage to the component. It is important to carefully adhere to the manufacturer's guidelines regarding the maximum input voltage to prevent any potential issues and maintain the reliability of the electronic device.

    5.5V
  • Output Characteristics

    Output characteristics in electronic components refer to the relationship between the output voltage and output current across a range of input conditions. This parameter is essential for understanding how a device, such as a transistor or operational amplifier, behaves under various loads and operating points. It provides insights into the efficiency, performance, and limitations of the component, helping designers to make informed choices for circuits and applications.

    TOTEM-POLE
  • Output Polarity

    Output polarity in electronic components refers to the orientation of the output signal in relation to the ground or reference voltage. It indicates whether the output voltage is positive or negative with respect to the ground. Positive output polarity means the signal is higher than the ground potential, while negative output polarity signifies that the signal is lower than the ground. This characteristic is crucial for determining compatibility with other components in a circuit and ensuring proper signal processing.

    TRUE
  • Input Characteristics

    In electronic components, "Input Characteristics" refer to the set of specifications that describe how the component behaves in response to signals or inputs applied to it. These characteristics typically include parameters such as input voltage, input current, input impedance, input capacitance, and input frequency range. Understanding the input characteristics of a component is crucial for designing circuits and systems, as it helps ensure compatibility and proper functioning. By analyzing these parameters, engineers can determine how the component will interact with the signals it receives and make informed decisions about its use in a particular application.

    STANDARD
  • Display Type

    Display Type in electronic components refers to the technology used to display information or visuals on a screen or panel. It describes the specific method or technology employed to present data, such as LCD (Liquid Crystal Display), OLED (Organic Light-Emitting Diode), LED (Light-Emitting Diode), or CRT (Cathode Ray Tube). Each display type has its own characteristics, including factors like resolution, color accuracy, viewing angles, power consumption, and response time. Choosing the right display type is crucial for determining the quality and performance of the visual output in electronic devices, such as smartphones, TVs, monitors, and digital signage.

    LED
  • High Level Output Current

    High-level Output Current IOH The current flowing into the output at a specified high- level voltage. Low-level Output Current IOL The current flowing into the output at a specified low- level output voltage.

    -2mA
  • Low Level Output Current

    The current into the output terminal with input conditions applied that, according to the product specification, will establish a low level at the output.

    5mA
  • fmax-Min

    fmax-Min refers to the frequency range that an electronic component or system can operate within. It represents the difference between the maximum frequency (fmax) and the minimum frequency (Min) limits of operation. This parameter is crucial in defining the bandwidth of the component, indicating how effectively it can transmit or receive signals over that range. A wider fmax-Min value typically signifies better performance for applications that require broad frequency response.

    1.3 MHz
  • Number of Segments
    8
  • Multiplexed Display Capability

    Multiplexed Display Capability refers to the ability of an electronic component or system to control multiple display elements using fewer input/output lines. This is achieved by rapidly switching between different displays or segments, allowing for efficient communication and reduced wiring complexity. In multiplexed systems, each display is activated sequentially, creating the illusion of simultaneous display to the user. This capability is commonly utilized in devices like LED matrices and LCD screens to enhance functionality while conserving space and resources.

    YES
  • Digits or Characters

    The parameter "Digits or Characters" in electronic components refers to the type of display or output that the component provides. This parameter indicates whether the component displays numerical digits, such as numbers, or alphanumeric characters, which include both letters and numbers. Components with a "Digits" display typically show numerical values only, making them suitable for applications where numerical data is the primary output. On the other hand, components with a "Characters" display can show both numbers and letters, offering more flexibility in displaying information or messages.When selecting electronic components, understanding whether they provide a "Digits" or "Characters" display can help ensure compatibility with the intended application and the type of information that needs to be displayed.

    8 Digits
  • Height
    2.35mm
  • Length
    15.6mm
  • Width
    7.6mm
  • REACH SVHC

    The parameter "REACH SVHC" in electronic components refers to the compliance with the Registration, Evaluation, Authorization, and Restriction of Chemicals (REACH) regulation regarding Substances of Very High Concern (SVHC). SVHCs are substances that may have serious effects on human health or the environment, and their use is regulated under REACH to ensure their safe handling and minimize their impact.Manufacturers of electronic components need to declare if their products contain any SVHCs above a certain threshold concentration and provide information on the safe use of these substances. This information allows customers to make informed decisions about the potential risks associated with using the components and take appropriate measures to mitigate any hazards.Ensuring compliance with REACH SVHC requirements is essential for electronics manufacturers to meet regulatory standards, protect human health and the environment, and maintain transparency in their supply chain. It also demonstrates a commitment to sustainability and responsible manufacturing practices in the electronics industry.

    No SVHC
  • Radiation Hardening

    Radiation hardening is the process of making electronic components and circuits resistant to damage or malfunction caused by high levels of ionizing radiation, especially for environments in outer space (especially beyond the low Earth orbit), around nuclear reactors and particle accelerators, or during nuclear accidents or nuclear warfare.

    No
  • RoHS Status

    RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.

    ROHS3 Compliant
  • Lead Free

    Lead Free is a term used to describe electronic components that do not contain lead as part of their composition. Lead is a toxic material that can have harmful effects on human health and the environment, so the electronics industry has been moving towards lead-free components to reduce these risks. Lead-free components are typically made using alternative materials such as silver, copper, and tin. Manufacturers must comply with regulations such as the Restriction of Hazardous Substances (RoHS) directive to ensure that their products are lead-free and environmentally friendly.

    Lead Free
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MAX7219 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


MAX7219 Applications

♦ General-purpose SHIFT operation

♦ Measuring Instruments

♦ Digital Electronics

♦ Servers

♦ Memory units

♦ Networking

♦ Digital systems


MAX7219 Applications Circuit

max7219 application circuit.png

MAX7219 Applications Circuit

MAX7219 Similar Ics

74HC595


Parts with Similar Specs

The three parts on the right have similar specifications to Maxim Integrated & MAX7219EWG .

Where to use MAX7219 IC

♦ This IC is basically used where you want to convert serial data to parallel data.

♦ The chip is used to reduce the I/O pin usage of the controller or processor.

♦ Used to control 64 LEDs using only 3 PINS

♦ Preferred when controller 7 Segment Displays. The chip can control up to 8 DIGIT.

♦ Can be used to control more display segments by connecting more chips in serial.


MAX7219 Package

max7219 PACKAGE.png

MAX7219 Package

MAX7219 Manufacturer

Maxim Integrated develops innovative analog and mixed-signal products and technologies to make systems smaller and smarter, with enhanced security and increased energy efficiency. We are empowering design innovation for our automotive, industrial, healthcare, mobile consumer, and cloud data center customers to deliver industry-leading solutions that help change the world.


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Frequently Asked Questions

What is MAX7219 used for?

The MAX7219 is an IC designed to control an 8x8 LED MATRIX. The IC is serial input common-cathode (Common Negative) display drivers that interface microprocessors (or microcontroller) to 7-segment numeric LED displays of up to 8 digits, bar-graph displays, or 64 individual LEDs.

How does MAX7219 work?

MAX7219CNG is a programmable display driver integrated circuit that is used to control a large array of LEDs while consuming a relatively small number of GPIO pins. It receives input commands via four SPI pins and uses these commands to drive either an 8x8 matrix of LEDs or an eight-digit seven-segment display.

How do I connect my MAX7219?

In your cable select and your clock. So I connected those at 12 11 and 10 on do you know and then I just use a jumper cable to go from the end of one to the end of the other one.

What is MAX7219 dot matrix?

The MAX7219 Dot Led Matrix Module is a serial input common-cathode driver that interfaces micro-controllers to LED matrices. All common micro-controllers can be connected to this module by using a 4-wire serial interface. Each output can be addressed without refreshing the entire display.
MAX7219EWG

Maxim Integrated

In Stock: 3000

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