MAX7219EWG+T

The MAX7219EWG+T is a compact, serial input/output common-cathode display driver designed to interface microprocessors with 7-segment numeric LED displays of up to 8 digits, bar-graph displays, or 64 individual LEDs. It includes on-chip BCD code-B decoding, multiplex scan circuitry, segment and digit drivers, and an 8x8 static RAM.

Key features include a 10MHz serial interface, individual LED segment control, and decode/no-decode digit selection. The device offers a low-power shutdown mode of 150μA with data retention, along with digital and analog brightness control. It is designed to drive common-cathode LED displays and features slew-rate limited segment drivers for reduced EMI, making it suitable for applications requiring clear and controlled LED output.

This component operates within a supply voltage range of 4V to 5.5V and has an operating temperature range of -40°C to 85°C. It is supplied in a 24-SOIC surface mount package, with tape and reel packaging available. The interface is a 4-wire serial connection, and it supports 8 digits with 7-segment plus DP configuration.

Applications for the MAX7219EWG+T include bar-graph displays, industrial controllers, panel meters, and LED matrix displays. Its ability to control individual segments and digits without rewriting the entire display makes it versatile for various display needs.