MAX7219EWG+T

Display Drivers Overview

The MAX7219EWG+T is a serial input/output common-cathode display driver manufactured by Analog Devices Inc./Maxim Integrated. It interfaces microprocessors to up to eight 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 4V to 5.5V and supports a continuous serial interface clock frequency of 10MHz. The component is housed in a 24-pin Wide SO package and functions reliably across an operating temperature range of -40°C to +85°C.

Display Drivers Feature Summary

• Integrates hardware dynamic scanning, BCD decoding, and segment/digit drivers for simplified microprocessor interfacing.
• Features a 10MHz serial interface compatible with standard microprocessor protocols.
• Includes an 8x8 static RAM to store display data without requiring constant rewriting during updates.
• Supports digital and analog brightness control along with a low-power shutdown mode.

Display Drivers Applications

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

Display Drivers Procurement Notes

Verify the specific suffix '+T' indicates tape-and-reel packaging when sourcing. Confirm the manufacturer designation as Analog Devices Inc. or Maxim Integrated, as branding transitions may affect documentation references. Ensure the Wide SO package type matches the target PCB footprint requirements. Validate that the commercial grade temperature rating (-40°C to +85°C) aligns with the intended operational environment before finalizing procurement.

Display Drivers Selection Notes

Select this component when a compact solution is required to drive multiple LED segments via a serial interface. It is suitable for designs needing integrated decoding and multiplexing capabilities to reduce microprocessor load. Consider the 24-pin SO package for surface-mount assembly constraints. Verify compatibility with the system's logic voltage levels and available serial communication pins.

Display Drivers Part Context

This part belongs to the MAX7219 family of LED display drivers, designed to simplify the interface between microcontrollers and LED displays. The 'EWG' designation specifies the industrial temperature range and the Wide SO package style. The '+T' suffix typically denotes reel packaging for automated assembly processes. This series is widely used in applications requiring efficient management of multiple display digits or matrix points.

Display Drivers Replacement Considerations

The MAX7219CWG+T is a pin-compatible alternative within the same family, differing primarily in the commercial temperature range (0°C to +70°C). Ensure the thermal requirements of the application are met when substituting between these variants. Both share identical functional specifications regarding drive current and interface protocols.