The MAX6955AAX is a versatile, compact integrated circuit designed by Maxim Integrated, tailored for driving both common-cathode and common-anode 7-segment LED displays. This powerful chip is housed in a 36-SSOP (Shrink Small Outline Package) and is engineered to control up to 16 individual 7-segment LED digits, or 8 digits if configured for 14-segment alphanumeric mode.

Key Features

• Multi-Configuration Support: The MAX6955AAX can drive common-cathode or common-anode displays, offering flexibility for various design requirements.
• Display Capability: Capable of driving up to 16 digits in 7-segment mode or 8 digits in 14-segment alphanumeric mode, making it suitable for a range of applications from simple numeric displays to more complex alphanumeric messaging.
• I²C-Compatible Interface: Features a serial interface compatible with the I²C protocol, providing easy integration with microcontrollers and other digital systems.
• Integrated Multiplexing: The on-chip multiplexing simplifies design and reduces external component count, saving space and cost.
• Dimming and Blinking Control: Offers individual LED intensity control and blinking functionality, allowing for dynamic display effects and power-saving modes.
• Key Scan: Integrated key scan circuitry supports reading from a matrix of up to 64 switches, eliminating the need for additional switch scanning hardware.

Applications

The MAX6955AAX is ideal for a variety of applications that require alphanumeric or numeric LED displays. These include:

• Industrial control panels
• Instrumentation displays
• Set-top boxes and AV equipment
• Home appliances
• Point of sale terminals

Technical Specifications

The device operates over a wide voltage range from 2.7V to 5.5V and is specified for operation from -40°C to +125°C, making it suitable for industrial environments. Its integrated features and capabilities make the MAX6955AAX a robust solution for sophisticated LED display applications.