MAX6950CEE+ [Analog Devices]

The MAX6950/MAX6951 are serially interfaced LED display drivers designed to drive common-cathode 7-segment numeric LED digits, bar graphs, or discrete LEDs. The MAX6950 drives up to five digits (40 LEDs), while the MAX6951 drives up to eight digits (64 LEDs). They operate from +2.7V to +5.5V and feature a high-speed SPI-compatible serial interface. Key features include individual LED segment control, hexadecimal decoding or no-decode selection, digital brightness control, segment blinking with synchronization across multiple drivers, and a low-power shutdown mode that retains data. The drivers include on-chip hexadecimal character decoders, multiplex scan circuitry, segment and digit drivers, and static RAM for digit storage. They are available in a small 16-pin QSOP package with an exposed pad.