MAX7221CNG+ - Analog Devices Inc./Maxim Integrated

Manufacturer Part Number

MAX7221CNG+

Manufacturer

Analog Devices

Introduction

The MAX7221CNG+ is a power management display driver specialized for LED displays.

Product Features and Performance

Serailly interfaced, 8-digit LED display driver

SPI, QSPI, MICROWIRE Serial Interface

Individual LED segment control

Drive common-cathode LED display

Digital brightness control

Built-in multiplex scan circuitry

No external resistors needed for setting current

Noise-free display with a single external capacitor

Load dump and power-down mode available

Product Advantages

Reduces complexity due to serial interface

Minimizes the number of digital GPIOs required from the controlling microcontroller

Improves visual performance with digital control over brightness

Enhances reliability with built-in scan-limit and decode functionality

Ensures consistent operation with integrated slew-rate-limited segment and grid drivers

Key Technical Parameters

Supply Voltage: 4V ~ 5.5V

Supply Current: 330 mA

Display Type Supported: LED

Configuration: 7 Segment + Decimal Point

Interface: 4-Wire Serial

Digits or Characters Supported: 8 Digits

Operating Temperature Range: 0°C ~ 70°C

Mounting Type: Through Hole

Package/Case: 24-DIP

Quality and Safety Features

Integrated thermal shutdown

Under-voltage lockout for safe operation

Compatibility

Compatible with SPI, QSPI, MICROWIRE serial interfaces

Drives common-cathode LED displays up to 8 digits

Application Areas

Digital clocks

Instrument panels

Industrial controllers

Consumer electronics with numeric displays

Product Lifecycle

Status: Active

The MAX7221CNG+ is not nearing discontinuation, and upgrades or replacements are readily available.

Several Key Reasons to Choose This Product

Extensive temperature operation range suitable for various environments

High integration reduces external component count and system complexity

Easy-to-use serial interface simplifies connection to microcontrollers

Supports a wide range of LED displays facilitating design-in for multiple applications

Uniformity in display brightness through precise digital control