The MAX7219CNG+ from Maxim Integrated is a compact, serial input/output common-cathode display driver that can interface microprocessors to a 7-segment numeric LED display of up to 8 digits, bar-graph displays, or 64 individual LEDs. It is included in a 24-pin DIP package, making it suitable for breadboard prototyping and permanent projects alike.

Key Features

• Integrated Multiplexing: The device integrates BCD code-B decoders, multiplex scan circuitry, segment and digit drivers, and an 8x8 static RAM to store each digit.
• Individual LED Control: Users can address each LED individually, giving them the freedom to create custom displays or lighting effects.
• Simplified Wiring: Only one external resistor is needed to set the segment current for all LEDs, which simplifies the hardware design and reduces component count.
• Digital Interface: The MAX7219CNG+ uses a simple serial interface to communicate with microcontrollers, which can minimize the number of pins required for display control.
• Daisy Chain Capability: Multiple MAX7219CNG+ devices can be connected in series to control extended displays with a minimal number of interface pins.
• Low Power Consumption: The device includes a power-saving shutdown mode, which reduces power consumption to less than 10µA.

Applications

The MAX7219CNG+ is versatile and can be used in a variety of applications, including:

• Point of Sale (POS) Displays
• Bar Graph Displays
• Industrial Controllers
• Panel Meters
• Digital Clocks

Technical Specifications

Whether you're developing a prototype or a final product, the MAX7219CNG+ offers a reliable and efficient solution for driving LED displays with ease.