LED DRVR 140Segment 3.3V/5V 40-Pin PDIP

The MAX6953 is a compact cathode-row display driver that interfaces microprocessors to 5 x 7 dot-matrix LED displays through an I²C-compatible serial interface. The MAX6953 drives up to four digits (140 LEDs). Included on-chip are an ASCII 104-character font, multiplex scan circuitry, column and row drivers, and static RAM that stores each digit, as well as font data for 24 user-definable characters. The segment current for the LEDs is set by an internal digit-by-digit digital brightness control. The device includes a low-power shutdown mode, segment blinking (synchronized across multiple drivers, if desired), and a test mode that forces all LEDs on. The LED drivers are slew-rate limited to reduce EMI. For an SPI-compatible version, refer to the MAX6952 data sheet. An EV kit is available for the MAX6952.

• 400kbps 2-Wire Interface Compatible with I²C
• 2.7V to 5.5V Operation
• Drives 4 Monocolor or 2 Bicolor Cathode-Row
• 5 x 7 Matrix Displays
• Built-In ASCII 104-Character Font
• 24 User-Definable Characters Available
• Automatic Blinking Control for Each Segment
• 70µA Low-Power Shutdown (Data Retained)
• 16-Step Digital Brightness Control
• Display Blanked on Power-Up
• Slew-Rate-Limited Segment Drivers for Lower EMI
• 36-Pin SSOP and 40-Pin DIP Packages
• Extended Temperature Range as Standard