MAX7219CWG+

Display Drivers Overview

The MAX7219CWG+ is a compact, serial input/output common-cathode display driver manufactured by Analog Devices Inc./Maxim Integrated. It interfaces microprocessors to up to eight digits of 7-segment numeric LED 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 data storage. It operates within a supply voltage range of 4 V to 5.5 V and supports a maximum supply current of 330 mA. The component is housed in a 24-pin Wide SOIC package and functions reliably across an operating temperature range of 0°C to +70°C.

Display Drivers Feature Summary

• Integrates hardware dynamic scanning circuits, BCD decoders, and segment/digit drivers for simplified system design.
• Features a convenient four-wire serial interface compatible with standard microprocessors.
• Includes an 8x8 static RAM allowing individual data addressing without rewriting all display registers.
• Supports digital and analog brightness control alongside a low-power shutdown mode.

Display Drivers Applications

• Seven-segment numeric LED displays
• Bar-graph displays
• LED matrix displays
• Panel meters

Display Drivers Procurement Notes

Verify the specific suffix '+', which indicates lead-free status and RoHS compliance, against your environmental requirements. Confirm the 'CWG' designation corresponds to the Wide SOIC-24 package suitable for surface-mount assembly. Ensure the commercial temperature grade (0°C to +70°C) aligns with your operational environment. Cross-reference the manufacturer part number with official Analog Devices documentation to confirm current availability and authenticity before procurement.

Display Drivers Selection Notes

Select this component when a serial interface is required to drive multiple 7-segment digits or LED matrices with minimal microprocessor overhead. It is suitable for applications needing integrated decoding and multiplexing capabilities. Consider the MAX7221 if EMI reduction via slew-rate limited drivers or compatibility with SPI/QSPI/Microwire protocols is necessary. Verify that the 4V to 5.5V supply range matches your system power architecture.

Display Drivers Part Context

The MAX7219 series is a widely used family of display drivers designed to simplify the interface between microcontrollers and LED displays. The CWG variant specifically denotes the industrial-grade wide SOIC package version. This component eliminates the need for external decoder and driver chips, reducing board space and component count in embedded display systems.

Display Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.