The MAX6955AAX+T is a compact, serially interfaced LED display driver from Maxim Integrated that offers an ideal solution for controlling up to 16 individual 7-segment, 14-segment, or 16-segment alphanumeric LED digits. This powerful driver is housed in a small, 36-pin SSOP package, making it suitable for space-constrained applications where a large amount of data needs to be displayed with clarity and precision.

Key Features

• Multi-Digit Capability: The MAX6955AAX+T can drive up to 8 7-segment digits or 4 16-segment alphanumeric digits directly, and can be multiplexed for up to 16 7-segment digits.
• Integrated Multiplexing: With built-in multiplexing support, the chip simplifies design and reduces external component count.
• Flexible Interface: It features a 2-wire, I²C-compatible serial interface, making it easy to connect to a wide range of microcontrollers and processors.
• Individual LED Control: Each LED segment can be individually controlled, allowing for dynamic and diverse display options.
• Brightness Control: The device includes 16-step digital brightness control to adjust the display to various lighting conditions.
• Key Scan Function: A built-in key scan function can scan up to 32 switches, reducing the need for additional switch scanning circuitry.

Applications

The MAX6955AAX+T is versatile and can be used in a variety of applications, including:

• Industrial displays
• Instrumentation panels
• Vending machine interfaces
• Telecommunications equipment
• Consumer electronics

Technical Specifications

Operating with a supply voltage range of 2.7V to 5.5V, the MAX6955AAX+T is designed for both 3.3V and 5V systems. It operates over the extended -40°C to +125°C temperature range, ensuring reliability in harsh environments. The device also features an integrated watchdog timer for improved system reliability.

Conclusion

The MAX6955AAX+T from Maxim Integrated is a comprehensive solution for driving multiple LED displays with ease and precision. Its rich set of features, combined with the small form factor, makes it a valuable component for any application where clear and dynamic display control is needed.