MAX7221CWG+T

Display Drivers Overview

The MAX7221CWG+T is a serially interfaced, common-cathode LED display driver manufactured by Analog Devices Inc./Maxim Integrated. It interfaces microprocessors to up to 8-digit 7-segment numeric displays, bar-graph displays, or 64 individual LEDs. The device integrates a BCD code-B decoder, multiplex scan circuitry, segment and digit drivers, and an 8x8 static RAM for digit storage. It operates within a supply voltage range of 4 V to 5.5 V with a maximum power dissipation of 941 mW. The component supports SPI, QSPI, and MICROWIRE protocols and is housed in a 24-pin SOIC package.

Display Drivers Feature Summary

• Serial interface compatibility with standard microprocessor communication protocols
• Integrated on-chip memory for storing digit data without external components
• Built-in decoding logic eliminating the need for external decoder circuits
• Single external resistor configuration for setting segment current across all LEDs

Display Drivers Applications

• Driving 7-segment numeric LED displays
• Controlling bar-graph LED displays
• Managing arrays of individual LEDs

Display Drivers Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status through official manufacturer documentation as regulatory requirements vary by region. Ensure the SOIC-24 package dimensions match your PCB footprint design constraints before finalizing procurement decisions.

Display Drivers Selection Notes

Select this component when a compact solution for driving multiple digits is required without external decoding hardware. It is suitable for designs needing direct serial connection to microcontrollers. Consider the thermal performance limits if operating near the maximum temperature rating. Verify that the host processor supports the required serial protocol standards for reliable data transmission.

Display Drivers Part Context

This part belongs to the MAX7221 series of LED display drivers from Maxim Integrated. It shares functional similarities with the MAX7219 but includes additional features such as a shutdown mode and high-frequency clock capability. The series is designed to simplify the interface between digital logic and visual output devices in embedded systems.

Display Drivers Replacement Considerations

The MAX7219CWG+T is a documented substitute within the same family. Verify pinout compatibility and feature parity regarding serial interface support before substitution.